./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/systemc/kundu2.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c 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/systemc/kundu2.cil.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 87760fc84dfa44e1b5109b35af0fae7e5f68f814afbb1ba90e7b46e4e9e3b4bf --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:30:18,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:30:18,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:30:18,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:30:18,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:30:18,034 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:30:18,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:30:18,041 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:30:18,043 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:30:18,045 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:30:18,046 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:30:18,048 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:30:18,048 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:30:18,049 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:30:18,050 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:30:18,051 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:30:18,052 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:30:18,053 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:30:18,055 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:30:18,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:30:18,062 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:30:18,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:30:18,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:30:18,063 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:30:18,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:30:18,067 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:30:18,067 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:30:18,067 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:30:18,068 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:30:18,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:30:18,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:30:18,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:30:18,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:30:18,070 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:30:18,071 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:30:18,072 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:30:18,073 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:30:18,073 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:30:18,073 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:30:18,073 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:30:18,074 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:30:18,075 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:30:18,076 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:30:18,098 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:30:18,099 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:30:18,099 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:30:18,099 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:30:18,100 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:30:18,100 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:30:18,100 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:30:18,100 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:30:18,101 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:30:18,101 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:30:18,101 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:30:18,101 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:30:18,102 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:30:18,102 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:30:18,102 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:30:18,102 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:30:18,102 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:30:18,102 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:30:18,102 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:30:18,103 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:30:18,103 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:30:18,103 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:30:18,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:30:18,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:30:18,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:30:18,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:30:18,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:30:18,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:30:18,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:30:18,104 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:30:18,104 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:30:18,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:30:18,105 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:30:18,105 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 87760fc84dfa44e1b5109b35af0fae7e5f68f814afbb1ba90e7b46e4e9e3b4bf [2022-07-12 06:30:18,272 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:30:18,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:30:18,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:30:18,292 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:30:18,292 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:30:18,293 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/systemc/kundu2.cil.c [2022-07-12 06:30:18,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aada58d12/d240fd8a232a4356ae1871ee2a4f5a44/FLAG01cfa1003 [2022-07-12 06:30:18,757 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:30:18,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/systemc/kundu2.cil.c [2022-07-12 06:30:18,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aada58d12/d240fd8a232a4356ae1871ee2a4f5a44/FLAG01cfa1003 [2022-07-12 06:30:18,777 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aada58d12/d240fd8a232a4356ae1871ee2a4f5a44 [2022-07-12 06:30:18,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:30:18,780 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:30:18,782 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:30:18,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:30:18,784 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:30:18,785 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:30:18" (1/1) ... [2022-07-12 06:30:18,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@564c62df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:18, skipping insertion in model container [2022-07-12 06:30:18,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:30:18" (1/1) ... [2022-07-12 06:30:18,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:30:18,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:30:18,993 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/systemc/kundu2.cil.c[636,649] [2022-07-12 06:30:19,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:30:19,070 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:30:19,086 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/systemc/kundu2.cil.c[636,649] [2022-07-12 06:30:19,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:30:19,119 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:30:19,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19 WrapperNode [2022-07-12 06:30:19,120 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:30:19,121 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:30:19,121 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:30:19,121 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:30:19,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,150 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,169 INFO L137 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 17, calls inlined = 17, statements flattened = 310 [2022-07-12 06:30:19,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:30:19,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:30:19,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:30:19,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:30:19,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,179 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,207 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:30:19,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:30:19,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:30:19,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:30:19,234 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (1/1) ... [2022-07-12 06:30:19,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:30:19,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:30:19,262 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:30:19,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:30:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:30:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure write_data [2022-07-12 06:30:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure write_data [2022-07-12 06:30:19,295 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 06:30:19,295 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 06:30:19,296 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-07-12 06:30:19,296 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-07-12 06:30:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-07-12 06:30:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-07-12 06:30:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-07-12 06:30:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-07-12 06:30:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-07-12 06:30:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-07-12 06:30:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:30:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-07-12 06:30:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-07-12 06:30:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:30:19,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:30:19,428 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:30:19,444 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:30:19,726 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:30:19,730 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:30:19,731 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 06:30:19,733 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:30:19 BoogieIcfgContainer [2022-07-12 06:30:19,733 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:30:19,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:30:19,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:30:19,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:30:19,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:30:18" (1/3) ... [2022-07-12 06:30:19,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42563ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:30:19, skipping insertion in model container [2022-07-12 06:30:19,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:30:19" (2/3) ... [2022-07-12 06:30:19,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42563ab0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:30:19, skipping insertion in model container [2022-07-12 06:30:19,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:30:19" (3/3) ... [2022-07-12 06:30:19,739 INFO L111 eAbstractionObserver]: Analyzing ICFG kundu2.cil.c [2022-07-12 06:30:19,748 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:30:19,749 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:30:19,798 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:30:19,802 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@597e9d5d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@e10198b [2022-07-12 06:30:19,802 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:30:19,809 INFO L276 IsEmpty]: Start isEmpty. Operand has 134 states, 107 states have (on average 1.514018691588785) internal successors, (162), 111 states have internal predecessors, (162), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-07-12 06:30:19,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 06:30:19,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:19,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:19,821 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:19,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:19,827 INFO L85 PathProgramCache]: Analyzing trace with hash 734266899, now seen corresponding path program 1 times [2022-07-12 06:30:19,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:19,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85216266] [2022-07-12 06:30:19,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:19,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:19,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:20,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:20,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:30:20,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 06:30:20,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:20,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:20,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85216266] [2022-07-12 06:30:20,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85216266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:20,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:20,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 06:30:20,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450789699] [2022-07-12 06:30:20,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:20,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 06:30:20,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:20,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 06:30:20,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-12 06:30:20,093 INFO L87 Difference]: Start difference. First operand has 134 states, 107 states have (on average 1.514018691588785) internal successors, (162), 111 states have internal predecessors, (162), 18 states have call successors, (18), 7 states have call predecessors, (18), 7 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:20,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:20,240 INFO L93 Difference]: Finished difference Result 277 states and 417 transitions. [2022-07-12 06:30:20,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 06:30:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2022-07-12 06:30:20,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:20,248 INFO L225 Difference]: With dead ends: 277 [2022-07-12 06:30:20,248 INFO L226 Difference]: Without dead ends: 145 [2022-07-12 06:30:20,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:30:20,253 INFO L413 NwaCegarLoop]: 206 mSDtfsCounter, 219 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:20,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 308 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:30:20,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-12 06:30:20,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 127. [2022-07-12 06:30:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 102 states have (on average 1.4411764705882353) internal successors, (147), 105 states have internal predecessors, (147), 18 states have call successors, (18), 7 states have call predecessors, (18), 6 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-07-12 06:30:20,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 180 transitions. [2022-07-12 06:30:20,283 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 180 transitions. Word has length 59 [2022-07-12 06:30:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:20,284 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 180 transitions. [2022-07-12 06:30:20,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 180 transitions. [2022-07-12 06:30:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 06:30:20,286 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:20,286 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:20,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 06:30:20,292 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:20,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:20,292 INFO L85 PathProgramCache]: Analyzing trace with hash -804073131, now seen corresponding path program 1 times [2022-07-12 06:30:20,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:20,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642069630] [2022-07-12 06:30:20,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:20,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:20,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:30:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 06:30:20,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:20,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:20,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642069630] [2022-07-12 06:30:20,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642069630] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:20,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:20,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:30:20,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723160969] [2022-07-12 06:30:20,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:20,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:30:20,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:20,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:30:20,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:30:20,382 INFO L87 Difference]: Start difference. First operand 127 states and 180 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:20,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:20,642 INFO L93 Difference]: Finished difference Result 392 states and 563 transitions. [2022-07-12 06:30:20,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:30:20,643 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2022-07-12 06:30:20,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:20,646 INFO L225 Difference]: With dead ends: 392 [2022-07-12 06:30:20,646 INFO L226 Difference]: Without dead ends: 276 [2022-07-12 06:30:20,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:30:20,648 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 385 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 834 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:20,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 834 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:30:20,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-07-12 06:30:20,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 234. [2022-07-12 06:30:20,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 192 states have (on average 1.4322916666666667) internal successors, (275), 196 states have internal predecessors, (275), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 06:30:20,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 330 transitions. [2022-07-12 06:30:20,678 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 330 transitions. Word has length 59 [2022-07-12 06:30:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:20,678 INFO L495 AbstractCegarLoop]: Abstraction has 234 states and 330 transitions. [2022-07-12 06:30:20,679 INFO L496 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, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:20,679 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 330 transitions. [2022-07-12 06:30:20,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 06:30:20,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:20,681 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:20,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 06:30:20,681 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:20,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:20,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1094457174, now seen corresponding path program 1 times [2022-07-12 06:30:20,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:20,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432288746] [2022-07-12 06:30:20,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:20,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:20,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:30:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 06:30:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:20,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:20,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:20,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432288746] [2022-07-12 06:30:20,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432288746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:20,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:20,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:30:20,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177520390] [2022-07-12 06:30:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:20,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:30:20,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:30:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:30:20,823 INFO L87 Difference]: Start difference. First operand 234 states and 330 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:21,027 INFO L93 Difference]: Finished difference Result 529 states and 766 transitions. [2022-07-12 06:30:21,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:30:21,028 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2022-07-12 06:30:21,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:21,030 INFO L225 Difference]: With dead ends: 529 [2022-07-12 06:30:21,030 INFO L226 Difference]: Without dead ends: 306 [2022-07-12 06:30:21,032 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:30:21,033 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 183 mSDsluCounter, 658 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:21,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [183 Valid, 857 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:30:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2022-07-12 06:30:21,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 237. [2022-07-12 06:30:21,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 195 states have (on average 1.4205128205128206) internal successors, (277), 199 states have internal predecessors, (277), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 06:30:21,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 332 transitions. [2022-07-12 06:30:21,060 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 332 transitions. Word has length 59 [2022-07-12 06:30:21,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:21,061 INFO L495 AbstractCegarLoop]: Abstraction has 237 states and 332 transitions. [2022-07-12 06:30:21,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:21,061 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 332 transitions. [2022-07-12 06:30:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 06:30:21,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:21,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:21,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 06:30:21,063 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:21,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash -750909992, now seen corresponding path program 1 times [2022-07-12 06:30:21,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:21,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138567435] [2022-07-12 06:30:21,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:21,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:21,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:21,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:21,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:21,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:30:21,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 06:30:21,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:21,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:21,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138567435] [2022-07-12 06:30:21,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138567435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:21,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:21,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:30:21,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708053051] [2022-07-12 06:30:21,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:21,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:30:21,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:21,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:30:21,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:30:21,195 INFO L87 Difference]: Start difference. First operand 237 states and 332 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:21,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:21,384 INFO L93 Difference]: Finished difference Result 549 states and 797 transitions. [2022-07-12 06:30:21,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:30:21,385 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2022-07-12 06:30:21,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:21,387 INFO L225 Difference]: With dead ends: 549 [2022-07-12 06:30:21,403 INFO L226 Difference]: Without dead ends: 323 [2022-07-12 06:30:21,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:30:21,405 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 196 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:21,405 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 763 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:30:21,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2022-07-12 06:30:21,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2022-07-12 06:30:21,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 201 states have (on average 1.407960199004975) internal successors, (283), 205 states have internal predecessors, (283), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-07-12 06:30:21,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 338 transitions. [2022-07-12 06:30:21,439 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 338 transitions. Word has length 59 [2022-07-12 06:30:21,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:21,440 INFO L495 AbstractCegarLoop]: Abstraction has 243 states and 338 transitions. [2022-07-12 06:30:21,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:21,440 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 338 transitions. [2022-07-12 06:30:21,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-07-12 06:30:21,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:21,442 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:21,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 06:30:21,442 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:21,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:21,443 INFO L85 PathProgramCache]: Analyzing trace with hash -823296550, now seen corresponding path program 1 times [2022-07-12 06:30:21,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:21,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266186576] [2022-07-12 06:30:21,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:21,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:21,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:21,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 06:30:21,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 06:30:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:21,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:21,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:21,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266186576] [2022-07-12 06:30:21,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266186576] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:21,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:21,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:30:21,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250902428] [2022-07-12 06:30:21,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:21,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:30:21,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:21,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:30:21,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:30:21,527 INFO L87 Difference]: Start difference. First operand 243 states and 338 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:22,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:22,074 INFO L93 Difference]: Finished difference Result 1005 states and 1437 transitions. [2022-07-12 06:30:22,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:30:22,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 59 [2022-07-12 06:30:22,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:22,079 INFO L225 Difference]: With dead ends: 1005 [2022-07-12 06:30:22,079 INFO L226 Difference]: Without dead ends: 773 [2022-07-12 06:30:22,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:30:22,080 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 767 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:22,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 1014 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:30:22,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-07-12 06:30:22,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 455. [2022-07-12 06:30:22,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 379 states have (on average 1.3984168865435356) internal successors, (530), 385 states have internal predecessors, (530), 51 states have call successors, (51), 25 states have call predecessors, (51), 24 states have return successors, (51), 45 states have call predecessors, (51), 48 states have call successors, (51) [2022-07-12 06:30:22,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 632 transitions. [2022-07-12 06:30:22,118 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 632 transitions. Word has length 59 [2022-07-12 06:30:22,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:22,118 INFO L495 AbstractCegarLoop]: Abstraction has 455 states and 632 transitions. [2022-07-12 06:30:22,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:22,119 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 632 transitions. [2022-07-12 06:30:22,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-12 06:30:22,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:22,120 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:22,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 06:30:22,121 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:22,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:22,121 INFO L85 PathProgramCache]: Analyzing trace with hash 225843183, now seen corresponding path program 1 times [2022-07-12 06:30:22,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:22,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851768418] [2022-07-12 06:30:22,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:22,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:22,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:22,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:22,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:22,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:22,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:22,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851768418] [2022-07-12 06:30:22,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851768418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:22,188 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:22,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:30:22,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393721038] [2022-07-12 06:30:22,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:22,189 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:30:22,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:22,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:30:22,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:30:22,190 INFO L87 Difference]: Start difference. First operand 455 states and 632 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:22,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:22,368 INFO L93 Difference]: Finished difference Result 1000 states and 1442 transitions. [2022-07-12 06:30:22,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:30:22,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 60 [2022-07-12 06:30:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:22,370 INFO L225 Difference]: With dead ends: 1000 [2022-07-12 06:30:22,370 INFO L226 Difference]: Without dead ends: 556 [2022-07-12 06:30:22,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:30:22,372 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 75 mSDsluCounter, 565 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:22,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 747 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:30:22,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 556 states. [2022-07-12 06:30:22,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 556 to 467. [2022-07-12 06:30:22,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 391 states have (on average 1.3861892583120206) internal successors, (542), 397 states have internal predecessors, (542), 51 states have call successors, (51), 25 states have call predecessors, (51), 24 states have return successors, (51), 45 states have call predecessors, (51), 48 states have call successors, (51) [2022-07-12 06:30:22,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 644 transitions. [2022-07-12 06:30:22,401 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 644 transitions. Word has length 60 [2022-07-12 06:30:22,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:22,401 INFO L495 AbstractCegarLoop]: Abstraction has 467 states and 644 transitions. [2022-07-12 06:30:22,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-07-12 06:30:22,402 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 644 transitions. [2022-07-12 06:30:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-12 06:30:22,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:22,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:30:22,402 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:22,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:22,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2145896079, now seen corresponding path program 1 times [2022-07-12 06:30:22,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:22,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757698380] [2022-07-12 06:30:22,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:22,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:22,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:22,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:22,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:22,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:22,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:22,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:22,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757698380] [2022-07-12 06:30:22,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757698380] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:22,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:22,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:30:22,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394189851] [2022-07-12 06:30:22,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:22,440 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:30:22,440 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:30:22,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:30:22,440 INFO L87 Difference]: Start difference. First operand 467 states and 644 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 06:30:22,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:22,666 INFO L93 Difference]: Finished difference Result 1472 states and 2042 transitions. [2022-07-12 06:30:22,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 06:30:22,666 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 60 [2022-07-12 06:30:22,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:22,670 INFO L225 Difference]: With dead ends: 1472 [2022-07-12 06:30:22,670 INFO L226 Difference]: Without dead ends: 1017 [2022-07-12 06:30:22,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:30:22,672 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 249 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:22,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 800 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:30:22,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2022-07-12 06:30:22,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 871. [2022-07-12 06:30:22,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 871 states, 731 states have (on average 1.377564979480164) internal successors, (1007), 745 states have internal predecessors, (1007), 91 states have call successors, (91), 49 states have call predecessors, (91), 48 states have return successors, (93), 77 states have call predecessors, (93), 88 states have call successors, (93) [2022-07-12 06:30:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1191 transitions. [2022-07-12 06:30:22,719 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1191 transitions. Word has length 60 [2022-07-12 06:30:22,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:22,719 INFO L495 AbstractCegarLoop]: Abstraction has 871 states and 1191 transitions. [2022-07-12 06:30:22,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-07-12 06:30:22,720 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1191 transitions. [2022-07-12 06:30:22,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 06:30:22,720 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:22,721 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 06:30:22,721 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:30:22,721 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:22,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:22,721 INFO L85 PathProgramCache]: Analyzing trace with hash 370475399, now seen corresponding path program 1 times [2022-07-12 06:30:22,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:22,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544869664] [2022-07-12 06:30:22,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:22,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:22,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:22,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:22,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:22,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:22,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,807 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:22,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:22,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544869664] [2022-07-12 06:30:22,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544869664] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:30:22,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486851452] [2022-07-12 06:30:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:22,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:30:22,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:30:22,809 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:30:22,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:30:22,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:22,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-12 06:30:22,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:30:23,060 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:23,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:30:23,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:23,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486851452] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 06:30:23,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 06:30:23,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 8 [2022-07-12 06:30:23,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601822310] [2022-07-12 06:30:23,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:23,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:30:23,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:23,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:30:23,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:30:23,130 INFO L87 Difference]: Start difference. First operand 871 states and 1191 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:30:23,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:23,335 INFO L93 Difference]: Finished difference Result 2417 states and 3325 transitions. [2022-07-12 06:30:23,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 06:30:23,336 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 71 [2022-07-12 06:30:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:23,343 INFO L225 Difference]: With dead ends: 2417 [2022-07-12 06:30:23,343 INFO L226 Difference]: Without dead ends: 1656 [2022-07-12 06:30:23,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 149 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-12 06:30:23,346 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 289 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:23,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 1326 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:30:23,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1656 states. [2022-07-12 06:30:23,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1656 to 1627. [2022-07-12 06:30:23,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1627 states, 1371 states have (on average 1.37490882567469) internal successors, (1885), 1394 states have internal predecessors, (1885), 165 states have call successors, (165), 91 states have call predecessors, (165), 90 states have return successors, (172), 142 states have call predecessors, (172), 162 states have call successors, (172) [2022-07-12 06:30:23,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1627 states to 1627 states and 2222 transitions. [2022-07-12 06:30:23,452 INFO L78 Accepts]: Start accepts. Automaton has 1627 states and 2222 transitions. Word has length 71 [2022-07-12 06:30:23,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:23,452 INFO L495 AbstractCegarLoop]: Abstraction has 1627 states and 2222 transitions. [2022-07-12 06:30:23,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 5 states have internal predecessors, (57), 3 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:30:23,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1627 states and 2222 transitions. [2022-07-12 06:30:23,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 06:30:23,453 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:23,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:23,472 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 06:30:23,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:30:23,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:23,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:23,668 INFO L85 PathProgramCache]: Analyzing trace with hash -153594449, now seen corresponding path program 1 times [2022-07-12 06:30:23,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:23,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816219119] [2022-07-12 06:30:23,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:23,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:23,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:23,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:23,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:23,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:23,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:23,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:23,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:23,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:23,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:23,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:23,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:23,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1816219119] [2022-07-12 06:30:23,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1816219119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:23,718 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:23,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:30:23,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488547716] [2022-07-12 06:30:23,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:23,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:30:23,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:23,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:30:23,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:30:23,720 INFO L87 Difference]: Start difference. First operand 1627 states and 2222 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 06:30:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:24,189 INFO L93 Difference]: Finished difference Result 5161 states and 7145 transitions. [2022-07-12 06:30:24,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:30:24,190 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2022-07-12 06:30:24,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:24,203 INFO L225 Difference]: With dead ends: 5161 [2022-07-12 06:30:24,203 INFO L226 Difference]: Without dead ends: 3546 [2022-07-12 06:30:24,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:30:24,209 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 379 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 385 SdHoareTripleChecker+Valid, 742 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:24,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [385 Valid, 742 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:30:24,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2022-07-12 06:30:24,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 3226. [2022-07-12 06:30:24,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3226 states, 2749 states have (on average 1.353946889778101) internal successors, (3722), 2790 states have internal predecessors, (3722), 292 states have call successors, (292), 170 states have call predecessors, (292), 184 states have return successors, (401), 267 states have call predecessors, (401), 289 states have call successors, (401) [2022-07-12 06:30:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3226 states to 3226 states and 4415 transitions. [2022-07-12 06:30:24,398 INFO L78 Accepts]: Start accepts. Automaton has 3226 states and 4415 transitions. Word has length 73 [2022-07-12 06:30:24,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:24,398 INFO L495 AbstractCegarLoop]: Abstraction has 3226 states and 4415 transitions. [2022-07-12 06:30:24,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 4 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 06:30:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3226 states and 4415 transitions. [2022-07-12 06:30:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-12 06:30:24,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:24,400 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:24,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:30:24,400 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:24,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1839774287, now seen corresponding path program 1 times [2022-07-12 06:30:24,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:24,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2112616642] [2022-07-12 06:30:24,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:24,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:24,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2112616642] [2022-07-12 06:30:24,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2112616642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:24,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:24,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:30:24,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617695718] [2022-07-12 06:30:24,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:24,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:30:24,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:24,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:30:24,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:30:24,429 INFO L87 Difference]: Start difference. First operand 3226 states and 4415 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 06:30:24,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:24,716 INFO L93 Difference]: Finished difference Result 6801 states and 9339 transitions. [2022-07-12 06:30:24,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:30:24,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 73 [2022-07-12 06:30:24,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:24,730 INFO L225 Difference]: With dead ends: 6801 [2022-07-12 06:30:24,730 INFO L226 Difference]: Without dead ends: 3586 [2022-07-12 06:30:24,738 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:30:24,739 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 304 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:24,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 336 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:30:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3586 states. [2022-07-12 06:30:24,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3586 to 3221. [2022-07-12 06:30:24,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3221 states, 2747 states have (on average 1.3534765198398253) internal successors, (3718), 2787 states have internal predecessors, (3718), 289 states have call successors, (289), 170 states have call predecessors, (289), 184 states have return successors, (397), 264 states have call predecessors, (397), 286 states have call successors, (397) [2022-07-12 06:30:24,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3221 states to 3221 states and 4404 transitions. [2022-07-12 06:30:24,931 INFO L78 Accepts]: Start accepts. Automaton has 3221 states and 4404 transitions. Word has length 73 [2022-07-12 06:30:24,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:24,932 INFO L495 AbstractCegarLoop]: Abstraction has 3221 states and 4404 transitions. [2022-07-12 06:30:24,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 06:30:24,932 INFO L276 IsEmpty]: Start isEmpty. Operand 3221 states and 4404 transitions. [2022-07-12 06:30:24,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 06:30:24,933 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:24,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:24,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 06:30:24,933 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:24,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:24,934 INFO L85 PathProgramCache]: Analyzing trace with hash 1321482580, now seen corresponding path program 1 times [2022-07-12 06:30:24,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:24,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535415779] [2022-07-12 06:30:24,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:24,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:24,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:24,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:24,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:24,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:24,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:24,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:24,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:24,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535415779] [2022-07-12 06:30:24,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535415779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:24,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:24,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:30:24,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752619257] [2022-07-12 06:30:24,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:24,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:30:24,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:24,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:30:24,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:30:24,975 INFO L87 Difference]: Start difference. First operand 3221 states and 4404 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:30:25,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:25,463 INFO L93 Difference]: Finished difference Result 9335 states and 12874 transitions. [2022-07-12 06:30:25,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:30:25,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2022-07-12 06:30:25,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:25,486 INFO L225 Difference]: With dead ends: 9335 [2022-07-12 06:30:25,487 INFO L226 Difference]: Without dead ends: 6125 [2022-07-12 06:30:25,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:30:25,498 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 375 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:25,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 497 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:30:25,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6125 states. [2022-07-12 06:30:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6125 to 5069. [2022-07-12 06:30:25,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5069 states, 4286 states have (on average 1.3201119925338312) internal successors, (5658), 4350 states have internal predecessors, (5658), 475 states have call successors, (475), 283 states have call predecessors, (475), 307 states have return successors, (665), 436 states have call predecessors, (665), 472 states have call successors, (665) [2022-07-12 06:30:25,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5069 states to 5069 states and 6798 transitions. [2022-07-12 06:30:25,835 INFO L78 Accepts]: Start accepts. Automaton has 5069 states and 6798 transitions. Word has length 74 [2022-07-12 06:30:25,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:25,836 INFO L495 AbstractCegarLoop]: Abstraction has 5069 states and 6798 transitions. [2022-07-12 06:30:25,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:30:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 5069 states and 6798 transitions. [2022-07-12 06:30:25,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 06:30:25,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:25,837 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:25,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:30:25,837 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:25,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:25,838 INFO L85 PathProgramCache]: Analyzing trace with hash -728024876, now seen corresponding path program 1 times [2022-07-12 06:30:25,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:25,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664935755] [2022-07-12 06:30:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:25,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:25,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:25,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:25,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:25,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:25,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:25,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:25,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:25,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:25,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:25,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:25,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:25,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664935755] [2022-07-12 06:30:25,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664935755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:25,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:25,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 06:30:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333145748] [2022-07-12 06:30:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:25,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:30:25,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:25,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:30:25,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:30:25,895 INFO L87 Difference]: Start difference. First operand 5069 states and 6798 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:30:27,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:27,196 INFO L93 Difference]: Finished difference Result 15120 states and 20874 transitions. [2022-07-12 06:30:27,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-12 06:30:27,197 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 75 [2022-07-12 06:30:27,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:27,254 INFO L225 Difference]: With dead ends: 15120 [2022-07-12 06:30:27,255 INFO L226 Difference]: Without dead ends: 10237 [2022-07-12 06:30:27,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-07-12 06:30:27,273 INFO L413 NwaCegarLoop]: 327 mSDtfsCounter, 946 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:27,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 1114 Invalid, 918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 740 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 06:30:27,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10237 states. [2022-07-12 06:30:27,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10237 to 7443. [2022-07-12 06:30:27,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7443 states, 6308 states have (on average 1.3202282815472417) internal successors, (8328), 6388 states have internal predecessors, (8328), 687 states have call successors, (687), 411 states have call predecessors, (687), 447 states have return successors, (971), 644 states have call predecessors, (971), 684 states have call successors, (971) [2022-07-12 06:30:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7443 states to 7443 states and 9986 transitions. [2022-07-12 06:30:27,782 INFO L78 Accepts]: Start accepts. Automaton has 7443 states and 9986 transitions. Word has length 75 [2022-07-12 06:30:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:27,783 INFO L495 AbstractCegarLoop]: Abstraction has 7443 states and 9986 transitions. [2022-07-12 06:30:27,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 2 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2022-07-12 06:30:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand 7443 states and 9986 transitions. [2022-07-12 06:30:27,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-12 06:30:27,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:27,784 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 06:30:27,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:30:27,785 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:27,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:27,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1139883952, now seen corresponding path program 1 times [2022-07-12 06:30:27,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:27,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254950609] [2022-07-12 06:30:27,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:27,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:27,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:27,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:27,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:27,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:27,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:27,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 06:30:27,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:27,820 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 06:30:27,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:27,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254950609] [2022-07-12 06:30:27,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254950609] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:30:27,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805103319] [2022-07-12 06:30:27,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:27,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:30:27,821 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:30:27,821 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:30:27,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 06:30:27,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:27,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 06:30:27,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:30:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:27,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:30:27,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805103319] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:27,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:30:27,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2022-07-12 06:30:27,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939239777] [2022-07-12 06:30:27,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:27,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:30:27,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:27,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:30:27,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:30:27,925 INFO L87 Difference]: Start difference. First operand 7443 states and 9986 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 06:30:28,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:28,617 INFO L93 Difference]: Finished difference Result 19570 states and 26516 transitions. [2022-07-12 06:30:28,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:30:28,617 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2022-07-12 06:30:28,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:28,664 INFO L225 Difference]: With dead ends: 19570 [2022-07-12 06:30:28,665 INFO L226 Difference]: Without dead ends: 12139 [2022-07-12 06:30:28,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:30:28,689 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 128 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 478 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:28,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 478 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:30:28,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12139 states. [2022-07-12 06:30:29,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12139 to 11576. [2022-07-12 06:30:29,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11576 states, 9763 states have (on average 1.3097408583427226) internal successors, (12787), 9893 states have internal predecessors, (12787), 1097 states have call successors, (1097), 657 states have call predecessors, (1097), 715 states have return successors, (1717), 1027 states have call predecessors, (1717), 1094 states have call successors, (1717) [2022-07-12 06:30:29,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11576 states to 11576 states and 15601 transitions. [2022-07-12 06:30:29,534 INFO L78 Accepts]: Start accepts. Automaton has 11576 states and 15601 transitions. Word has length 79 [2022-07-12 06:30:29,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:29,535 INFO L495 AbstractCegarLoop]: Abstraction has 11576 states and 15601 transitions. [2022-07-12 06:30:29,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (7), 3 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 06:30:29,536 INFO L276 IsEmpty]: Start isEmpty. Operand 11576 states and 15601 transitions. [2022-07-12 06:30:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 06:30:29,539 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:29,539 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:29,582 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 06:30:29,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 06:30:29,756 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:29,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:29,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1579582129, now seen corresponding path program 1 times [2022-07-12 06:30:29,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:29,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397885892] [2022-07-12 06:30:29,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:29,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:29,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:29,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:29,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:29,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:29,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:30:29,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:29,830 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:30:29,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:29,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397885892] [2022-07-12 06:30:29,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397885892] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:29,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:29,831 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:30:29,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839157448] [2022-07-12 06:30:29,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:29,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:30:29,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:29,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:30:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:30:29,834 INFO L87 Difference]: Start difference. First operand 11576 states and 15601 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:30:31,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:31,420 INFO L93 Difference]: Finished difference Result 29101 states and 39401 transitions. [2022-07-12 06:30:31,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 06:30:31,421 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 84 [2022-07-12 06:30:31,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:31,476 INFO L225 Difference]: With dead ends: 29101 [2022-07-12 06:30:31,476 INFO L226 Difference]: Without dead ends: 19000 [2022-07-12 06:30:31,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:30:31,504 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 800 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:31,504 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [832 Valid, 1216 Invalid, 794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 06:30:31,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19000 states. [2022-07-12 06:30:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19000 to 15958. [2022-07-12 06:30:32,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15958 states, 13549 states have (on average 1.318916525204812) internal successors, (17870), 13759 states have internal predecessors, (17870), 1425 states have call successors, (1425), 853 states have call predecessors, (1425), 983 states have return successors, (2443), 1347 states have call predecessors, (2443), 1422 states have call successors, (2443) [2022-07-12 06:30:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15958 states to 15958 states and 21738 transitions. [2022-07-12 06:30:32,555 INFO L78 Accepts]: Start accepts. Automaton has 15958 states and 21738 transitions. Word has length 84 [2022-07-12 06:30:32,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:32,556 INFO L495 AbstractCegarLoop]: Abstraction has 15958 states and 21738 transitions. [2022-07-12 06:30:32,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:30:32,556 INFO L276 IsEmpty]: Start isEmpty. Operand 15958 states and 21738 transitions. [2022-07-12 06:30:32,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 06:30:32,559 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:32,559 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:32,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:30:32,559 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:32,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:32,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1643055201, now seen corresponding path program 1 times [2022-07-12 06:30:32,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:32,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071810384] [2022-07-12 06:30:32,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:32,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:32,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:32,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:32,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:32,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:32,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:32,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:32,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:32,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:32,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:30:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:32,635 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 06:30:32,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:32,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071810384] [2022-07-12 06:30:32,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071810384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:32,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:32,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 06:30:32,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635923914] [2022-07-12 06:30:32,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:32,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:30:32,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:32,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:30:32,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:30:32,637 INFO L87 Difference]: Start difference. First operand 15958 states and 21738 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:30:35,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:35,520 INFO L93 Difference]: Finished difference Result 48940 states and 68972 transitions. [2022-07-12 06:30:35,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 06:30:35,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-07-12 06:30:35,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:35,659 INFO L225 Difference]: With dead ends: 48940 [2022-07-12 06:30:35,659 INFO L226 Difference]: Without dead ends: 34457 [2022-07-12 06:30:35,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:30:35,702 INFO L413 NwaCegarLoop]: 740 mSDtfsCounter, 1080 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1651 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 2713 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:35,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 2713 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1651 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:30:35,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34457 states. [2022-07-12 06:30:37,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34457 to 23023. [2022-07-12 06:30:37,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23023 states, 19606 states have (on average 1.3243904927063144) internal successors, (25966), 19886 states have internal predecessors, (25966), 2016 states have call successors, (2016), 1207 states have call predecessors, (2016), 1400 states have return successors, (3536), 1931 states have call predecessors, (3536), 2013 states have call successors, (3536) [2022-07-12 06:30:37,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23023 states to 23023 states and 31518 transitions. [2022-07-12 06:30:37,119 INFO L78 Accepts]: Start accepts. Automaton has 23023 states and 31518 transitions. Word has length 87 [2022-07-12 06:30:37,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:37,120 INFO L495 AbstractCegarLoop]: Abstraction has 23023 states and 31518 transitions. [2022-07-12 06:30:37,120 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (8), 4 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:30:37,120 INFO L276 IsEmpty]: Start isEmpty. Operand 23023 states and 31518 transitions. [2022-07-12 06:30:37,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 06:30:37,124 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:37,124 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-12 06:30:37,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:30:37,124 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:37,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:37,125 INFO L85 PathProgramCache]: Analyzing trace with hash -585804370, now seen corresponding path program 1 times [2022-07-12 06:30:37,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:37,125 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930169194] [2022-07-12 06:30:37,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:37,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:37,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:37,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:37,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:37,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:37,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:37,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:37,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:37,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:30:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:37,166 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-12 06:30:37,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:37,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930169194] [2022-07-12 06:30:37,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1930169194] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:37,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:37,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:30:37,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195880626] [2022-07-12 06:30:37,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:37,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:30:37,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:37,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:30:37,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:30:37,168 INFO L87 Difference]: Start difference. First operand 23023 states and 31518 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 06:30:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:41,020 INFO L93 Difference]: Finished difference Result 70442 states and 97850 transitions. [2022-07-12 06:30:41,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 06:30:41,025 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 95 [2022-07-12 06:30:41,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:41,167 INFO L225 Difference]: With dead ends: 70442 [2022-07-12 06:30:41,167 INFO L226 Difference]: Without dead ends: 47435 [2022-07-12 06:30:41,229 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2022-07-12 06:30:41,230 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 1162 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1177 SdHoareTripleChecker+Valid, 1040 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:41,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1177 Valid, 1040 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 06:30:41,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47435 states. [2022-07-12 06:30:43,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47435 to 44532. [2022-07-12 06:30:44,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44532 states, 37825 states have (on average 1.2966556510244547) internal successors, (49046), 38360 states have internal predecessors, (49046), 3900 states have call successors, (3900), 2376 states have call predecessors, (3900), 2806 states have return successors, (7008), 3797 states have call predecessors, (7008), 3897 states have call successors, (7008) [2022-07-12 06:30:44,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44532 states to 44532 states and 59954 transitions. [2022-07-12 06:30:44,348 INFO L78 Accepts]: Start accepts. Automaton has 44532 states and 59954 transitions. Word has length 95 [2022-07-12 06:30:44,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:44,349 INFO L495 AbstractCegarLoop]: Abstraction has 44532 states and 59954 transitions. [2022-07-12 06:30:44,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 5 states have internal predecessors, (78), 4 states have call successors, (9), 4 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 06:30:44,349 INFO L276 IsEmpty]: Start isEmpty. Operand 44532 states and 59954 transitions. [2022-07-12 06:30:44,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 06:30:44,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:44,355 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 06:30:44,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:30:44,356 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:44,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:44,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1094142346, now seen corresponding path program 1 times [2022-07-12 06:30:44,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:44,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061063081] [2022-07-12 06:30:44,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:44,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:44,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:44,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:44,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:44,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:44,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:44,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:30:44,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:44,414 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 06:30:44,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:44,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061063081] [2022-07-12 06:30:44,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061063081] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:30:44,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300321296] [2022-07-12 06:30:44,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:44,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:30:44,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:30:44,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:30:44,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 06:30:44,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:44,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 06:30:44,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:30:44,607 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 06:30:44,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:30:44,759 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 06:30:44,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300321296] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-12 06:30:44,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-12 06:30:44,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 7] total 15 [2022-07-12 06:30:44,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535653441] [2022-07-12 06:30:44,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:44,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 06:30:44,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:44,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 06:30:44,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:30:44,761 INFO L87 Difference]: Start difference. First operand 44532 states and 59954 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:30:47,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:47,563 INFO L93 Difference]: Finished difference Result 47192 states and 63262 transitions. [2022-07-12 06:30:47,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 06:30:47,564 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 96 [2022-07-12 06:30:47,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:47,705 INFO L225 Difference]: With dead ends: 47192 [2022-07-12 06:30:47,705 INFO L226 Difference]: Without dead ends: 47189 [2022-07-12 06:30:47,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2022-07-12 06:30:47,723 INFO L413 NwaCegarLoop]: 221 mSDtfsCounter, 318 mSDsluCounter, 867 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1088 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:47,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1088 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:30:47,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47189 states. [2022-07-12 06:30:51,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47189 to 45616. [2022-07-12 06:30:51,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45616 states, 38728 states have (on average 1.293792604833712) internal successors, (50106), 39281 states have internal predecessors, (50106), 4006 states have call successors, (4006), 2443 states have call predecessors, (4006), 2881 states have return successors, (7155), 3893 states have call predecessors, (7155), 4003 states have call successors, (7155) [2022-07-12 06:30:51,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45616 states to 45616 states and 61267 transitions. [2022-07-12 06:30:51,213 INFO L78 Accepts]: Start accepts. Automaton has 45616 states and 61267 transitions. Word has length 96 [2022-07-12 06:30:51,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:30:51,214 INFO L495 AbstractCegarLoop]: Abstraction has 45616 states and 61267 transitions. [2022-07-12 06:30:51,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 7 states have internal predecessors, (77), 3 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:30:51,214 INFO L276 IsEmpty]: Start isEmpty. Operand 45616 states and 61267 transitions. [2022-07-12 06:30:51,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 06:30:51,218 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:30:51,218 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-12 06:30:51,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 06:30:51,431 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:30:51,433 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:30:51,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:30:51,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2018622111, now seen corresponding path program 1 times [2022-07-12 06:30:51,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:30:51,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677448304] [2022-07-12 06:30:51,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:30:51,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:30:51,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:51,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:30:51,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:30:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:51,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:30:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:51,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:30:51,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:51,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:30:51,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:51,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:30:51,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:51,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:30:51,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:51,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:30:51,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:30:51,486 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 06:30:51,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:30:51,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677448304] [2022-07-12 06:30:51,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677448304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:30:51,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:30:51,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 06:30:51,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984704593] [2022-07-12 06:30:51,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:30:51,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 06:30:51,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:30:51,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 06:30:51,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 06:30:51,488 INFO L87 Difference]: Start difference. First operand 45616 states and 61267 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 06:30:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:30:55,750 INFO L93 Difference]: Finished difference Result 95017 states and 127534 transitions. [2022-07-12 06:30:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 06:30:55,750 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2022-07-12 06:30:55,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:30:55,973 INFO L225 Difference]: With dead ends: 95017 [2022-07-12 06:30:55,973 INFO L226 Difference]: Without dead ends: 49417 [2022-07-12 06:30:56,196 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:30:56,197 INFO L413 NwaCegarLoop]: 199 mSDtfsCounter, 376 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 06:30:56,197 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [382 Valid, 568 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 06:30:56,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49417 states. [2022-07-12 06:31:00,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49417 to 45504. [2022-07-12 06:31:00,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45504 states, 38504 states have (on average 1.2854768335757323) internal successors, (49496), 39169 states have internal predecessors, (49496), 4006 states have call successors, (4006), 2443 states have call predecessors, (4006), 2993 states have return successors, (6707), 3893 states have call predecessors, (6707), 4003 states have call successors, (6707) [2022-07-12 06:31:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45504 states to 45504 states and 60209 transitions. [2022-07-12 06:31:00,303 INFO L78 Accepts]: Start accepts. Automaton has 45504 states and 60209 transitions. Word has length 97 [2022-07-12 06:31:00,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:31:00,303 INFO L495 AbstractCegarLoop]: Abstraction has 45504 states and 60209 transitions. [2022-07-12 06:31:00,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 06:31:00,303 INFO L276 IsEmpty]: Start isEmpty. Operand 45504 states and 60209 transitions. [2022-07-12 06:31:00,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-12 06:31:00,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:31:00,308 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-12 06:31:00,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:31:00,308 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:31:00,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:31:00,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1281651487, now seen corresponding path program 1 times [2022-07-12 06:31:00,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:31:00,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677979597] [2022-07-12 06:31:00,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:31:00,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:31:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:31:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:00,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:31:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:00,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:31:00,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:31:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:00,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:31:00,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:00,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:31:00,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:31:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:31:00,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:00,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 06:31:00,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:31:00,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677979597] [2022-07-12 06:31:00,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677979597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:31:00,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:31:00,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 06:31:00,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536245635] [2022-07-12 06:31:00,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:31:00,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:31:00,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:31:00,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:31:00,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 06:31:00,345 INFO L87 Difference]: Start difference. First operand 45504 states and 60209 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:31:03,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:31:03,531 INFO L93 Difference]: Finished difference Result 51692 states and 68590 transitions. [2022-07-12 06:31:03,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 06:31:03,539 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 97 [2022-07-12 06:31:03,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:31:03,693 INFO L225 Difference]: With dead ends: 51692 [2022-07-12 06:31:03,694 INFO L226 Difference]: Without dead ends: 49214 [2022-07-12 06:31:03,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 06:31:03,724 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 308 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:31:03,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 331 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 06:31:03,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49214 states. [2022-07-12 06:31:07,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49214 to 45341. [2022-07-12 06:31:07,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45341 states, 38371 states have (on average 1.2857366240129264) internal successors, (49335), 39034 states have internal predecessors, (49335), 3987 states have call successors, (3987), 2433 states have call predecessors, (3987), 2982 states have return successors, (6686), 3874 states have call predecessors, (6686), 3984 states have call successors, (6686) [2022-07-12 06:31:07,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45341 states to 45341 states and 60008 transitions. [2022-07-12 06:31:07,230 INFO L78 Accepts]: Start accepts. Automaton has 45341 states and 60008 transitions. Word has length 97 [2022-07-12 06:31:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:31:07,231 INFO L495 AbstractCegarLoop]: Abstraction has 45341 states and 60008 transitions. [2022-07-12 06:31:07,231 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 06:31:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 45341 states and 60008 transitions. [2022-07-12 06:31:07,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 06:31:07,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:31:07,235 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-12 06:31:07,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:31:07,235 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:31:07,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:31:07,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1766914234, now seen corresponding path program 1 times [2022-07-12 06:31:07,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:31:07,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69941234] [2022-07-12 06:31:07,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:31:07,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:31:07,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:07,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 06:31:07,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:07,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 06:31:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 06:31:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:31:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:07,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 06:31:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 06:31:07,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:31:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:07,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:31:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:31:07,274 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-12 06:31:07,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:31:07,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69941234] [2022-07-12 06:31:07,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69941234] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:31:07,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:31:07,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:31:07,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455604036] [2022-07-12 06:31:07,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:31:07,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:31:07,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:31:07,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:31:07,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:31:07,276 INFO L87 Difference]: Start difference. First operand 45341 states and 60008 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 5 states have internal predecessors, (77), 4 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8)