./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.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/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.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 77d80771821c1cd45088b62d9d16474928a377618be5caefce4c7c3ebfdda084 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 01:10:03,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 01:10:03,138 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 01:10:03,189 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 01:10:03,189 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 01:10:03,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 01:10:03,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 01:10:03,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 01:10:03,200 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 01:10:03,200 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 01:10:03,201 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 01:10:03,203 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 01:10:03,203 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 01:10:03,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 01:10:03,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 01:10:03,211 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 01:10:03,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 01:10:03,213 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 01:10:03,216 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 01:10:03,218 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 01:10:03,222 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 01:10:03,223 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 01:10:03,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 01:10:03,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 01:10:03,232 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 01:10:03,234 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 01:10:03,234 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 01:10:03,235 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 01:10:03,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 01:10:03,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 01:10:03,237 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 01:10:03,238 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 01:10:03,240 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 01:10:03,241 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 01:10:03,242 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 01:10:03,242 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 01:10:03,243 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 01:10:03,243 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 01:10:03,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 01:10:03,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 01:10:03,245 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 01:10:03,246 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-16 01:10:03,268 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 01:10:03,269 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 01:10:03,269 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 01:10:03,269 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 01:10:03,270 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 01:10:03,270 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 01:10:03,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 01:10:03,271 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 01:10:03,271 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 01:10:03,271 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 01:10:03,271 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-16 01:10:03,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 01:10:03,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-16 01:10:03,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 01:10:03,272 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 01:10:03,272 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 01:10:03,272 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 01:10:03,272 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-16 01:10:03,272 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 01:10:03,272 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 01:10:03,273 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 01:10:03,273 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 01:10:03,273 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 01:10:03,273 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 01:10:03,273 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:10:03,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 01:10:03,274 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 01:10:03,274 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 01:10:03,274 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 01:10:03,274 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 01:10:03,274 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 01:10:03,274 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 01:10:03,274 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 01:10:03,275 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 01:10:03,275 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77d80771821c1cd45088b62d9d16474928a377618be5caefce4c7c3ebfdda084 [2021-12-16 01:10:03,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 01:10:03,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 01:10:03,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 01:10:03,491 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 01:10:03,491 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 01:10:03,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c [2021-12-16 01:10:03,555 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10ebdec56/404a45d9e174453baf03c33acecc56cc/FLAGdf3652081 [2021-12-16 01:10:03,948 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 01:10:03,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c [2021-12-16 01:10:03,961 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10ebdec56/404a45d9e174453baf03c33acecc56cc/FLAGdf3652081 [2021-12-16 01:10:03,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/10ebdec56/404a45d9e174453baf03c33acecc56cc [2021-12-16 01:10:03,974 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 01:10:03,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 01:10:03,983 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 01:10:03,983 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 01:10:03,986 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 01:10:03,986 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:10:03" (1/1) ... [2021-12-16 01:10:03,987 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36f1ba75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:03, skipping insertion in model container [2021-12-16 01:10:03,987 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 01:10:03" (1/1) ... [2021-12-16 01:10:03,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 01:10:04,030 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 01:10:04,211 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/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c[11857,11870] [2021-12-16 01:10:04,216 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:10:04,222 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 01:10:04,267 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/seq-mthreaded/pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c[11857,11870] [2021-12-16 01:10:04,268 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 01:10:04,279 INFO L208 MainTranslator]: Completed translation [2021-12-16 01:10:04,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04 WrapperNode [2021-12-16 01:10:04,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 01:10:04,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 01:10:04,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 01:10:04,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 01:10:04,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,326 INFO L137 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 410 [2021-12-16 01:10:04,327 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 01:10:04,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 01:10:04,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 01:10:04,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 01:10:04,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,337 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,337 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,367 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 01:10:04,372 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 01:10:04,372 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 01:10:04,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 01:10:04,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (1/1) ... [2021-12-16 01:10:04,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 01:10:04,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:04,408 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) [2021-12-16 01:10:04,410 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 [2021-12-16 01:10:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 01:10:04,436 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2021-12-16 01:10:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2021-12-16 01:10:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-12-16 01:10:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2021-12-16 01:10:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2021-12-16 01:10:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2021-12-16 01:10:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2021-12-16 01:10:04,437 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2021-12-16 01:10:04,437 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2021-12-16 01:10:04,438 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2021-12-16 01:10:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 01:10:04,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 01:10:04,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 01:10:04,514 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 01:10:04,515 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 01:10:04,855 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 01:10:04,862 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 01:10:04,871 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-16 01:10:04,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:10:04 BoogieIcfgContainer [2021-12-16 01:10:04,873 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 01:10:04,874 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 01:10:04,875 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 01:10:04,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 01:10:04,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 01:10:03" (1/3) ... [2021-12-16 01:10:04,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5a41be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:10:04, skipping insertion in model container [2021-12-16 01:10:04,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 01:10:04" (2/3) ... [2021-12-16 01:10:04,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a5a41be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 01:10:04, skipping insertion in model container [2021-12-16 01:10:04,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 01:10:04" (3/3) ... [2021-12-16 01:10:04,880 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.2.ufo.BOUNDED-10.pals.c [2021-12-16 01:10:04,883 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 01:10:04,884 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 01:10:04,941 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 01:10:04,946 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 [2021-12-16 01:10:04,946 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 01:10:04,962 INFO L276 IsEmpty]: Start isEmpty. Operand has 183 states, 144 states have (on average 1.6041666666666667) internal successors, (231), 148 states have internal predecessors, (231), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-16 01:10:04,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-12-16 01:10:04,967 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:04,968 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:04,968 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:04,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:04,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1040694260, now seen corresponding path program 1 times [2021-12-16 01:10:04,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:04,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428257889] [2021-12-16 01:10:04,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:04,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428257889] [2021-12-16 01:10:05,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428257889] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:05,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794972220] [2021-12-16 01:10:05,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:05,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:05,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:05,193 INFO L87 Difference]: Start difference. First operand has 183 states, 144 states have (on average 1.6041666666666667) internal successors, (231), 148 states have internal predecessors, (231), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:05,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,266 INFO L93 Difference]: Finished difference Result 371 states and 633 transitions. [2021-12-16 01:10:05,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:05,272 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-12-16 01:10:05,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,279 INFO L225 Difference]: With dead ends: 371 [2021-12-16 01:10:05,283 INFO L226 Difference]: Without dead ends: 187 [2021-12-16 01:10:05,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:05,290 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 18 mSDsluCounter, 541 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 820 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2021-12-16 01:10:05,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 185. [2021-12-16 01:10:05,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 146 states have (on average 1.5273972602739727) internal successors, (223), 149 states have internal predecessors, (223), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2021-12-16 01:10:05,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 287 transitions. [2021-12-16 01:10:05,334 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 287 transitions. Word has length 15 [2021-12-16 01:10:05,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,334 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 287 transitions. [2021-12-16 01:10:05,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 287 transitions. [2021-12-16 01:10:05,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-16 01:10:05,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,336 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:05,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 01:10:05,336 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,337 INFO L85 PathProgramCache]: Analyzing trace with hash 899781387, now seen corresponding path program 1 times [2021-12-16 01:10:05,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775799575] [2021-12-16 01:10:05,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775799575] [2021-12-16 01:10:05,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775799575] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:05,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668276788] [2021-12-16 01:10:05,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:05,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:05,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:05,398 INFO L87 Difference]: Start difference. First operand 185 states and 287 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:05,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,442 INFO L93 Difference]: Finished difference Result 383 states and 597 transitions. [2021-12-16 01:10:05,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:05,442 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2021-12-16 01:10:05,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,447 INFO L225 Difference]: With dead ends: 383 [2021-12-16 01:10:05,447 INFO L226 Difference]: Without dead ends: 201 [2021-12-16 01:10:05,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:05,449 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 25 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 829 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-16 01:10:05,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 198. [2021-12-16 01:10:05,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 157 states have (on average 1.5095541401273886) internal successors, (237), 160 states have internal predecessors, (237), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-16 01:10:05,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 303 transitions. [2021-12-16 01:10:05,474 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 303 transitions. Word has length 16 [2021-12-16 01:10:05,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,474 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 303 transitions. [2021-12-16 01:10:05,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-16 01:10:05,474 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 303 transitions. [2021-12-16 01:10:05,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-12-16 01:10:05,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,479 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] [2021-12-16 01:10:05,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-16 01:10:05,479 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,479 INFO L85 PathProgramCache]: Analyzing trace with hash 977089285, now seen corresponding path program 1 times [2021-12-16 01:10:05,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416838158] [2021-12-16 01:10:05,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,518 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416838158] [2021-12-16 01:10:05,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416838158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 01:10:05,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151194574] [2021-12-16 01:10:05,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 01:10:05,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 01:10:05,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:10:05,520 INFO L87 Difference]: Start difference. First operand 198 states and 303 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 01:10:05,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,542 INFO L93 Difference]: Finished difference Result 415 states and 643 transitions. [2021-12-16 01:10:05,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 01:10:05,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2021-12-16 01:10:05,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,544 INFO L225 Difference]: With dead ends: 415 [2021-12-16 01:10:05,544 INFO L226 Difference]: Without dead ends: 227 [2021-12-16 01:10:05,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 01:10:05,546 INFO L933 BasicCegarLoop]: 286 mSDtfsCounter, 22 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,546 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 563 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2021-12-16 01:10:05,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 200. [2021-12-16 01:10:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.5031446540880504) internal successors, (239), 162 states have internal predecessors, (239), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-16 01:10:05,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 305 transitions. [2021-12-16 01:10:05,560 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 305 transitions. Word has length 23 [2021-12-16 01:10:05,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,560 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 305 transitions. [2021-12-16 01:10:05,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-16 01:10:05,560 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 305 transitions. [2021-12-16 01:10:05,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-12-16 01:10:05,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,561 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] [2021-12-16 01:10:05,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-16 01:10:05,562 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,562 INFO L85 PathProgramCache]: Analyzing trace with hash -1386108362, now seen corresponding path program 1 times [2021-12-16 01:10:05,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007280409] [2021-12-16 01:10:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:05,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:05,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007280409] [2021-12-16 01:10:05,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007280409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:05,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014965706] [2021-12-16 01:10:05,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:05,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:05,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:05,636 INFO L87 Difference]: Start difference. First operand 200 states and 305 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,678 INFO L93 Difference]: Finished difference Result 454 states and 708 transitions. [2021-12-16 01:10:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:05,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 31 [2021-12-16 01:10:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,682 INFO L225 Difference]: With dead ends: 454 [2021-12-16 01:10:05,683 INFO L226 Difference]: Without dead ends: 305 [2021-12-16 01:10:05,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:05,685 INFO L933 BasicCegarLoop]: 298 mSDtfsCounter, 130 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 864 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2021-12-16 01:10:05,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 200. [2021-12-16 01:10:05,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.4779874213836477) internal successors, (235), 162 states have internal predecessors, (235), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-16 01:10:05,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 301 transitions. [2021-12-16 01:10:05,704 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 301 transitions. Word has length 31 [2021-12-16 01:10:05,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,704 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 301 transitions. [2021-12-16 01:10:05,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:05,705 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 301 transitions. [2021-12-16 01:10:05,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-16 01:10:05,706 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,706 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 01:10:05,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-16 01:10:05,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1610752054, now seen corresponding path program 1 times [2021-12-16 01:10:05,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850430288] [2021-12-16 01:10:05,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:05,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:05,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,764 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850430288] [2021-12-16 01:10:05,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850430288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:05,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:05,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:05,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739736032] [2021-12-16 01:10:05,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:05,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:05,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:05,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:05,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:05,769 INFO L87 Difference]: Start difference. First operand 200 states and 301 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:05,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:05,798 INFO L93 Difference]: Finished difference Result 390 states and 591 transitions. [2021-12-16 01:10:05,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:05,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2021-12-16 01:10:05,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:05,800 INFO L225 Difference]: With dead ends: 390 [2021-12-16 01:10:05,800 INFO L226 Difference]: Without dead ends: 202 [2021-12-16 01:10:05,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:05,802 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 820 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:05,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1096 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:05,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2021-12-16 01:10:05,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2021-12-16 01:10:05,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 159 states have (on average 1.471698113207547) internal successors, (234), 162 states have internal predecessors, (234), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2021-12-16 01:10:05,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 300 transitions. [2021-12-16 01:10:05,812 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 300 transitions. Word has length 32 [2021-12-16 01:10:05,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:05,813 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 300 transitions. [2021-12-16 01:10:05,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:05,813 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 300 transitions. [2021-12-16 01:10:05,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-12-16 01:10:05,814 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:05,814 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-16 01:10:05,815 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 01:10:05,815 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:05,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:05,815 INFO L85 PathProgramCache]: Analyzing trace with hash 839076892, now seen corresponding path program 1 times [2021-12-16 01:10:05,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:05,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520501969] [2021-12-16 01:10:05,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:05,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:05,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:05,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520501969] [2021-12-16 01:10:05,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520501969] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:05,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115228823] [2021-12-16 01:10:05,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:05,882 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:05,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:05,883 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) [2021-12-16 01:10:05,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 01:10:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:05,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 01:10:05,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:06,060 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:06,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:06,137 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-16 01:10:06,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115228823] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:06,137 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:06,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2021-12-16 01:10:06,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402492626] [2021-12-16 01:10:06,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,138 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:06,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:06,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,139 INFO L87 Difference]: Start difference. First operand 200 states and 300 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 01:10:06,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,177 INFO L93 Difference]: Finished difference Result 448 states and 687 transitions. [2021-12-16 01:10:06,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:06,177 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 35 [2021-12-16 01:10:06,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,180 INFO L225 Difference]: With dead ends: 448 [2021-12-16 01:10:06,180 INFO L226 Difference]: Without dead ends: 259 [2021-12-16 01:10:06,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,187 INFO L933 BasicCegarLoop]: 291 mSDtfsCounter, 66 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 1082 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2021-12-16 01:10:06,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 253. [2021-12-16 01:10:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 202 states have (on average 1.4504950495049505) internal successors, (293), 205 states have internal predecessors, (293), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-16 01:10:06,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 379 transitions. [2021-12-16 01:10:06,212 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 379 transitions. Word has length 35 [2021-12-16 01:10:06,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,212 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 379 transitions. [2021-12-16 01:10:06,212 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 5 states have internal predecessors, (35), 4 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-12-16 01:10:06,212 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 379 transitions. [2021-12-16 01:10:06,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 01:10:06,219 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,219 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:06,241 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:06,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-16 01:10:06,443 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,444 INFO L85 PathProgramCache]: Analyzing trace with hash 346203964, now seen corresponding path program 2 times [2021-12-16 01:10:06,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233155562] [2021-12-16 01:10:06,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:06,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:06,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,519 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2021-12-16 01:10:06,519 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:06,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233155562] [2021-12-16 01:10:06,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233155562] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:06,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:06,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:06,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352603497] [2021-12-16 01:10:06,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:06,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:06,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:06,523 INFO L87 Difference]: Start difference. First operand 253 states and 379 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,572 INFO L93 Difference]: Finished difference Result 486 states and 748 transitions. [2021-12-16 01:10:06,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:06,573 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-16 01:10:06,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,574 INFO L225 Difference]: With dead ends: 486 [2021-12-16 01:10:06,574 INFO L226 Difference]: Without dead ends: 262 [2021-12-16 01:10:06,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,576 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 19 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 807 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-16 01:10:06,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 260. [2021-12-16 01:10:06,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 208 states have (on average 1.4471153846153846) internal successors, (301), 211 states have internal predecessors, (301), 43 states have call successors, (43), 8 states have call predecessors, (43), 8 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-16 01:10:06,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 387 transitions. [2021-12-16 01:10:06,588 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 387 transitions. Word has length 57 [2021-12-16 01:10:06,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,588 INFO L470 AbstractCegarLoop]: Abstraction has 260 states and 387 transitions. [2021-12-16 01:10:06,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:06,589 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 387 transitions. [2021-12-16 01:10:06,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-16 01:10:06,589 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,589 INFO L514 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:06,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 01:10:06,590 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,590 INFO L85 PathProgramCache]: Analyzing trace with hash -562676277, now seen corresponding path program 1 times [2021-12-16 01:10:06,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238799824] [2021-12-16 01:10:06,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,591 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:06,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:06,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,651 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-12-16 01:10:06,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:06,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238799824] [2021-12-16 01:10:06,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238799824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:06,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:06,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:06,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8030738] [2021-12-16 01:10:06,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:06,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:06,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:06,656 INFO L87 Difference]: Start difference. First operand 260 states and 387 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:06,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,692 INFO L93 Difference]: Finished difference Result 530 states and 800 transitions. [2021-12-16 01:10:06,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:06,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2021-12-16 01:10:06,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,696 INFO L225 Difference]: With dead ends: 530 [2021-12-16 01:10:06,696 INFO L226 Difference]: Without dead ends: 299 [2021-12-16 01:10:06,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,707 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 24 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 821 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2021-12-16 01:10:06,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 296. [2021-12-16 01:10:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 240 states have (on average 1.4083333333333334) internal successors, (338), 243 states have internal predecessors, (338), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-16 01:10:06,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 430 transitions. [2021-12-16 01:10:06,725 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 430 transitions. Word has length 57 [2021-12-16 01:10:06,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,725 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 430 transitions. [2021-12-16 01:10:06,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-16 01:10:06,725 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 430 transitions. [2021-12-16 01:10:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-16 01:10:06,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,727 INFO L514 BasicCegarLoop]: trace histogram [5, 4, 4, 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, 1, 1] [2021-12-16 01:10:06,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 01:10:06,727 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,728 INFO L85 PathProgramCache]: Analyzing trace with hash 747834355, now seen corresponding path program 1 times [2021-12-16 01:10:06,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262253402] [2021-12-16 01:10:06,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:06,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:06,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:06,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:06,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-16 01:10:06,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:06,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262253402] [2021-12-16 01:10:06,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262253402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:06,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:06,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:06,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705748240] [2021-12-16 01:10:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:06,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:06,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,832 INFO L87 Difference]: Start difference. First operand 296 states and 430 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:06,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:06,849 INFO L93 Difference]: Finished difference Result 541 states and 799 transitions. [2021-12-16 01:10:06,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:06,850 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 75 [2021-12-16 01:10:06,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:06,853 INFO L225 Difference]: With dead ends: 541 [2021-12-16 01:10:06,854 INFO L226 Difference]: Without dead ends: 298 [2021-12-16 01:10:06,855 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:06,857 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 0 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1095 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:06,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1095 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:06,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-12-16 01:10:06,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 296. [2021-12-16 01:10:06,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 240 states have (on average 1.3958333333333333) internal successors, (335), 243 states have internal predecessors, (335), 46 states have call successors, (46), 9 states have call predecessors, (46), 9 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-16 01:10:06,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 427 transitions. [2021-12-16 01:10:06,868 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 427 transitions. Word has length 75 [2021-12-16 01:10:06,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:06,868 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 427 transitions. [2021-12-16 01:10:06,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:06,869 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 427 transitions. [2021-12-16 01:10:06,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2021-12-16 01:10:06,870 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:06,870 INFO L514 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 4, 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] [2021-12-16 01:10:06,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-16 01:10:06,871 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:06,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:06,871 INFO L85 PathProgramCache]: Analyzing trace with hash -951154883, now seen corresponding path program 1 times [2021-12-16 01:10:06,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:06,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589822693] [2021-12-16 01:10:06,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:06,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:06,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:06,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:06,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:06,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:06,970 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2021-12-16 01:10:06,970 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:06,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589822693] [2021-12-16 01:10:06,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589822693] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:06,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:06,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:06,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874368020] [2021-12-16 01:10:06,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:06,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:06,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:06,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:06,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:06,972 INFO L87 Difference]: Start difference. First operand 296 states and 427 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:07,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,015 INFO L93 Difference]: Finished difference Result 578 states and 855 transitions. [2021-12-16 01:10:07,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:07,016 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 104 [2021-12-16 01:10:07,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,018 INFO L225 Difference]: With dead ends: 578 [2021-12-16 01:10:07,018 INFO L226 Difference]: Without dead ends: 340 [2021-12-16 01:10:07,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,020 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 25 mSDsluCounter, 539 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,020 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 821 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-12-16 01:10:07,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 337. [2021-12-16 01:10:07,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 277 states have (on average 1.3610108303249098) internal successors, (377), 280 states have internal predecessors, (377), 49 states have call successors, (49), 10 states have call predecessors, (49), 10 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-16 01:10:07,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 475 transitions. [2021-12-16 01:10:07,040 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 475 transitions. Word has length 104 [2021-12-16 01:10:07,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,041 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 475 transitions. [2021-12-16 01:10:07,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:07,041 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 475 transitions. [2021-12-16 01:10:07,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-12-16 01:10:07,045 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,045 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 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] [2021-12-16 01:10:07,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-16 01:10:07,046 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,046 INFO L85 PathProgramCache]: Analyzing trace with hash 598920618, now seen corresponding path program 1 times [2021-12-16 01:10:07,046 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561474309] [2021-12-16 01:10:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,113 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2021-12-16 01:10:07,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561474309] [2021-12-16 01:10:07,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561474309] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:07,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174636519] [2021-12-16 01:10:07,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:07,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:07,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:07,115 INFO L87 Difference]: Start difference. First operand 337 states and 475 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:07,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,145 INFO L93 Difference]: Finished difference Result 604 states and 875 transitions. [2021-12-16 01:10:07,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:07,146 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2021-12-16 01:10:07,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,148 INFO L225 Difference]: With dead ends: 604 [2021-12-16 01:10:07,148 INFO L226 Difference]: Without dead ends: 331 [2021-12-16 01:10:07,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,149 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 15 mSDsluCounter, 512 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 780 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 780 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-12-16 01:10:07,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 331. [2021-12-16 01:10:07,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 272 states have (on average 1.3419117647058822) internal successors, (365), 275 states have internal predecessors, (365), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-16 01:10:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 461 transitions. [2021-12-16 01:10:07,161 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 461 transitions. Word has length 105 [2021-12-16 01:10:07,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,161 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 461 transitions. [2021-12-16 01:10:07,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-16 01:10:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 461 transitions. [2021-12-16 01:10:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 01:10:07,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,163 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:07,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-16 01:10:07,164 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,164 INFO L85 PathProgramCache]: Analyzing trace with hash -590102049, now seen corresponding path program 1 times [2021-12-16 01:10:07,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824167129] [2021-12-16 01:10:07,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,229 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2021-12-16 01:10:07,229 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824167129] [2021-12-16 01:10:07,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824167129] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,230 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:07,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51348661] [2021-12-16 01:10:07,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:07,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:07,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,231 INFO L87 Difference]: Start difference. First operand 331 states and 461 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,246 INFO L93 Difference]: Finished difference Result 579 states and 824 transitions. [2021-12-16 01:10:07,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 124 [2021-12-16 01:10:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,248 INFO L225 Difference]: With dead ends: 579 [2021-12-16 01:10:07,248 INFO L226 Difference]: Without dead ends: 333 [2021-12-16 01:10:07,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,250 INFO L933 BasicCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1079 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-16 01:10:07,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 331. [2021-12-16 01:10:07,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 272 states have (on average 1.3308823529411764) internal successors, (362), 275 states have internal predecessors, (362), 48 states have call successors, (48), 10 states have call predecessors, (48), 10 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-16 01:10:07,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 458 transitions. [2021-12-16 01:10:07,268 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 458 transitions. Word has length 124 [2021-12-16 01:10:07,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,269 INFO L470 AbstractCegarLoop]: Abstraction has 331 states and 458 transitions. [2021-12-16 01:10:07,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:07,269 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 458 transitions. [2021-12-16 01:10:07,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-16 01:10:07,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,270 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:07,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-16 01:10:07,270 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,270 INFO L85 PathProgramCache]: Analyzing trace with hash -717601583, now seen corresponding path program 1 times [2021-12-16 01:10:07,270 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,270 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521804010] [2021-12-16 01:10:07,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,361 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-16 01:10:07,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521804010] [2021-12-16 01:10:07,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521804010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:07,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466280563] [2021-12-16 01:10:07,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:07,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:07,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:07,363 INFO L87 Difference]: Start difference. First operand 331 states and 458 transitions. Second operand has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,404 INFO L93 Difference]: Finished difference Result 542 states and 784 transitions. [2021-12-16 01:10:07,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:07,405 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 157 [2021-12-16 01:10:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,407 INFO L225 Difference]: With dead ends: 542 [2021-12-16 01:10:07,407 INFO L226 Difference]: Without dead ends: 329 [2021-12-16 01:10:07,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,408 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 13 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 748 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-12-16 01:10:07,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2021-12-16 01:10:07,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 271 states have (on average 1.3284132841328413) internal successors, (360), 274 states have internal predecessors, (360), 47 states have call successors, (47), 10 states have call predecessors, (47), 10 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2021-12-16 01:10:07,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 454 transitions. [2021-12-16 01:10:07,419 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 454 transitions. Word has length 157 [2021-12-16 01:10:07,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,419 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 454 transitions. [2021-12-16 01:10:07,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.5) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-16 01:10:07,420 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 454 transitions. [2021-12-16 01:10:07,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-12-16 01:10:07,421 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,421 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 6, 6, 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, 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] [2021-12-16 01:10:07,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-16 01:10:07,422 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,422 INFO L85 PathProgramCache]: Analyzing trace with hash -1055792649, now seen corresponding path program 1 times [2021-12-16 01:10:07,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291784850] [2021-12-16 01:10:07,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:07,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,509 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 408 trivial. 0 not checked. [2021-12-16 01:10:07,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291784850] [2021-12-16 01:10:07,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291784850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:07,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135574789] [2021-12-16 01:10:07,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,511 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:07,511 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:07,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:07,512 INFO L87 Difference]: Start difference. First operand 329 states and 454 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:07,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,569 INFO L93 Difference]: Finished difference Result 482 states and 680 transitions. [2021-12-16 01:10:07,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:07,570 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 172 [2021-12-16 01:10:07,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,572 INFO L225 Difference]: With dead ends: 482 [2021-12-16 01:10:07,572 INFO L226 Difference]: Without dead ends: 312 [2021-12-16 01:10:07,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,574 INFO L933 BasicCegarLoop]: 255 mSDtfsCounter, 35 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 729 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-12-16 01:10:07,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 312. [2021-12-16 01:10:07,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 257 states have (on average 1.3190661478599222) internal successors, (339), 260 states have internal predecessors, (339), 44 states have call successors, (44), 10 states have call predecessors, (44), 10 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2021-12-16 01:10:07,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 427 transitions. [2021-12-16 01:10:07,584 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 427 transitions. Word has length 172 [2021-12-16 01:10:07,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,585 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 427 transitions. [2021-12-16 01:10:07,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:07,585 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 427 transitions. [2021-12-16 01:10:07,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-16 01:10:07,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,586 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 7, 7, 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, 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] [2021-12-16 01:10:07,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-16 01:10:07,587 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1214123782, now seen corresponding path program 1 times [2021-12-16 01:10:07,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531863685] [2021-12-16 01:10:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,678 INFO L134 CoverageAnalysis]: Checked inductivity of 456 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 414 trivial. 0 not checked. [2021-12-16 01:10:07,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531863685] [2021-12-16 01:10:07,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531863685] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:07,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818051243] [2021-12-16 01:10:07,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:07,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:07,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:07,681 INFO L87 Difference]: Start difference. First operand 312 states and 427 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:07,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,717 INFO L93 Difference]: Finished difference Result 465 states and 653 transitions. [2021-12-16 01:10:07,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:07,717 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 174 [2021-12-16 01:10:07,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,719 INFO L225 Difference]: With dead ends: 465 [2021-12-16 01:10:07,720 INFO L226 Difference]: Without dead ends: 293 [2021-12-16 01:10:07,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,721 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 30 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 733 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 733 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-16 01:10:07,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-12-16 01:10:07,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 241 states have (on average 1.3112033195020747) internal successors, (316), 244 states have internal predecessors, (316), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-16 01:10:07,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 398 transitions. [2021-12-16 01:10:07,729 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 398 transitions. Word has length 174 [2021-12-16 01:10:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,730 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 398 transitions. [2021-12-16 01:10:07,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 3 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-16 01:10:07,730 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 398 transitions. [2021-12-16 01:10:07,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-16 01:10:07,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,732 INFO L514 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 7, 6, 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, 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] [2021-12-16 01:10:07,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-16 01:10:07,732 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1416861431, now seen corresponding path program 1 times [2021-12-16 01:10:07,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438120325] [2021-12-16 01:10:07,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:07,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:07,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 399 trivial. 0 not checked. [2021-12-16 01:10:07,812 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438120325] [2021-12-16 01:10:07,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438120325] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:07,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:07,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:07,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184116731] [2021-12-16 01:10:07,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:07,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:07,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:07,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:07,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,814 INFO L87 Difference]: Start difference. First operand 293 states and 398 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-16 01:10:07,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:07,827 INFO L93 Difference]: Finished difference Result 445 states and 623 transitions. [2021-12-16 01:10:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:07,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 175 [2021-12-16 01:10:07,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:07,829 INFO L225 Difference]: With dead ends: 445 [2021-12-16 01:10:07,829 INFO L226 Difference]: Without dead ends: 293 [2021-12-16 01:10:07,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:07,830 INFO L933 BasicCegarLoop]: 266 mSDtfsCounter, 0 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:07,831 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 1057 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-16 01:10:07,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-12-16 01:10:07,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 241 states have (on average 1.2863070539419088) internal successors, (310), 244 states have internal predecessors, (310), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2021-12-16 01:10:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 392 transitions. [2021-12-16 01:10:07,845 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 392 transitions. Word has length 175 [2021-12-16 01:10:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:07,846 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 392 transitions. [2021-12-16 01:10:07,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-16 01:10:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 392 transitions. [2021-12-16 01:10:07,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-16 01:10:07,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:07,848 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 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, 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] [2021-12-16 01:10:07,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-16 01:10:07,848 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:07,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:07,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1467403298, now seen corresponding path program 1 times [2021-12-16 01:10:07,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:07,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [985384358] [2021-12-16 01:10:07,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:07,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:07,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:07,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:07,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:07,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:07,926 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-16 01:10:07,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:07,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [985384358] [2021-12-16 01:10:07,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [985384358] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:07,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513427687] [2021-12-16 01:10:07,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:07,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:07,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:07,928 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) [2021-12-16 01:10:07,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 01:10:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:08,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:08,247 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 138 proven. 11 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-16 01:10:08,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:08,533 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 379 trivial. 0 not checked. [2021-12-16 01:10:08,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513427687] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:08,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-16 01:10:08,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 5 [2021-12-16 01:10:08,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617846639] [2021-12-16 01:10:08,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:08,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:08,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:08,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:08,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:08,535 INFO L87 Difference]: Start difference. First operand 293 states and 392 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 01:10:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:08,566 INFO L93 Difference]: Finished difference Result 466 states and 645 transitions. [2021-12-16 01:10:08,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:08,567 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 182 [2021-12-16 01:10:08,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:08,568 INFO L225 Difference]: With dead ends: 466 [2021-12-16 01:10:08,568 INFO L226 Difference]: Without dead ends: 272 [2021-12-16 01:10:08,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 391 GetRequests, 386 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:08,569 INFO L933 BasicCegarLoop]: 263 mSDtfsCounter, 35 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:08,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 501 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:08,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2021-12-16 01:10:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2021-12-16 01:10:08,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 223 states have (on average 1.2780269058295963) internal successors, (285), 226 states have internal predecessors, (285), 38 states have call successors, (38), 10 states have call predecessors, (38), 10 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 01:10:08,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 361 transitions. [2021-12-16 01:10:08,577 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 361 transitions. Word has length 182 [2021-12-16 01:10:08,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:08,577 INFO L470 AbstractCegarLoop]: Abstraction has 272 states and 361 transitions. [2021-12-16 01:10:08,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-16 01:10:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 361 transitions. [2021-12-16 01:10:08,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-16 01:10:08,579 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:08,580 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 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, 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] [2021-12-16 01:10:08,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:08,797 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,SelfDestructingSolverStorable16 [2021-12-16 01:10:08,797 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:08,797 INFO L85 PathProgramCache]: Analyzing trace with hash 347787473, now seen corresponding path program 1 times [2021-12-16 01:10:08,798 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:08,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798487631] [2021-12-16 01:10:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:08,798 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:08,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:08,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:08,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:08,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:08,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:08,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:08,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:08,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,869 INFO L134 CoverageAnalysis]: Checked inductivity of 552 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-16 01:10:08,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:08,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798487631] [2021-12-16 01:10:08,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798487631] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:08,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:08,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:08,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922672547] [2021-12-16 01:10:08,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:08,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:08,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:08,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:08,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:08,871 INFO L87 Difference]: Start difference. First operand 272 states and 361 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-16 01:10:08,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:08,888 INFO L93 Difference]: Finished difference Result 423 states and 587 transitions. [2021-12-16 01:10:08,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:08,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 206 [2021-12-16 01:10:08,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:08,890 INFO L225 Difference]: With dead ends: 423 [2021-12-16 01:10:08,890 INFO L226 Difference]: Without dead ends: 278 [2021-12-16 01:10:08,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:08,891 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 6 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:08,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 773 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:08,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-12-16 01:10:08,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 276. [2021-12-16 01:10:08,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 226 states have (on average 1.2743362831858407) internal successors, (288), 229 states have internal predecessors, (288), 38 states have call successors, (38), 11 states have call predecessors, (38), 11 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 01:10:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 364 transitions. [2021-12-16 01:10:08,898 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 364 transitions. Word has length 206 [2021-12-16 01:10:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:08,898 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 364 transitions. [2021-12-16 01:10:08,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-16 01:10:08,898 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 364 transitions. [2021-12-16 01:10:08,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2021-12-16 01:10:08,900 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:08,900 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 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, 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] [2021-12-16 01:10:08,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-16 01:10:08,900 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:08,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:08,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1054391106, now seen corresponding path program 1 times [2021-12-16 01:10:08,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:08,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737309665] [2021-12-16 01:10:08,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:08,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:08,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:08,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:08,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:08,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:08,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:08,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:08,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:08,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:08,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:08,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:08,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-16 01:10:08,993 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:08,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737309665] [2021-12-16 01:10:08,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737309665] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:08,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [797770721] [2021-12-16 01:10:08,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:08,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:08,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:08,995 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) [2021-12-16 01:10:09,019 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 01:10:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 694 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:09,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:09,383 INFO L134 CoverageAnalysis]: Checked inductivity of 554 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 552 trivial. 0 not checked. [2021-12-16 01:10:09,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:09,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [797770721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:09,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:09,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:09,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644068414] [2021-12-16 01:10:09,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:09,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:09,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:09,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:09,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:09,386 INFO L87 Difference]: Start difference. First operand 276 states and 364 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 01:10:09,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:09,406 INFO L93 Difference]: Finished difference Result 432 states and 594 transitions. [2021-12-16 01:10:09,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:09,406 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 215 [2021-12-16 01:10:09,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:09,407 INFO L225 Difference]: With dead ends: 432 [2021-12-16 01:10:09,408 INFO L226 Difference]: Without dead ends: 283 [2021-12-16 01:10:09,408 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:09,408 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 7 mSDsluCounter, 516 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:09,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 778 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:09,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-12-16 01:10:09,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 281. [2021-12-16 01:10:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 281 states, 230 states have (on average 1.2695652173913043) internal successors, (292), 233 states have internal predecessors, (292), 38 states have call successors, (38), 12 states have call predecessors, (38), 12 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-16 01:10:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 368 transitions. [2021-12-16 01:10:09,416 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 368 transitions. Word has length 215 [2021-12-16 01:10:09,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:09,416 INFO L470 AbstractCegarLoop]: Abstraction has 281 states and 368 transitions. [2021-12-16 01:10:09,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2021-12-16 01:10:09,417 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 368 transitions. [2021-12-16 01:10:09,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-16 01:10:09,419 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:09,419 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 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, 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] [2021-12-16 01:10:09,449 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:09,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:09,649 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:09,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:09,649 INFO L85 PathProgramCache]: Analyzing trace with hash -1477420628, now seen corresponding path program 1 times [2021-12-16 01:10:09,650 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:09,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196699265] [2021-12-16 01:10:09,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:09,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:09,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:09,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:09,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:09,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:09,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:09,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:09,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:09,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:09,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:09,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:09,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,765 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-12-16 01:10:09,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:09,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196699265] [2021-12-16 01:10:09,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196699265] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:09,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677682486] [2021-12-16 01:10:09,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:09,766 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:09,766 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:09,780 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) [2021-12-16 01:10:09,781 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 01:10:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:09,924 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:09,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:10,229 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 556 trivial. 0 not checked. [2021-12-16 01:10:10,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:10,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677682486] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:10,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:10,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:10,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421922084] [2021-12-16 01:10:10,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:10,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:10,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:10,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:10,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:10,230 INFO L87 Difference]: Start difference. First operand 281 states and 368 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 01:10:10,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:10,248 INFO L93 Difference]: Finished difference Result 434 states and 592 transitions. [2021-12-16 01:10:10,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:10,248 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 225 [2021-12-16 01:10:10,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:10,250 INFO L225 Difference]: With dead ends: 434 [2021-12-16 01:10:10,250 INFO L226 Difference]: Without dead ends: 280 [2021-12-16 01:10:10,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 262 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:10,250 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 7 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:10,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 764 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:10,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2021-12-16 01:10:10,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 280. [2021-12-16 01:10:10,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 230 states have (on average 1.2565217391304349) internal successors, (289), 232 states have internal predecessors, (289), 37 states have call successors, (37), 12 states have call predecessors, (37), 12 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-16 01:10:10,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 363 transitions. [2021-12-16 01:10:10,257 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 363 transitions. Word has length 225 [2021-12-16 01:10:10,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:10,257 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 363 transitions. [2021-12-16 01:10:10,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 3 states have internal predecessors, (69), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-12-16 01:10:10,257 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 363 transitions. [2021-12-16 01:10:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-16 01:10:10,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:10,259 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 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, 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] [2021-12-16 01:10:10,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:10,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:10,471 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:10,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:10,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1684487284, now seen corresponding path program 1 times [2021-12-16 01:10:10,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:10,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362015397] [2021-12-16 01:10:10,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:10,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:10,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:10,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:10,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:10,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:10,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:10,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:10,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-12-16 01:10:10,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:10,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362015397] [2021-12-16 01:10:10,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362015397] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:10,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:10,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:10,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279109431] [2021-12-16 01:10:10,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:10,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:10,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:10,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:10,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:10,563 INFO L87 Difference]: Start difference. First operand 280 states and 363 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-16 01:10:10,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:10,703 INFO L93 Difference]: Finished difference Result 475 states and 650 transitions. [2021-12-16 01:10:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:10,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 235 [2021-12-16 01:10:10,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:10,705 INFO L225 Difference]: With dead ends: 475 [2021-12-16 01:10:10,705 INFO L226 Difference]: Without dead ends: 322 [2021-12-16 01:10:10,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:10,706 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 183 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 633 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:10,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 633 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:10:10,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-12-16 01:10:10,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 279. [2021-12-16 01:10:10,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 230 states have (on average 1.2521739130434784) internal successors, (288), 231 states have internal predecessors, (288), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-12-16 01:10:10,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 360 transitions. [2021-12-16 01:10:10,719 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 360 transitions. Word has length 235 [2021-12-16 01:10:10,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:10,719 INFO L470 AbstractCegarLoop]: Abstraction has 279 states and 360 transitions. [2021-12-16 01:10:10,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-16 01:10:10,720 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 360 transitions. [2021-12-16 01:10:10,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-16 01:10:10,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:10,722 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 6, 6, 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, 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] [2021-12-16 01:10:10,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-16 01:10:10,723 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:10,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:10,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1937286894, now seen corresponding path program 1 times [2021-12-16 01:10:10,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:10,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206156010] [2021-12-16 01:10:10,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:10,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:10,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:10,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:10,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:10,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:10,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:10,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:10,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:10,867 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 565 trivial. 0 not checked. [2021-12-16 01:10:10,867 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:10,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206156010] [2021-12-16 01:10:10,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206156010] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:10,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:10,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:10,868 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110263181] [2021-12-16 01:10:10,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:10,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:10,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:10,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:10,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:10,869 INFO L87 Difference]: Start difference. First operand 279 states and 360 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 01:10:11,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:11,183 INFO L93 Difference]: Finished difference Result 655 states and 874 transitions. [2021-12-16 01:10:11,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:10:11,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 236 [2021-12-16 01:10:11,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:11,187 INFO L225 Difference]: With dead ends: 655 [2021-12-16 01:10:11,187 INFO L226 Difference]: Without dead ends: 503 [2021-12-16 01:10:11,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:10:11,189 INFO L933 BasicCegarLoop]: 325 mSDtfsCounter, 419 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 226 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 299 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:11,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 843 Invalid, 299 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 226 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:11,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2021-12-16 01:10:11,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 440. [2021-12-16 01:10:11,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 361 states have (on average 1.299168975069252) internal successors, (469), 363 states have internal predecessors, (469), 54 states have call successors, (54), 24 states have call predecessors, (54), 24 states have return successors, (54), 53 states have call predecessors, (54), 54 states have call successors, (54) [2021-12-16 01:10:11,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 577 transitions. [2021-12-16 01:10:11,207 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 577 transitions. Word has length 236 [2021-12-16 01:10:11,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:11,207 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 577 transitions. [2021-12-16 01:10:11,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 01:10:11,208 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 577 transitions. [2021-12-16 01:10:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2021-12-16 01:10:11,210 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:11,210 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 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, 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] [2021-12-16 01:10:11,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-16 01:10:11,211 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:11,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1634448199, now seen corresponding path program 1 times [2021-12-16 01:10:11,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:11,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441396051] [2021-12-16 01:10:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:11,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:11,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:11,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:11,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:11,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:11,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:11,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:11,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:11,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:11,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:11,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:11,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:11,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:11,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-16 01:10:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-12-16 01:10:11,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-12-16 01:10:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,324 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-12-16 01:10:11,324 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:11,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441396051] [2021-12-16 01:10:11,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441396051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:11,324 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:11,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:11,324 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023066092] [2021-12-16 01:10:11,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:11,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:11,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:11,325 INFO L87 Difference]: Start difference. First operand 440 states and 577 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 01:10:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:11,534 INFO L93 Difference]: Finished difference Result 929 states and 1271 transitions. [2021-12-16 01:10:11,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:11,535 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 265 [2021-12-16 01:10:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:11,537 INFO L225 Difference]: With dead ends: 929 [2021-12-16 01:10:11,537 INFO L226 Difference]: Without dead ends: 693 [2021-12-16 01:10:11,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:11,538 INFO L933 BasicCegarLoop]: 279 mSDtfsCounter, 214 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:11,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 611 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:11,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2021-12-16 01:10:11,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 531. [2021-12-16 01:10:11,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 442 states have (on average 1.3076923076923077) internal successors, (578), 445 states have internal predecessors, (578), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (59), 58 states have call predecessors, (59), 59 states have call successors, (59) [2021-12-16 01:10:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 696 transitions. [2021-12-16 01:10:11,579 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 696 transitions. Word has length 265 [2021-12-16 01:10:11,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:11,579 INFO L470 AbstractCegarLoop]: Abstraction has 531 states and 696 transitions. [2021-12-16 01:10:11,579 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 3 states have internal predecessors, (87), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 01:10:11,579 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 696 transitions. [2021-12-16 01:10:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2021-12-16 01:10:11,581 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:11,581 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 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, 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] [2021-12-16 01:10:11,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-16 01:10:11,582 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:11,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1733084103, now seen corresponding path program 1 times [2021-12-16 01:10:11,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:11,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204430674] [2021-12-16 01:10:11,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:11,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:11,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:11,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:11,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:11,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:11,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:11,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:11,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:11,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:11,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:11,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:11,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:11,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:11,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:11,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:11,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-16 01:10:11,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-16 01:10:11,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-16 01:10:11,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-12-16 01:10:11,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:11,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204430674] [2021-12-16 01:10:11,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204430674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:11,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:11,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:11,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2510753] [2021-12-16 01:10:11,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:11,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:11,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:11,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:11,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:11,701 INFO L87 Difference]: Start difference. First operand 531 states and 696 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 01:10:11,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:11,908 INFO L93 Difference]: Finished difference Result 1121 states and 1524 transitions. [2021-12-16 01:10:11,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:11,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 266 [2021-12-16 01:10:11,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:11,911 INFO L225 Difference]: With dead ends: 1121 [2021-12-16 01:10:11,912 INFO L226 Difference]: Without dead ends: 829 [2021-12-16 01:10:11,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:11,913 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 217 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:11,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 645 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-12-16 01:10:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 651. [2021-12-16 01:10:11,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 550 states have (on average 1.3163636363636364) internal successors, (724), 555 states have internal predecessors, (724), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-16 01:10:11,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 854 transitions. [2021-12-16 01:10:11,933 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 854 transitions. Word has length 266 [2021-12-16 01:10:11,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:11,933 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 854 transitions. [2021-12-16 01:10:11,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 3 states have internal predecessors, (88), 3 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 01:10:11,933 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 854 transitions. [2021-12-16 01:10:11,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-16 01:10:11,934 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:11,934 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 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, 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, 1] [2021-12-16 01:10:11,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-16 01:10:11,935 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:11,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:11,935 INFO L85 PathProgramCache]: Analyzing trace with hash 2100471702, now seen corresponding path program 1 times [2021-12-16 01:10:11,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:11,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16135412] [2021-12-16 01:10:11,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:11,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:11,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:12,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:12,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:12,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:12,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:12,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:12,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:12,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:12,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:12,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:12,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:12,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:12,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-12-16 01:10:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-16 01:10:12,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,098 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2021-12-16 01:10:12,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:12,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16135412] [2021-12-16 01:10:12,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16135412] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:12,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281997708] [2021-12-16 01:10:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:12,099 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:12,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:12,116 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) [2021-12-16 01:10:12,130 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 01:10:12,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 915 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 01:10:12,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:12,523 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 579 trivial. 0 not checked. [2021-12-16 01:10:12,523 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:12,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281997708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:12,523 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:12,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-16 01:10:12,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404382645] [2021-12-16 01:10:12,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:12,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:12,524 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:12,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:12,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:10:12,524 INFO L87 Difference]: Start difference. First operand 651 states and 854 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:10:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:12,583 INFO L93 Difference]: Finished difference Result 1037 states and 1394 transitions. [2021-12-16 01:10:12,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:12,583 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 267 [2021-12-16 01:10:12,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:12,586 INFO L225 Difference]: With dead ends: 1037 [2021-12-16 01:10:12,586 INFO L226 Difference]: Without dead ends: 651 [2021-12-16 01:10:12,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 319 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:10:12,587 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 51 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:12,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 681 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2021-12-16 01:10:12,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2021-12-16 01:10:12,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 550 states have (on average 1.3054545454545454) internal successors, (718), 555 states have internal predecessors, (718), 65 states have call successors, (65), 35 states have call predecessors, (65), 35 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-16 01:10:12,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 848 transitions. [2021-12-16 01:10:12,604 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 848 transitions. Word has length 267 [2021-12-16 01:10:12,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:12,604 INFO L470 AbstractCegarLoop]: Abstraction has 651 states and 848 transitions. [2021-12-16 01:10:12,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:10:12,605 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 848 transitions. [2021-12-16 01:10:12,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2021-12-16 01:10:12,606 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:12,606 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 5, 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, 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, 1, 1, 1] [2021-12-16 01:10:12,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:12,823 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,SelfDestructingSolverStorable24 [2021-12-16 01:10:12,823 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:12,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:12,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1830281755, now seen corresponding path program 1 times [2021-12-16 01:10:12,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:12,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216950366] [2021-12-16 01:10:12,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:12,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:12,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:12,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:12,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:12,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:12,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:12,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:12,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:12,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:12,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:12,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:12,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:12,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-16 01:10:12,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:12,946 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 12 proven. 10 refuted. 0 times theorem prover too weak. 617 trivial. 0 not checked. [2021-12-16 01:10:12,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:12,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216950366] [2021-12-16 01:10:12,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216950366] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:12,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499801574] [2021-12-16 01:10:12,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:12,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:12,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:12,947 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) [2021-12-16 01:10:12,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 01:10:13,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 916 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 01:10:13,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:13,409 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2021-12-16 01:10:13,409 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:13,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499801574] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:13,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:13,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2021-12-16 01:10:13,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168364348] [2021-12-16 01:10:13,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:13,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:13,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:13,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:13,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:10:13,411 INFO L87 Difference]: Start difference. First operand 651 states and 848 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:10:13,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:13,484 INFO L93 Difference]: Finished difference Result 1037 states and 1380 transitions. [2021-12-16 01:10:13,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:13,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 268 [2021-12-16 01:10:13,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:13,487 INFO L225 Difference]: With dead ends: 1037 [2021-12-16 01:10:13,487 INFO L226 Difference]: Without dead ends: 663 [2021-12-16 01:10:13,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-16 01:10:13,489 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 15 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:13,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 704 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:13,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-12-16 01:10:13,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 663. [2021-12-16 01:10:13,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 663 states, 560 states have (on average 1.3071428571428572) internal successors, (732), 565 states have internal predecessors, (732), 65 states have call successors, (65), 37 states have call predecessors, (65), 37 states have return successors, (65), 64 states have call predecessors, (65), 65 states have call successors, (65) [2021-12-16 01:10:13,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 663 states to 663 states and 862 transitions. [2021-12-16 01:10:13,515 INFO L78 Accepts]: Start accepts. Automaton has 663 states and 862 transitions. Word has length 268 [2021-12-16 01:10:13,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:13,515 INFO L470 AbstractCegarLoop]: Abstraction has 663 states and 862 transitions. [2021-12-16 01:10:13,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 01:10:13,516 INFO L276 IsEmpty]: Start isEmpty. Operand 663 states and 862 transitions. [2021-12-16 01:10:13,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-16 01:10:13,517 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:13,519 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 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, 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, 1, 1, 1, 1, 1] [2021-12-16 01:10:13,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:13,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2021-12-16 01:10:13,731 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:13,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:13,732 INFO L85 PathProgramCache]: Analyzing trace with hash 632640880, now seen corresponding path program 1 times [2021-12-16 01:10:13,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:13,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107923532] [2021-12-16 01:10:13,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:13,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:13,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:13,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:13,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:13,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:13,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:13,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:13,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:13,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:13,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:13,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:13,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:13,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:13,948 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2021-12-16 01:10:13,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:13,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107923532] [2021-12-16 01:10:13,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107923532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:13,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:13,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:10:13,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708543671] [2021-12-16 01:10:13,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:13,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:10:13,948 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:13,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:10:13,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:10:13,949 INFO L87 Difference]: Start difference. First operand 663 states and 862 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-16 01:10:14,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:14,278 INFO L93 Difference]: Finished difference Result 931 states and 1277 transitions. [2021-12-16 01:10:14,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:10:14,279 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 269 [2021-12-16 01:10:14,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:14,283 INFO L225 Difference]: With dead ends: 931 [2021-12-16 01:10:14,283 INFO L226 Difference]: Without dead ends: 929 [2021-12-16 01:10:14,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-12-16 01:10:14,284 INFO L933 BasicCegarLoop]: 384 mSDtfsCounter, 256 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:14,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 1809 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:14,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2021-12-16 01:10:14,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 669. [2021-12-16 01:10:14,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 564 states have (on average 1.3049645390070923) internal successors, (736), 570 states have internal predecessors, (736), 66 states have call successors, (66), 38 states have call predecessors, (66), 38 states have return successors, (66), 64 states have call predecessors, (66), 66 states have call successors, (66) [2021-12-16 01:10:14,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 868 transitions. [2021-12-16 01:10:14,309 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 868 transitions. Word has length 269 [2021-12-16 01:10:14,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:14,310 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 868 transitions. [2021-12-16 01:10:14,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 5 states have internal predecessors, (93), 2 states have call successors, (15), 3 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-16 01:10:14,310 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 868 transitions. [2021-12-16 01:10:14,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-12-16 01:10:14,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:14,312 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:14,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-16 01:10:14,313 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:14,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:14,313 INFO L85 PathProgramCache]: Analyzing trace with hash -2002921446, now seen corresponding path program 1 times [2021-12-16 01:10:14,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:14,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440672008] [2021-12-16 01:10:14,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,314 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:14,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:14,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:14,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:14,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:14,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:14,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:14,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:14,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:14,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:14,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,508 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2021-12-16 01:10:14,508 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:14,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440672008] [2021-12-16 01:10:14,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440672008] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:14,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953396546] [2021-12-16 01:10:14,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:14,509 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:14,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:14,510 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) [2021-12-16 01:10:14,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 01:10:14,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:14,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-16 01:10:14,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:15,126 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2021-12-16 01:10:15,126 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:15,621 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2021-12-16 01:10:15,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953396546] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:15,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:15,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 19 [2021-12-16 01:10:15,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096132626] [2021-12-16 01:10:15,622 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:15,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-16 01:10:15,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:15,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-16 01:10:15,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-16 01:10:15,624 INFO L87 Difference]: Start difference. First operand 669 states and 868 transitions. Second operand has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-16 01:10:17,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:17,028 INFO L93 Difference]: Finished difference Result 1897 states and 2639 transitions. [2021-12-16 01:10:17,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 01:10:17,028 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 277 [2021-12-16 01:10:17,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:17,034 INFO L225 Difference]: With dead ends: 1897 [2021-12-16 01:10:17,034 INFO L226 Difference]: Without dead ends: 1505 [2021-12-16 01:10:17,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 635 GetRequests, 600 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=211, Invalid=1121, Unknown=0, NotChecked=0, Total=1332 [2021-12-16 01:10:17,044 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 715 mSDsluCounter, 3537 mSDsCounter, 0 mSdLazyCounter, 1890 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 3919 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:17,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 3919 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1890 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-16 01:10:17,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1505 states. [2021-12-16 01:10:17,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1505 to 940. [2021-12-16 01:10:17,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 940 states, 795 states have (on average 1.3018867924528301) internal successors, (1035), 802 states have internal predecessors, (1035), 90 states have call successors, (90), 51 states have call predecessors, (90), 54 states have return successors, (95), 90 states have call predecessors, (95), 90 states have call successors, (95) [2021-12-16 01:10:17,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 940 states to 940 states and 1220 transitions. [2021-12-16 01:10:17,081 INFO L78 Accepts]: Start accepts. Automaton has 940 states and 1220 transitions. Word has length 277 [2021-12-16 01:10:17,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:17,081 INFO L470 AbstractCegarLoop]: Abstraction has 940 states and 1220 transitions. [2021-12-16 01:10:17,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.947368421052632) internal successors, (151), 14 states have internal predecessors, (151), 5 states have call successors, (28), 5 states have call predecessors, (28), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2021-12-16 01:10:17,082 INFO L276 IsEmpty]: Start isEmpty. Operand 940 states and 1220 transitions. [2021-12-16 01:10:17,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2021-12-16 01:10:17,084 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:17,084 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:17,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:17,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:17,303 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:17,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:17,303 INFO L85 PathProgramCache]: Analyzing trace with hash -1041307429, now seen corresponding path program 1 times [2021-12-16 01:10:17,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:17,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274055110] [2021-12-16 01:10:17,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:17,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:17,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:17,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:17,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:17,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:17,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:17,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:17,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:17,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:17,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:17,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:17,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:17,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:17,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,412 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2021-12-16 01:10:17,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:17,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274055110] [2021-12-16 01:10:17,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274055110] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:17,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1780418451] [2021-12-16 01:10:17,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:17,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:17,413 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:17,413 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) [2021-12-16 01:10:17,415 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 01:10:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:17,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 940 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:17,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:17,843 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2021-12-16 01:10:17,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:17,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1780418451] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:17,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:17,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:17,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84325482] [2021-12-16 01:10:17,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:17,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:17,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:17,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:17,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:17,845 INFO L87 Difference]: Start difference. First operand 940 states and 1220 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 01:10:17,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:17,902 INFO L93 Difference]: Finished difference Result 1743 states and 2304 transitions. [2021-12-16 01:10:17,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:17,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 277 [2021-12-16 01:10:17,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:17,906 INFO L225 Difference]: With dead ends: 1743 [2021-12-16 01:10:17,906 INFO L226 Difference]: Without dead ends: 924 [2021-12-16 01:10:17,907 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 327 GetRequests, 322 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:17,908 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 11 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:17,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 704 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:17,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2021-12-16 01:10:17,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 924. [2021-12-16 01:10:17,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 784 states have (on average 1.2895408163265305) internal successors, (1011), 791 states have internal predecessors, (1011), 86 states have call successors, (86), 51 states have call predecessors, (86), 53 states have return successors, (90), 85 states have call predecessors, (90), 86 states have call successors, (90) [2021-12-16 01:10:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1187 transitions. [2021-12-16 01:10:17,941 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1187 transitions. Word has length 277 [2021-12-16 01:10:17,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:17,942 INFO L470 AbstractCegarLoop]: Abstraction has 924 states and 1187 transitions. [2021-12-16 01:10:17,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-16 01:10:17,942 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1187 transitions. [2021-12-16 01:10:17,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2021-12-16 01:10:17,944 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:17,944 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:17,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:18,148 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,SelfDestructingSolverStorable28 [2021-12-16 01:10:18,148 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:18,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:18,149 INFO L85 PathProgramCache]: Analyzing trace with hash -186615214, now seen corresponding path program 1 times [2021-12-16 01:10:18,149 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:18,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4416332] [2021-12-16 01:10:18,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:18,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:18,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:18,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:18,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:18,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:18,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:18,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:18,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:18,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:18,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-16 01:10:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-16 01:10:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-16 01:10:18,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-16 01:10:18,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-16 01:10:18,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-16 01:10:18,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-16 01:10:18,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-16 01:10:18,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-16 01:10:18,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,233 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2021-12-16 01:10:18,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:18,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4416332] [2021-12-16 01:10:18,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4416332] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:18,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [230516343] [2021-12-16 01:10:18,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:18,234 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:18,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:18,235 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) [2021-12-16 01:10:18,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 01:10:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:18,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:18,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:18,650 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2021-12-16 01:10:18,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:18,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [230516343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:18,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:18,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:18,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556474489] [2021-12-16 01:10:18,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:18,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:18,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:18,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:18,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:18,654 INFO L87 Difference]: Start difference. First operand 924 states and 1187 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:18,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:18,718 INFO L93 Difference]: Finished difference Result 1576 states and 2065 transitions. [2021-12-16 01:10:18,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:18,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 280 [2021-12-16 01:10:18,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:18,721 INFO L225 Difference]: With dead ends: 1576 [2021-12-16 01:10:18,721 INFO L226 Difference]: Without dead ends: 764 [2021-12-16 01:10:18,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 325 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:18,723 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 8 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 707 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:18,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 707 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:18,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2021-12-16 01:10:18,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 764. [2021-12-16 01:10:18,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 764 states, 642 states have (on average 1.2850467289719627) internal successors, (825), 649 states have internal predecessors, (825), 77 states have call successors, (77), 44 states have call predecessors, (77), 44 states have return successors, (77), 74 states have call predecessors, (77), 77 states have call successors, (77) [2021-12-16 01:10:18,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 764 states to 764 states and 979 transitions. [2021-12-16 01:10:18,743 INFO L78 Accepts]: Start accepts. Automaton has 764 states and 979 transitions. Word has length 280 [2021-12-16 01:10:18,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:18,743 INFO L470 AbstractCegarLoop]: Abstraction has 764 states and 979 transitions. [2021-12-16 01:10:18,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-16 01:10:18,744 INFO L276 IsEmpty]: Start isEmpty. Operand 764 states and 979 transitions. [2021-12-16 01:10:18,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-16 01:10:18,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:18,745 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:18,763 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:18,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:18,959 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:18,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:18,960 INFO L85 PathProgramCache]: Analyzing trace with hash -2136317147, now seen corresponding path program 1 times [2021-12-16 01:10:18,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927774564] [2021-12-16 01:10:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:18,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:19,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:19,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:19,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:19,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:19,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:19,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:19,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:19,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:19,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:19,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:19,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:19,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:19,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-16 01:10:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-16 01:10:19,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,289 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 16 proven. 146 refuted. 0 times theorem prover too weak. 567 trivial. 0 not checked. [2021-12-16 01:10:19,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:19,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927774564] [2021-12-16 01:10:19,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927774564] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:19,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151909100] [2021-12-16 01:10:19,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:19,290 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:19,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:19,291 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) [2021-12-16 01:10:19,329 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 01:10:19,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:19,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 988 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-16 01:10:19,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:19,932 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-12-16 01:10:19,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:19,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151909100] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:19,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:19,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2021-12-16 01:10:19,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643398709] [2021-12-16 01:10:19,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:19,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:10:19,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:19,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:10:19,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=460, Unknown=0, NotChecked=0, Total=506 [2021-12-16 01:10:19,934 INFO L87 Difference]: Start difference. First operand 764 states and 979 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:20,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:20,732 INFO L93 Difference]: Finished difference Result 2132 states and 2840 transitions. [2021-12-16 01:10:20,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-16 01:10:20,732 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 292 [2021-12-16 01:10:20,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:20,739 INFO L225 Difference]: With dead ends: 2132 [2021-12-16 01:10:20,739 INFO L226 Difference]: Without dead ends: 1730 [2021-12-16 01:10:20,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 335 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 269 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=252, Invalid=1818, Unknown=0, NotChecked=0, Total=2070 [2021-12-16 01:10:20,741 INFO L933 BasicCegarLoop]: 353 mSDtfsCounter, 1138 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 882 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 1130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:20,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 2591 Invalid, 1130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 882 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:10:20,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2021-12-16 01:10:20,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 990. [2021-12-16 01:10:20,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 990 states, 827 states have (on average 1.2769044740024185) internal successors, (1056), 832 states have internal predecessors, (1056), 103 states have call successors, (103), 59 states have call predecessors, (103), 59 states have return successors, (103), 98 states have call predecessors, (103), 103 states have call successors, (103) [2021-12-16 01:10:20,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1262 transitions. [2021-12-16 01:10:20,787 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1262 transitions. Word has length 292 [2021-12-16 01:10:20,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:20,788 INFO L470 AbstractCegarLoop]: Abstraction has 990 states and 1262 transitions. [2021-12-16 01:10:20,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 9 states have internal predecessors, (110), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:20,788 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1262 transitions. [2021-12-16 01:10:20,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-16 01:10:20,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:20,790 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:20,818 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:21,003 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,SelfDestructingSolverStorable30 [2021-12-16 01:10:21,003 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:21,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:21,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1457044893, now seen corresponding path program 1 times [2021-12-16 01:10:21,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:21,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277146272] [2021-12-16 01:10:21,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:21,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:21,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:21,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:21,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:21,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:21,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:21,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:21,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:21,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:21,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:21,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-16 01:10:21,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-16 01:10:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 279 [2021-12-16 01:10:21,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2021-12-16 01:10:21,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:21,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277146272] [2021-12-16 01:10:21,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277146272] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:21,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:21,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:21,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443727431] [2021-12-16 01:10:21,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:21,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:21,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:21,115 INFO L87 Difference]: Start difference. First operand 990 states and 1262 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 01:10:21,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:21,593 INFO L93 Difference]: Finished difference Result 1870 states and 2421 transitions. [2021-12-16 01:10:21,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 01:10:21,594 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 292 [2021-12-16 01:10:21,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:21,598 INFO L225 Difference]: With dead ends: 1870 [2021-12-16 01:10:21,598 INFO L226 Difference]: Without dead ends: 1245 [2021-12-16 01:10:21,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 53 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:10:21,601 INFO L933 BasicCegarLoop]: 294 mSDtfsCounter, 307 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:21,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 747 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 01:10:21,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1245 states. [2021-12-16 01:10:21,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1245 to 901. [2021-12-16 01:10:21,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 754 states have (on average 1.2758620689655173) internal successors, (962), 758 states have internal predecessors, (962), 92 states have call successors, (92), 54 states have call predecessors, (92), 54 states have return successors, (92), 88 states have call predecessors, (92), 92 states have call successors, (92) [2021-12-16 01:10:21,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1146 transitions. [2021-12-16 01:10:21,640 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1146 transitions. Word has length 292 [2021-12-16 01:10:21,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:21,640 INFO L470 AbstractCegarLoop]: Abstraction has 901 states and 1146 transitions. [2021-12-16 01:10:21,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2021-12-16 01:10:21,640 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1146 transitions. [2021-12-16 01:10:21,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-16 01:10:21,642 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:21,642 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:21,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-16 01:10:21,642 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:21,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:21,642 INFO L85 PathProgramCache]: Analyzing trace with hash -785059678, now seen corresponding path program 1 times [2021-12-16 01:10:21,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:21,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20043056] [2021-12-16 01:10:21,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:21,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:21,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:21,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:21,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:21,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:21,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:21,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:21,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:21,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:21,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:21,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:21,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:21,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:21,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:21,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:21,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-16 01:10:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-16 01:10:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-16 01:10:21,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:21,760 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2021-12-16 01:10:21,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:21,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20043056] [2021-12-16 01:10:21,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20043056] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:21,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:21,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-16 01:10:21,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924435130] [2021-12-16 01:10:21,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:21,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 01:10:21,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:21,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 01:10:21,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:10:21,762 INFO L87 Difference]: Start difference. First operand 901 states and 1146 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:22,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:22,168 INFO L93 Difference]: Finished difference Result 2407 states and 3330 transitions. [2021-12-16 01:10:22,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:10:22,169 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 298 [2021-12-16 01:10:22,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:22,175 INFO L225 Difference]: With dead ends: 2407 [2021-12-16 01:10:22,175 INFO L226 Difference]: Without dead ends: 1856 [2021-12-16 01:10:22,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-16 01:10:22,176 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 505 mSDsluCounter, 1492 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 559 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:22,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [559 Valid, 2024 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:22,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-12-16 01:10:22,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 956. [2021-12-16 01:10:22,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 956 states, 797 states have (on average 1.28732747804266) internal successors, (1026), 801 states have internal predecessors, (1026), 104 states have call successors, (104), 54 states have call predecessors, (104), 54 states have return successors, (104), 100 states have call predecessors, (104), 104 states have call successors, (104) [2021-12-16 01:10:22,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 956 states to 956 states and 1234 transitions. [2021-12-16 01:10:22,213 INFO L78 Accepts]: Start accepts. Automaton has 956 states and 1234 transitions. Word has length 298 [2021-12-16 01:10:22,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:22,213 INFO L470 AbstractCegarLoop]: Abstraction has 956 states and 1234 transitions. [2021-12-16 01:10:22,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 5 states have call successors, (18), 3 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:22,213 INFO L276 IsEmpty]: Start isEmpty. Operand 956 states and 1234 transitions. [2021-12-16 01:10:22,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-16 01:10:22,215 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:22,215 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:22,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-16 01:10:22,215 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:22,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:22,215 INFO L85 PathProgramCache]: Analyzing trace with hash 1679492638, now seen corresponding path program 1 times [2021-12-16 01:10:22,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:22,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095434686] [2021-12-16 01:10:22,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:22,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:22,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:22,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:22,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:22,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:22,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:22,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:22,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:22,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:22,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:22,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:22,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:22,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:22,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:22,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:22,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:22,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-16 01:10:22,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-16 01:10:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-16 01:10:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,543 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2021-12-16 01:10:22,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:22,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095434686] [2021-12-16 01:10:22,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095434686] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:22,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480574016] [2021-12-16 01:10:22,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:22,544 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:22,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:22,544 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) [2021-12-16 01:10:22,545 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 01:10:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:22,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 01:10:22,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:23,076 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2021-12-16 01:10:23,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:23,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480574016] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:23,076 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:23,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [18] total 24 [2021-12-16 01:10:23,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042867303] [2021-12-16 01:10:23,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:23,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 01:10:23,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:23,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 01:10:23,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-12-16 01:10:23,077 INFO L87 Difference]: Start difference. First operand 956 states and 1234 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 01:10:23,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:23,458 INFO L93 Difference]: Finished difference Result 2267 states and 3068 transitions. [2021-12-16 01:10:23,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-16 01:10:23,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 298 [2021-12-16 01:10:23,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:23,464 INFO L225 Difference]: With dead ends: 2267 [2021-12-16 01:10:23,464 INFO L226 Difference]: Without dead ends: 1668 [2021-12-16 01:10:23,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2021-12-16 01:10:23,466 INFO L933 BasicCegarLoop]: 450 mSDtfsCounter, 498 mSDsluCounter, 1838 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 511 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:23,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [511 Valid, 2288 Invalid, 617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-16 01:10:23,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1668 states. [2021-12-16 01:10:23,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1668 to 1176. [2021-12-16 01:10:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1176 states, 974 states have (on average 1.284394250513347) internal successors, (1251), 980 states have internal predecessors, (1251), 137 states have call successors, (137), 64 states have call predecessors, (137), 64 states have return successors, (137), 131 states have call predecessors, (137), 137 states have call successors, (137) [2021-12-16 01:10:23,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1176 states to 1176 states and 1525 transitions. [2021-12-16 01:10:23,514 INFO L78 Accepts]: Start accepts. Automaton has 1176 states and 1525 transitions. Word has length 298 [2021-12-16 01:10:23,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:23,514 INFO L470 AbstractCegarLoop]: Abstraction has 1176 states and 1525 transitions. [2021-12-16 01:10:23,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-16 01:10:23,515 INFO L276 IsEmpty]: Start isEmpty. Operand 1176 states and 1525 transitions. [2021-12-16 01:10:23,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2021-12-16 01:10:23,516 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:23,516 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:23,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:23,720 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,SelfDestructingSolverStorable33 [2021-12-16 01:10:23,721 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:23,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1940141538, now seen corresponding path program 1 times [2021-12-16 01:10:23,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:23,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546385972] [2021-12-16 01:10:23,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:23,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:23,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:23,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:23,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:23,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:23,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:23,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:23,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:23,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:23,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:24,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:24,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:24,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:24,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-16 01:10:24,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-16 01:10:24,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-16 01:10:24,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:24,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,102 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2021-12-16 01:10:24,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546385972] [2021-12-16 01:10:24,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546385972] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:24,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154733548] [2021-12-16 01:10:24,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:24,103 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:24,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:24,104 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) [2021-12-16 01:10:24,131 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 01:10:24,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:24,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-16 01:10:24,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:24,615 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2021-12-16 01:10:24,615 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:24,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154733548] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:24,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:24,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [16] total 17 [2021-12-16 01:10:24,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408794736] [2021-12-16 01:10:24,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:24,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-16 01:10:24,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:24,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-16 01:10:24,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-16 01:10:24,617 INFO L87 Difference]: Start difference. First operand 1176 states and 1525 transitions. Second operand has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:25,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:25,578 INFO L93 Difference]: Finished difference Result 3751 states and 5100 transitions. [2021-12-16 01:10:25,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-16 01:10:25,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 298 [2021-12-16 01:10:25,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:25,592 INFO L225 Difference]: With dead ends: 3751 [2021-12-16 01:10:25,592 INFO L226 Difference]: Without dead ends: 2920 [2021-12-16 01:10:25,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 345 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=168, Invalid=954, Unknown=0, NotChecked=0, Total=1122 [2021-12-16 01:10:25,596 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 1301 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 1315 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 4101 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:25,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1316 Valid, 4101 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1315 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-16 01:10:25,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2021-12-16 01:10:25,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 1555. [2021-12-16 01:10:25,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1555 states, 1278 states have (on average 1.2848200312989044) internal successors, (1642), 1288 states have internal predecessors, (1642), 192 states have call successors, (192), 84 states have call predecessors, (192), 84 states have return successors, (192), 182 states have call predecessors, (192), 192 states have call successors, (192) [2021-12-16 01:10:25,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1555 states to 1555 states and 2026 transitions. [2021-12-16 01:10:25,692 INFO L78 Accepts]: Start accepts. Automaton has 1555 states and 2026 transitions. Word has length 298 [2021-12-16 01:10:25,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:25,693 INFO L470 AbstractCegarLoop]: Abstraction has 1555 states and 2026 transitions. [2021-12-16 01:10:25,693 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.7) internal successors, (117), 9 states have internal predecessors, (117), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-16 01:10:25,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1555 states and 2026 transitions. [2021-12-16 01:10:25,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2021-12-16 01:10:25,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:25,696 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:25,718 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:25,911 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,SelfDestructingSolverStorable34 [2021-12-16 01:10:25,912 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:25,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:25,912 INFO L85 PathProgramCache]: Analyzing trace with hash -19843425, now seen corresponding path program 1 times [2021-12-16 01:10:25,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:25,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974809431] [2021-12-16 01:10:25,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:25,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:25,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:25,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:25,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:25,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:25,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:25,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:25,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:25,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:25,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:25,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:25,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:26,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:26,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:26,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:26,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-16 01:10:26,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-16 01:10:26,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 710 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 708 trivial. 0 not checked. [2021-12-16 01:10:26,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:26,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974809431] [2021-12-16 01:10:26,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974809431] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:26,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:26,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:26,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819771994] [2021-12-16 01:10:26,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:26,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:26,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:26,020 INFO L87 Difference]: Start difference. First operand 1555 states and 2026 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-16 01:10:26,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:26,480 INFO L93 Difference]: Finished difference Result 2665 states and 3499 transitions. [2021-12-16 01:10:26,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 01:10:26,481 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 311 [2021-12-16 01:10:26,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:26,486 INFO L225 Difference]: With dead ends: 2665 [2021-12-16 01:10:26,486 INFO L226 Difference]: Without dead ends: 1475 [2021-12-16 01:10:26,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:10:26,489 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 509 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 529 SdHoareTripleChecker+Valid, 1030 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:26,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [529 Valid, 1030 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 01:10:26,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1475 states. [2021-12-16 01:10:26,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1475 to 1200. [2021-12-16 01:10:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1200 states, 998 states have (on average 1.2635270541082164) internal successors, (1261), 1004 states have internal predecessors, (1261), 141 states have call successors, (141), 60 states have call predecessors, (141), 60 states have return successors, (141), 135 states have call predecessors, (141), 141 states have call successors, (141) [2021-12-16 01:10:26,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1200 states to 1200 states and 1543 transitions. [2021-12-16 01:10:26,544 INFO L78 Accepts]: Start accepts. Automaton has 1200 states and 1543 transitions. Word has length 311 [2021-12-16 01:10:26,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:26,544 INFO L470 AbstractCegarLoop]: Abstraction has 1200 states and 1543 transitions. [2021-12-16 01:10:26,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-16 01:10:26,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1200 states and 1543 transitions. [2021-12-16 01:10:26,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:26,548 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:26,548 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:26,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-16 01:10:26,548 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:26,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:26,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1173087113, now seen corresponding path program 1 times [2021-12-16 01:10:26,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:26,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680179445] [2021-12-16 01:10:26,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:26,549 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:26,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:26,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:26,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:26,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:26,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:26,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:26,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:26,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:26,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:26,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:26,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:26,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:26,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:26,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:26,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:26,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:26,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:26,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:26,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:26,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:26,826 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-12-16 01:10:26,826 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:26,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680179445] [2021-12-16 01:10:26,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680179445] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:26,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791388711] [2021-12-16 01:10:26,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:26,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:26,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:26,828 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) [2021-12-16 01:10:26,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 01:10:27,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:27,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 1283 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-16 01:10:27,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 151 proven. 33 refuted. 0 times theorem prover too weak. 697 trivial. 0 not checked. [2021-12-16 01:10:27,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:28,076 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2021-12-16 01:10:28,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791388711] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:28,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:28,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12, 9] total 32 [2021-12-16 01:10:28,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4032358] [2021-12-16 01:10:28,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:28,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-16 01:10:28,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:28,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-16 01:10:28,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=914, Unknown=0, NotChecked=0, Total=992 [2021-12-16 01:10:28,078 INFO L87 Difference]: Start difference. First operand 1200 states and 1543 transitions. Second operand has 32 states, 32 states have (on average 6.8125) internal successors, (218), 27 states have internal predecessors, (218), 8 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (46), 12 states have call predecessors, (46), 8 states have call successors, (46) [2021-12-16 01:10:34,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:34,065 INFO L93 Difference]: Finished difference Result 4164 states and 5697 transitions. [2021-12-16 01:10:34,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2021-12-16 01:10:34,066 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 6.8125) internal successors, (218), 27 states have internal predecessors, (218), 8 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (46), 12 states have call predecessors, (46), 8 states have call successors, (46) Word has length 352 [2021-12-16 01:10:34,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:34,079 INFO L225 Difference]: With dead ends: 4164 [2021-12-16 01:10:34,079 INFO L226 Difference]: Without dead ends: 3331 [2021-12-16 01:10:34,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 894 GetRequests, 778 SyntacticMatches, 1 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3706 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=1067, Invalid=12505, Unknown=0, NotChecked=0, Total=13572 [2021-12-16 01:10:34,085 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 2504 mSDsluCounter, 9382 mSDsCounter, 0 mSdLazyCounter, 9542 mSolverCounterSat, 1195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2518 SdHoareTripleChecker+Valid, 9972 SdHoareTripleChecker+Invalid, 10737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1195 IncrementalHoareTripleChecker+Valid, 9542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:34,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2518 Valid, 9972 Invalid, 10737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1195 Valid, 9542 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2021-12-16 01:10:34,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3331 states. [2021-12-16 01:10:34,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3331 to 1601. [2021-12-16 01:10:34,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1333 states have (on average 1.264066016504126) internal successors, (1685), 1342 states have internal predecessors, (1685), 173 states have call successors, (173), 85 states have call predecessors, (173), 94 states have return successors, (188), 173 states have call predecessors, (188), 173 states have call successors, (188) [2021-12-16 01:10:34,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2046 transitions. [2021-12-16 01:10:34,191 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2046 transitions. Word has length 352 [2021-12-16 01:10:34,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:34,191 INFO L470 AbstractCegarLoop]: Abstraction has 1601 states and 2046 transitions. [2021-12-16 01:10:34,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 6.8125) internal successors, (218), 27 states have internal predecessors, (218), 8 states have call successors, (45), 6 states have call predecessors, (45), 10 states have return successors, (46), 12 states have call predecessors, (46), 8 states have call successors, (46) [2021-12-16 01:10:34,192 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2046 transitions. [2021-12-16 01:10:34,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:34,194 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:34,195 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:34,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:34,411 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,SelfDestructingSolverStorable36 [2021-12-16 01:10:34,411 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:34,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:34,412 INFO L85 PathProgramCache]: Analyzing trace with hash 623485226, now seen corresponding path program 1 times [2021-12-16 01:10:34,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:34,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351751804] [2021-12-16 01:10:34,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:34,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:34,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:34,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:34,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:34,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:34,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:34,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:34,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:34,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:34,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:34,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:34,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:34,549 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 853 trivial. 0 not checked. [2021-12-16 01:10:34,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:34,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351751804] [2021-12-16 01:10:34,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351751804] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:34,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:34,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 01:10:34,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758495135] [2021-12-16 01:10:34,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:34,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 01:10:34,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:34,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 01:10:34,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:10:34,552 INFO L87 Difference]: Start difference. First operand 1601 states and 2046 transitions. Second operand has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-16 01:10:35,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:35,280 INFO L93 Difference]: Finished difference Result 3209 states and 4198 transitions. [2021-12-16 01:10:35,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-16 01:10:35,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 352 [2021-12-16 01:10:35,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:35,287 INFO L225 Difference]: With dead ends: 3209 [2021-12-16 01:10:35,287 INFO L226 Difference]: Without dead ends: 2291 [2021-12-16 01:10:35,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2021-12-16 01:10:35,289 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 561 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 2236 SdHoareTripleChecker+Invalid, 1354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:35,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 2236 Invalid, 1354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1223 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 01:10:35,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2021-12-16 01:10:35,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 1594. [2021-12-16 01:10:35,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1594 states, 1330 states have (on average 1.256390977443609) internal successors, (1671), 1340 states have internal predecessors, (1671), 167 states have call successors, (167), 87 states have call predecessors, (167), 96 states have return successors, (178), 166 states have call predecessors, (178), 167 states have call successors, (178) [2021-12-16 01:10:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1594 states to 1594 states and 2016 transitions. [2021-12-16 01:10:35,367 INFO L78 Accepts]: Start accepts. Automaton has 1594 states and 2016 transitions. Word has length 352 [2021-12-16 01:10:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:35,367 INFO L470 AbstractCegarLoop]: Abstraction has 1594 states and 2016 transitions. [2021-12-16 01:10:35,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.88888888888889) internal successors, (116), 7 states have internal predecessors, (116), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-16 01:10:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1594 states and 2016 transitions. [2021-12-16 01:10:35,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:35,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:35,370 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:35,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-16 01:10:35,370 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:35,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:35,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1387268054, now seen corresponding path program 1 times [2021-12-16 01:10:35,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:35,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208360990] [2021-12-16 01:10:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:35,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:35,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:35,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:35,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:35,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:35,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:35,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:35,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:35,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-16 01:10:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:35,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:35,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:35,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:35,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,470 INFO L134 CoverageAnalysis]: Checked inductivity of 881 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 873 trivial. 0 not checked. [2021-12-16 01:10:35,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:35,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208360990] [2021-12-16 01:10:35,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208360990] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:35,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:35,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 01:10:35,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964906708] [2021-12-16 01:10:35,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:35,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 01:10:35,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:35,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 01:10:35,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:35,471 INFO L87 Difference]: Start difference. First operand 1594 states and 2016 transitions. Second operand has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 01:10:35,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:35,774 INFO L93 Difference]: Finished difference Result 2725 states and 3480 transitions. [2021-12-16 01:10:35,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 01:10:35,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) Word has length 352 [2021-12-16 01:10:35,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:35,779 INFO L225 Difference]: With dead ends: 2725 [2021-12-16 01:10:35,779 INFO L226 Difference]: Without dead ends: 1603 [2021-12-16 01:10:35,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-16 01:10:35,781 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 287 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 303 SdHoareTripleChecker+Valid, 507 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:35,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [303 Valid, 507 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 327 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:35,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1603 states. [2021-12-16 01:10:35,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1603 to 1600. [2021-12-16 01:10:35,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1600 states, 1336 states have (on average 1.2544910179640718) internal successors, (1676), 1346 states have internal predecessors, (1676), 167 states have call successors, (167), 87 states have call predecessors, (167), 96 states have return successors, (178), 166 states have call predecessors, (178), 167 states have call successors, (178) [2021-12-16 01:10:35,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1600 states to 1600 states and 2021 transitions. [2021-12-16 01:10:35,852 INFO L78 Accepts]: Start accepts. Automaton has 1600 states and 2021 transitions. Word has length 352 [2021-12-16 01:10:35,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:35,852 INFO L470 AbstractCegarLoop]: Abstraction has 1600 states and 2021 transitions. [2021-12-16 01:10:35,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.0) internal successors, (108), 5 states have internal predecessors, (108), 4 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (18), 4 states have call predecessors, (18), 4 states have call successors, (18) [2021-12-16 01:10:35,853 INFO L276 IsEmpty]: Start isEmpty. Operand 1600 states and 2021 transitions. [2021-12-16 01:10:35,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:35,855 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:35,856 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 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, 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, 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] [2021-12-16 01:10:35,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-12-16 01:10:35,856 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:35,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:35,856 INFO L85 PathProgramCache]: Analyzing trace with hash -838242006, now seen corresponding path program 1 times [2021-12-16 01:10:35,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:35,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912767210] [2021-12-16 01:10:35,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:35,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:35,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:35,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:35,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:35,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:35,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:35,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:35,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:35,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:35,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:35,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:35,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:35,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:35,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:35,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:35,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:35,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:35,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:35,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:35,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:35,955 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2021-12-16 01:10:35,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:35,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912767210] [2021-12-16 01:10:35,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912767210] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:35,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:35,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:35,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680739319] [2021-12-16 01:10:35,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:35,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:35,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:35,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:35,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:35,956 INFO L87 Difference]: Start difference. First operand 1600 states and 2021 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 01:10:36,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:36,230 INFO L93 Difference]: Finished difference Result 3962 states and 5043 transitions. [2021-12-16 01:10:36,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:36,231 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 352 [2021-12-16 01:10:36,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:36,236 INFO L225 Difference]: With dead ends: 3962 [2021-12-16 01:10:36,236 INFO L226 Difference]: Without dead ends: 2744 [2021-12-16 01:10:36,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:36,238 INFO L933 BasicCegarLoop]: 302 mSDtfsCounter, 212 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:36,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 660 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 01:10:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2744 states. [2021-12-16 01:10:36,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2744 to 1844. [2021-12-16 01:10:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1844 states, 1580 states have (on average 1.2481012658227848) internal successors, (1972), 1590 states have internal predecessors, (1972), 167 states have call successors, (167), 87 states have call predecessors, (167), 96 states have return successors, (178), 166 states have call predecessors, (178), 167 states have call successors, (178) [2021-12-16 01:10:36,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1844 states to 1844 states and 2317 transitions. [2021-12-16 01:10:36,334 INFO L78 Accepts]: Start accepts. Automaton has 1844 states and 2317 transitions. Word has length 352 [2021-12-16 01:10:36,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:36,334 INFO L470 AbstractCegarLoop]: Abstraction has 1844 states and 2317 transitions. [2021-12-16 01:10:36,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-16 01:10:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 1844 states and 2317 transitions. [2021-12-16 01:10:36,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2021-12-16 01:10:36,338 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:36,338 INFO L514 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 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, 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, 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] [2021-12-16 01:10:36,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-16 01:10:36,338 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:36,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:36,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1734722604, now seen corresponding path program 1 times [2021-12-16 01:10:36,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:36,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309931765] [2021-12-16 01:10:36,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:36,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:36,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:36,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:36,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:36,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:36,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:36,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:36,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:36,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:36,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:36,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:36,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:36,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:36,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2021-12-16 01:10:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 338 [2021-12-16 01:10:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,439 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 833 trivial. 0 not checked. [2021-12-16 01:10:36,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:36,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309931765] [2021-12-16 01:10:36,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309931765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:36,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:36,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 01:10:36,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759382609] [2021-12-16 01:10:36,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:36,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 01:10:36,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:36,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 01:10:36,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:36,442 INFO L87 Difference]: Start difference. First operand 1844 states and 2317 transitions. Second operand has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-16 01:10:36,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:36,675 INFO L93 Difference]: Finished difference Result 3699 states and 4650 transitions. [2021-12-16 01:10:36,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 01:10:36,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 352 [2021-12-16 01:10:36,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:36,680 INFO L225 Difference]: With dead ends: 3699 [2021-12-16 01:10:36,680 INFO L226 Difference]: Without dead ends: 1808 [2021-12-16 01:10:36,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-16 01:10:36,686 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 107 mSDsluCounter, 497 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 722 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:36,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 722 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:10:36,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2021-12-16 01:10:36,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1808. [2021-12-16 01:10:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1808 states, 1553 states have (on average 1.22730199613651) internal successors, (1906), 1563 states have internal predecessors, (1906), 167 states have call successors, (167), 87 states have call predecessors, (167), 87 states have return successors, (167), 157 states have call predecessors, (167), 167 states have call successors, (167) [2021-12-16 01:10:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1808 states to 1808 states and 2240 transitions. [2021-12-16 01:10:36,816 INFO L78 Accepts]: Start accepts. Automaton has 1808 states and 2240 transitions. Word has length 352 [2021-12-16 01:10:36,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:36,817 INFO L470 AbstractCegarLoop]: Abstraction has 1808 states and 2240 transitions. [2021-12-16 01:10:36,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.8) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-16 01:10:36,817 INFO L276 IsEmpty]: Start isEmpty. Operand 1808 states and 2240 transitions. [2021-12-16 01:10:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2021-12-16 01:10:36,821 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:36,821 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 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, 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, 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] [2021-12-16 01:10:36,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-16 01:10:36,821 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:36,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:36,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1091864014, now seen corresponding path program 1 times [2021-12-16 01:10:36,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:36,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604494689] [2021-12-16 01:10:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:36,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:36,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:36,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:36,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:36,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:36,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:36,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:36,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:36,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:36,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:36,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:36,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:36,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:36,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-16 01:10:36,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-16 01:10:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-16 01:10:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-16 01:10:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-16 01:10:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-16 01:10:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:36,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 293 [2021-12-16 01:10:36,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-16 01:10:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-16 01:10:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 331 [2021-12-16 01:10:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 340 [2021-12-16 01:10:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-16 01:10:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:36,935 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 910 trivial. 0 not checked. [2021-12-16 01:10:36,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:36,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604494689] [2021-12-16 01:10:36,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604494689] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:36,936 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 01:10:36,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-16 01:10:36,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338180359] [2021-12-16 01:10:36,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:36,937 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:36,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:36,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:36,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:36,937 INFO L87 Difference]: Start difference. First operand 1808 states and 2240 transitions. Second operand has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 01:10:37,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:37,118 INFO L93 Difference]: Finished difference Result 3186 states and 3972 transitions. [2021-12-16 01:10:37,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-16 01:10:37,131 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 362 [2021-12-16 01:10:37,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:37,136 INFO L225 Difference]: With dead ends: 3186 [2021-12-16 01:10:37,136 INFO L226 Difference]: Without dead ends: 1735 [2021-12-16 01:10:37,138 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-16 01:10:37,138 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 54 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:37,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 563 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 01:10:37,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2021-12-16 01:10:37,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 1735. [2021-12-16 01:10:37,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1735 states, 1480 states have (on average 1.2155405405405406) internal successors, (1799), 1490 states have internal predecessors, (1799), 167 states have call successors, (167), 87 states have call predecessors, (167), 87 states have return successors, (167), 157 states have call predecessors, (167), 167 states have call successors, (167) [2021-12-16 01:10:37,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1735 states to 1735 states and 2133 transitions. [2021-12-16 01:10:37,243 INFO L78 Accepts]: Start accepts. Automaton has 1735 states and 2133 transitions. Word has length 362 [2021-12-16 01:10:37,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:37,244 INFO L470 AbstractCegarLoop]: Abstraction has 1735 states and 2133 transitions. [2021-12-16 01:10:37,244 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.5) internal successors, (130), 3 states have internal predecessors, (130), 2 states have call successors, (22), 3 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-16 01:10:37,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1735 states and 2133 transitions. [2021-12-16 01:10:37,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2021-12-16 01:10:37,248 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:37,249 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:37,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-12-16 01:10:37,249 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:37,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:37,249 INFO L85 PathProgramCache]: Analyzing trace with hash -1080894090, now seen corresponding path program 1 times [2021-12-16 01:10:37,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:37,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29728156] [2021-12-16 01:10:37,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:37,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:37,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:37,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:37,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:37,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:37,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:37,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:37,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-16 01:10:37,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-16 01:10:37,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-16 01:10:37,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-16 01:10:37,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-16 01:10:37,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-16 01:10:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-16 01:10:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-12-16 01:10:37,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-16 01:10:37,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 313 [2021-12-16 01:10:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-12-16 01:10:37,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-16 01:10:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-16 01:10:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-16 01:10:37,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,478 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 24 proven. 24 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2021-12-16 01:10:37,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:37,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29728156] [2021-12-16 01:10:37,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29728156] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:37,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471731876] [2021-12-16 01:10:37,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:37,479 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:37,479 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:37,480 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:37,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 01:10:37,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:37,672 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-16 01:10:37,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:38,315 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 293 proven. 92 refuted. 0 times theorem prover too weak. 553 trivial. 0 not checked. [2021-12-16 01:10:38,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:39,316 INFO L134 CoverageAnalysis]: Checked inductivity of 938 backedges. 51 proven. 199 refuted. 0 times theorem prover too weak. 688 trivial. 0 not checked. [2021-12-16 01:10:39,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471731876] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:39,316 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:39,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 42 [2021-12-16 01:10:39,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418480872] [2021-12-16 01:10:39,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:39,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2021-12-16 01:10:39,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:39,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2021-12-16 01:10:39,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=1614, Unknown=0, NotChecked=0, Total=1722 [2021-12-16 01:10:39,320 INFO L87 Difference]: Start difference. First operand 1735 states and 2133 transitions. Second operand has 42 states, 41 states have (on average 7.317073170731708) internal successors, (300), 36 states have internal predecessors, (300), 12 states have call successors, (61), 10 states have call predecessors, (61), 12 states have return successors, (60), 13 states have call predecessors, (60), 11 states have call successors, (60) [2021-12-16 01:10:47,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:47,445 INFO L93 Difference]: Finished difference Result 6049 states and 7770 transitions. [2021-12-16 01:10:47,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2021-12-16 01:10:47,446 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 41 states have (on average 7.317073170731708) internal successors, (300), 36 states have internal predecessors, (300), 12 states have call successors, (61), 10 states have call predecessors, (61), 12 states have return successors, (60), 13 states have call predecessors, (60), 11 states have call successors, (60) Word has length 363 [2021-12-16 01:10:47,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:47,458 INFO L225 Difference]: With dead ends: 6049 [2021-12-16 01:10:47,458 INFO L226 Difference]: Without dead ends: 4850 [2021-12-16 01:10:47,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 776 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8328 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=1867, Invalid=25855, Unknown=0, NotChecked=0, Total=27722 [2021-12-16 01:10:47,465 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 3115 mSDsluCounter, 13386 mSDsCounter, 0 mSdLazyCounter, 11555 mSolverCounterSat, 1042 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3129 SdHoareTripleChecker+Valid, 13979 SdHoareTripleChecker+Invalid, 12597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1042 IncrementalHoareTripleChecker+Valid, 11555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:47,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3129 Valid, 13979 Invalid, 12597 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1042 Valid, 11555 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-16 01:10:47,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4850 states. [2021-12-16 01:10:47,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4850 to 2172. [2021-12-16 01:10:47,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2172 states, 1869 states have (on average 1.2049224184055645) internal successors, (2252), 1879 states have internal predecessors, (2252), 193 states have call successors, (193), 107 states have call predecessors, (193), 109 states have return successors, (197), 185 states have call predecessors, (197), 193 states have call successors, (197) [2021-12-16 01:10:47,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2642 transitions. [2021-12-16 01:10:47,618 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2642 transitions. Word has length 363 [2021-12-16 01:10:47,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:47,619 INFO L470 AbstractCegarLoop]: Abstraction has 2172 states and 2642 transitions. [2021-12-16 01:10:47,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 41 states have (on average 7.317073170731708) internal successors, (300), 36 states have internal predecessors, (300), 12 states have call successors, (61), 10 states have call predecessors, (61), 12 states have return successors, (60), 13 states have call predecessors, (60), 11 states have call successors, (60) [2021-12-16 01:10:47,620 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2642 transitions. [2021-12-16 01:10:47,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2021-12-16 01:10:47,624 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:47,624 INFO L514 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 01:10:47,644 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:47,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:47,840 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:47,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:47,840 INFO L85 PathProgramCache]: Analyzing trace with hash -902269648, now seen corresponding path program 1 times [2021-12-16 01:10:47,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:47,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12401806] [2021-12-16 01:10:47,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:47,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:47,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:47,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 01:10:47,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 01:10:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-16 01:10:47,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:47,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:47,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 01:10:47,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:47,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:47,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:47,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-16 01:10:47,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:47,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-16 01:10:47,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-16 01:10:47,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-16 01:10:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-16 01:10:47,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-16 01:10:47,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-16 01:10:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-16 01:10:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-16 01:10:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2021-12-16 01:10:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-16 01:10:47,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-12-16 01:10:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-16 01:10:47,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2021-12-16 01:10:47,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2021-12-16 01:10:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2021-12-16 01:10:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:47,926 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 9 proven. 136 refuted. 0 times theorem prover too weak. 799 trivial. 0 not checked. [2021-12-16 01:10:47,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:47,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12401806] [2021-12-16 01:10:47,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12401806] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:47,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1839795078] [2021-12-16 01:10:47,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:47,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:47,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:47,928 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:47,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 01:10:48,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:48,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 1309 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 01:10:48,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:48,464 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2021-12-16 01:10:48,464 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 01:10:48,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1839795078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 01:10:48,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 01:10:48,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 01:10:48,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995480175] [2021-12-16 01:10:48,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 01:10:48,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 01:10:48,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:48,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 01:10:48,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 01:10:48,466 INFO L87 Difference]: Start difference. First operand 2172 states and 2642 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-16 01:10:48,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 01:10:48,593 INFO L93 Difference]: Finished difference Result 3878 states and 4748 transitions. [2021-12-16 01:10:48,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 01:10:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) Word has length 366 [2021-12-16 01:10:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 01:10:48,614 INFO L225 Difference]: With dead ends: 3878 [2021-12-16 01:10:48,614 INFO L226 Difference]: Without dead ends: 1707 [2021-12-16 01:10:48,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 427 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 01:10:48,617 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 28 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 01:10:48,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 667 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 01:10:48,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1707 states. [2021-12-16 01:10:48,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1707 to 1707. [2021-12-16 01:10:48,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1707 states, 1459 states have (on average 1.2152159013022619) internal successors, (1773), 1467 states have internal predecessors, (1773), 163 states have call successors, (163), 84 states have call predecessors, (163), 84 states have return successors, (163), 155 states have call predecessors, (163), 163 states have call successors, (163) [2021-12-16 01:10:48,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1707 states to 1707 states and 2099 transitions. [2021-12-16 01:10:48,699 INFO L78 Accepts]: Start accepts. Automaton has 1707 states and 2099 transitions. Word has length 366 [2021-12-16 01:10:48,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 01:10:48,699 INFO L470 AbstractCegarLoop]: Abstraction has 1707 states and 2099 transitions. [2021-12-16 01:10:48,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 1 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-16 01:10:48,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1707 states and 2099 transitions. [2021-12-16 01:10:48,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2021-12-16 01:10:48,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 01:10:48,703 INFO L514 BasicCegarLoop]: trace histogram [14, 14, 12, 12, 9, 8, 7, 7, 7, 6, 6, 6, 6, 5, 5, 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, 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, 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] [2021-12-16 01:10:48,721 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-16 01:10:48,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:48,921 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 01:10:48,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 01:10:48,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1162142773, now seen corresponding path program 1 times [2021-12-16 01:10:48,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 01:10:48,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58350930] [2021-12-16 01:10:48,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:48,921 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 01:10:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-16 01:10:49,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 01:10:49,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-16 01:10:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-16 01:10:49,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 01:10:49,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-16 01:10:49,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-16 01:10:49,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-16 01:10:49,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 01:10:49,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-16 01:10:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-16 01:10:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-16 01:10:49,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-16 01:10:49,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-16 01:10:49,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-16 01:10:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-16 01:10:49,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-16 01:10:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-16 01:10:49,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-16 01:10:49,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-16 01:10:49,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-12-16 01:10:49,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 266 [2021-12-16 01:10:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 276 [2021-12-16 01:10:49,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-12-16 01:10:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-16 01:10:49,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-16 01:10:49,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-16 01:10:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2021-12-16 01:10:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-12-16 01:10:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2021-12-16 01:10:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 359 [2021-12-16 01:10:49,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,163 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 19 proven. 14 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2021-12-16 01:10:49,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 01:10:49,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58350930] [2021-12-16 01:10:49,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58350930] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 01:10:49,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1933123443] [2021-12-16 01:10:49,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 01:10:49,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 01:10:49,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 01:10:49,165 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-16 01:10:49,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-16 01:10:49,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 01:10:49,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 1334 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-16 01:10:49,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 01:10:50,636 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 477 proven. 210 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-12-16 01:10:50,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 01:10:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 999 backedges. 107 proven. 194 refuted. 0 times theorem prover too weak. 698 trivial. 0 not checked. [2021-12-16 01:10:51,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1933123443] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 01:10:51,940 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 01:10:51,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 26, 21] total 52 [2021-12-16 01:10:51,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966262670] [2021-12-16 01:10:51,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 01:10:51,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-16 01:10:51,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 01:10:51,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-16 01:10:51,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2446, Unknown=0, NotChecked=0, Total=2652 [2021-12-16 01:10:51,942 INFO L87 Difference]: Start difference. First operand 1707 states and 2099 transitions. Second operand has 52 states, 52 states have (on average 7.365384615384615) internal successors, (383), 45 states have internal predecessors, (383), 17 states have call successors, (64), 13 states have call predecessors, (64), 18 states have return successors, (67), 21 states have call predecessors, (67), 17 states have call successors, (67)