./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-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 64bit --witnessprinter.graph.data.programhash c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 11:36:04,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 11:36:04,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 11:36:04,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 11:36:04,170 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 11:36:04,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 11:36:04,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 11:36:04,180 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 11:36:04,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 11:36:04,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 11:36:04,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 11:36:04,194 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 11:36:04,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 11:36:04,197 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 11:36:04,199 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 11:36:04,207 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 11:36:04,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 11:36:04,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 11:36:04,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 11:36:04,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 11:36:04,226 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 11:36:04,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 11:36:04,231 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 11:36:04,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 11:36:04,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 11:36:04,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 11:36:04,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 11:36:04,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 11:36:04,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 11:36:04,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 11:36:04,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 11:36:04,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 11:36:04,244 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 11:36:04,245 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 11:36:04,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 11:36:04,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 11:36:04,249 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 11:36:04,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 11:36:04,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 11:36:04,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 11:36:04,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 11:36:04,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 11:36:04,253 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-21 11:36:04,292 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 11:36:04,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 11:36:04,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 11:36:04,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 11:36:04,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 11:36:04,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 11:36:04,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 11:36:04,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 11:36:04,296 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 11:36:04,297 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 11:36:04,298 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 11:36:04,298 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 11:36:04,298 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 11:36:04,298 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 11:36:04,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 11:36:04,299 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 11:36:04,299 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 11:36:04,299 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 11:36:04,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 11:36:04,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 11:36:04,300 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 11:36:04,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:36:04,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 11:36:04,301 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 11:36:04,301 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 11:36:04,301 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 11:36:04,301 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 11:36:04,301 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 11:36:04,302 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 11:36:04,302 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 11:36:04,302 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c3c8f5f42e93f38ff45b5fb218b90423c4fa8214795cc0db5e91266a2717c97b [2022-07-21 11:36:04,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 11:36:04,727 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 11:36:04,731 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 11:36:04,732 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 11:36:04,733 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 11:36:04,736 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-07-21 11:36:04,798 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d0ccaa0/898ee8f2d5e147c38026ef79e05ddf3f/FLAGefaa017ae [2022-07-21 11:36:05,697 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 11:36:05,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-07-21 11:36:05,740 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d0ccaa0/898ee8f2d5e147c38026ef79e05ddf3f/FLAGefaa017ae [2022-07-21 11:36:05,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/36d0ccaa0/898ee8f2d5e147c38026ef79e05ddf3f [2022-07-21 11:36:05,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 11:36:05,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 11:36:05,835 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 11:36:05,835 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 11:36:05,839 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 11:36:05,840 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:36:05" (1/1) ... [2022-07-21 11:36:05,841 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19781933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:05, skipping insertion in model container [2022-07-21 11:36:05,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:36:05" (1/1) ... [2022-07-21 11:36:05,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 11:36:05,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 11:36:06,937 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/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2022-07-21 11:36:07,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:36:07,947 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 11:36:08,049 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/ldv-validator-v0.6/linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i[98402,98415] [2022-07-21 11:36:08,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 11:36:08,448 INFO L208 MainTranslator]: Completed translation [2022-07-21 11:36:08,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08 WrapperNode [2022-07-21 11:36:08,450 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 11:36:08,451 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 11:36:08,451 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 11:36:08,451 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 11:36:08,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,665 INFO L137 Inliner]: procedures = 256, calls = 2398, calls flagged for inlining = 116, calls inlined = 95, statements flattened = 3947 [2022-07-21 11:36:08,666 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 11:36:08,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 11:36:08,667 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 11:36:08,667 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 11:36:08,674 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,675 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,698 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,698 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,817 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,841 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 11:36:08,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 11:36:08,893 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 11:36:08,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 11:36:08,894 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (1/1) ... [2022-07-21 11:36:08,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 11:36:08,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:36:08,962 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 11:36:09,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 11:36:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_strcpy [2022-07-21 11:36:09,053 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_strcpy [2022-07-21 11:36:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2022-07-21 11:36:09,053 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2022-07-21 11:36:09,053 INFO L130 BoogieDeclarations]: Found specification of procedure usb_submit_urb [2022-07-21 11:36:09,054 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_submit_urb [2022-07-21 11:36:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-07-21 11:36:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-21 11:36:09,054 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-21 11:36:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-21 11:36:09,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-21 11:36:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_dev [2022-07-21 11:36:09,055 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_dev [2022-07-21 11:36:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-07-21 11:36:09,055 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-07-21 11:36:09,055 INFO L130 BoogieDeclarations]: Found specification of procedure usb_make_path [2022-07-21 11:36:09,056 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_make_path [2022-07-21 11:36:09,056 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 11:36:09,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 11:36:09,075 INFO L130 BoogieDeclarations]: Found specification of procedure send_packet [2022-07-21 11:36:09,075 INFO L138 BoogieDeclarations]: Found implementation of procedure send_packet [2022-07-21 11:36:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-07-21 11:36:09,076 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-07-21 11:36:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-21 11:36:09,076 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-21 11:36:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-21 11:36:09,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-21 11:36:09,076 INFO L130 BoogieDeclarations]: Found specification of procedure imon_disconnect [2022-07-21 11:36:09,077 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_disconnect [2022-07-21 11:36:09,077 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2022-07-21 11:36:09,077 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_deregister_dev [2022-07-21 11:36:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_imon_context [2022-07-21 11:36:09,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_imon_context [2022-07-21 11:36:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-21 11:36:09,078 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-21 11:36:09,078 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-21 11:36:09,079 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-21 11:36:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-21 11:36:09,079 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-21 11:36:09,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_driver_lock [2022-07-21 11:36:09,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_driver_lock [2022-07-21 11:36:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-21 11:36:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-07-21 11:36:09,080 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-07-21 11:36:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 11:36:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure input_allocate_device [2022-07-21 11:36:09,081 INFO L138 BoogieDeclarations]: Found implementation of procedure input_allocate_device [2022-07-21 11:36:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2022-07-21 11:36:09,081 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2022-07-21 11:36:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 11:36:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 11:36:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-21 11:36:09,082 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-21 11:36:09,082 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-21 11:36:09,083 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-21 11:36:09,083 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2022-07-21 11:36:09,083 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2022-07-21 11:36:09,084 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_drvdata [2022-07-21 11:36:09,084 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_drvdata [2022-07-21 11:36:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-07-21 11:36:09,085 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-07-21 11:36:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure usb_alloc_urb [2022-07-21 11:36:09,085 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_alloc_urb [2022-07-21 11:36:09,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-21 11:36:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-21 11:36:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-21 11:36:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-07-21 11:36:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-07-21 11:36:09,086 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-07-21 11:36:09,086 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-07-21 11:36:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-21 11:36:09,087 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-21 11:36:09,087 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-21 11:36:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure input_free_device [2022-07-21 11:36:09,088 INFO L138 BoogieDeclarations]: Found implementation of procedure input_free_device [2022-07-21 11:36:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_create_group [2022-07-21 11:36:09,088 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_create_group [2022-07-21 11:36:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 11:36:09,088 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-21 11:36:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-21 11:36:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure sysfs_remove_group [2022-07-21 11:36:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure sysfs_remove_group [2022-07-21 11:36:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-21 11:36:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-21 11:36:09,089 INFO L130 BoogieDeclarations]: Found specification of procedure lcd_write [2022-07-21 11:36:09,089 INFO L138 BoogieDeclarations]: Found implementation of procedure lcd_write [2022-07-21 11:36:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-21 11:36:09,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-21 11:36:09,090 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-21 11:36:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-21 11:36:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_int_urb [2022-07-21 11:36:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_int_urb [2022-07-21 11:36:09,091 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-21 11:36:09,091 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-21 11:36:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 11:36:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure usb_to_input_id [2022-07-21 11:36:09,092 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_to_input_id [2022-07-21 11:36:09,092 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-07-21 11:36:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-07-21 11:36:09,093 INFO L130 BoogieDeclarations]: Found specification of procedure noop_llseek [2022-07-21 11:36:09,093 INFO L138 BoogieDeclarations]: Found implementation of procedure noop_llseek [2022-07-21 11:36:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-21 11:36:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-21 11:36:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure free_imon_context [2022-07-21 11:36:09,094 INFO L138 BoogieDeclarations]: Found implementation of procedure free_imon_context [2022-07-21 11:36:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 11:36:09,094 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-07-21 11:36:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-07-21 11:36:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure input_register_device [2022-07-21 11:36:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure input_register_device [2022-07-21 11:36:09,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_imon_context [2022-07-21 11:36:09,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_imon_context [2022-07-21 11:36:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-07-21 11:36:09,096 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-07-21 11:36:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 11:36:09,096 INFO L130 BoogieDeclarations]: Found specification of procedure vfd_write [2022-07-21 11:36:09,096 INFO L138 BoogieDeclarations]: Found implementation of procedure vfd_write [2022-07-21 11:36:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 11:36:09,097 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-07-21 11:36:09,099 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-07-21 11:36:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-21 11:36:09,100 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-07-21 11:36:09,100 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-07-21 11:36:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure display_close [2022-07-21 11:36:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure display_close [2022-07-21 11:36:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2022-07-21 11:36:09,102 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_register_dev [2022-07-21 11:36:09,102 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2022-07-21 11:36:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2022-07-21 11:36:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_driver_lock [2022-07-21 11:36:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_driver_lock [2022-07-21 11:36:09,107 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-07-21 11:36:09,107 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-07-21 11:36:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure imon_find_endpoints [2022-07-21 11:36:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure imon_find_endpoints [2022-07-21 11:36:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure display_open [2022-07-21 11:36:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure display_open [2022-07-21 11:36:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 11:36:09,108 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-21 11:36:09,108 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-21 11:36:09,109 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 11:36:09,109 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 11:36:09,740 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 11:36:09,742 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 11:36:10,140 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-21 11:36:14,128 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 11:36:14,146 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 11:36:14,146 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 11:36:14,149 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:36:14 BoogieIcfgContainer [2022-07-21 11:36:14,149 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 11:36:14,151 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 11:36:14,151 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 11:36:14,153 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 11:36:14,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:36:05" (1/3) ... [2022-07-21 11:36:14,154 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5771ff48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:36:14, skipping insertion in model container [2022-07-21 11:36:14,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:36:08" (2/3) ... [2022-07-21 11:36:14,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5771ff48 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:36:14, skipping insertion in model container [2022-07-21 11:36:14,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:36:14" (3/3) ... [2022-07-21 11:36:14,156 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a9e7fb5-1-32_7a-drivers--media--rc--imon.ko-entry_point.cil.out.i [2022-07-21 11:36:14,169 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 11:36:14,169 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 11:36:14,236 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 11:36:14,242 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@615d004a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2846320d [2022-07-21 11:36:14,242 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 11:36:14,252 INFO L276 IsEmpty]: Start isEmpty. Operand has 1128 states, 791 states have (on average 1.3653603034134008) internal successors, (1080), 813 states have internal predecessors, (1080), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) [2022-07-21 11:36:14,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-21 11:36:14,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:36:14,264 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:36:14,264 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:36:14,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:36:14,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1344748541, now seen corresponding path program 1 times [2022-07-21 11:36:14,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:36:14,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [127476337] [2022-07-21 11:36:14,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:36:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:36:14,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:36:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:14,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:36:15,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:36:15,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:15,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:36:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:36:15,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:36:15,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:15,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:36:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:15,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:36:15,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:15,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:36:15,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 11:36:15,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:36:15,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [127476337] [2022-07-21 11:36:15,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [127476337] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:36:15,084 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:36:15,084 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:36:15,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582344395] [2022-07-21 11:36:15,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:36:15,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:36:15,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:36:15,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:36:15,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:36:15,128 INFO L87 Difference]: Start difference. First operand has 1128 states, 791 states have (on average 1.3653603034134008) internal successors, (1080), 813 states have internal predecessors, (1080), 274 states have call successors, (274), 62 states have call predecessors, (274), 61 states have return successors, (267), 266 states have call predecessors, (267), 267 states have call successors, (267) Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 11:36:20,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:36:20,329 INFO L93 Difference]: Finished difference Result 3354 states and 5074 transitions. [2022-07-21 11:36:20,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:36:20,332 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 72 [2022-07-21 11:36:20,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:36:20,359 INFO L225 Difference]: With dead ends: 3354 [2022-07-21 11:36:20,359 INFO L226 Difference]: Without dead ends: 2206 [2022-07-21 11:36:20,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:36:20,377 INFO L413 NwaCegarLoop]: 1797 mSDtfsCounter, 1639 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1116 mSolverCounterSat, 600 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 3736 SdHoareTripleChecker+Invalid, 1716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 600 IncrementalHoareTripleChecker+Valid, 1116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:36:20,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 3736 Invalid, 1716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [600 Valid, 1116 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-21 11:36:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2206 states. [2022-07-21 11:36:20,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2206 to 2118. [2022-07-21 11:36:20,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2118 states, 1498 states have (on average 1.3377837116154874) internal successors, (2004), 1519 states have internal predecessors, (2004), 500 states have call successors, (500), 120 states have call predecessors, (500), 119 states have return successors, (493), 490 states have call predecessors, (493), 493 states have call successors, (493) [2022-07-21 11:36:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2118 states to 2118 states and 2997 transitions. [2022-07-21 11:36:20,579 INFO L78 Accepts]: Start accepts. Automaton has 2118 states and 2997 transitions. Word has length 72 [2022-07-21 11:36:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:36:20,580 INFO L495 AbstractCegarLoop]: Abstraction has 2118 states and 2997 transitions. [2022-07-21 11:36:20,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 11:36:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 2118 states and 2997 transitions. [2022-07-21 11:36:20,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-21 11:36:20,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:36:20,590 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:36:20,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 11:36:20,591 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:36:20,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:36:20,591 INFO L85 PathProgramCache]: Analyzing trace with hash -708368327, now seen corresponding path program 1 times [2022-07-21 11:36:20,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:36:20,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7790010] [2022-07-21 11:36:20,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:36:20,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:36:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:36:20,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:36:20,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:36:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:36:20,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:36:20,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:36:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:36:20,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:36:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:36:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:20,919 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 11:36:20,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:36:20,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7790010] [2022-07-21 11:36:20,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7790010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:36:20,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:36:20,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:36:20,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570225876] [2022-07-21 11:36:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:36:20,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:36:20,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:36:20,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:36:20,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:36:20,957 INFO L87 Difference]: Start difference. First operand 2118 states and 2997 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 11:36:25,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:36:25,050 INFO L93 Difference]: Finished difference Result 5318 states and 7592 transitions. [2022-07-21 11:36:25,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:36:25,050 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 73 [2022-07-21 11:36:25,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:36:25,074 INFO L225 Difference]: With dead ends: 5318 [2022-07-21 11:36:25,075 INFO L226 Difference]: Without dead ends: 3223 [2022-07-21 11:36:25,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:36:25,086 INFO L413 NwaCegarLoop]: 1757 mSDtfsCounter, 963 mSDsluCounter, 1960 mSDsCounter, 0 mSdLazyCounter, 1015 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 3717 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 1015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:36:25,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 3717 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 1015 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-21 11:36:25,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3223 states. [2022-07-21 11:36:25,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3223 to 3093. [2022-07-21 11:36:25,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3093 states, 2200 states have (on average 1.3436363636363637) internal successors, (2956), 2221 states have internal predecessors, (2956), 707 states have call successors, (707), 186 states have call predecessors, (707), 185 states have return successors, (700), 697 states have call predecessors, (700), 700 states have call successors, (700) [2022-07-21 11:36:25,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3093 states to 3093 states and 4363 transitions. [2022-07-21 11:36:25,215 INFO L78 Accepts]: Start accepts. Automaton has 3093 states and 4363 transitions. Word has length 73 [2022-07-21 11:36:25,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:36:25,217 INFO L495 AbstractCegarLoop]: Abstraction has 3093 states and 4363 transitions. [2022-07-21 11:36:25,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 11:36:25,217 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 4363 transitions. [2022-07-21 11:36:25,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-21 11:36:25,220 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:36:25,220 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:36:25,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 11:36:25,221 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:36:25,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:36:25,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1292444905, now seen corresponding path program 1 times [2022-07-21 11:36:25,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:36:25,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479411686] [2022-07-21 11:36:25,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:36:25,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:36:25,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:36:25,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:36:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:36:25,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:36:25,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:36:25,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:36:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:36:25,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:36:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:36:25,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 11:36:25,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:36:25,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479411686] [2022-07-21 11:36:25,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479411686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:36:25,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:36:25,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:36:25,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207284419] [2022-07-21 11:36:25,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:36:25,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:36:25,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:36:25,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:36:25,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:36:25,569 INFO L87 Difference]: Start difference. First operand 3093 states and 4363 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 11:36:30,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:36:30,089 INFO L93 Difference]: Finished difference Result 9380 states and 13384 transitions. [2022-07-21 11:36:30,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:36:30,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 74 [2022-07-21 11:36:30,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:36:30,129 INFO L225 Difference]: With dead ends: 9380 [2022-07-21 11:36:30,130 INFO L226 Difference]: Without dead ends: 6317 [2022-07-21 11:36:30,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:36:30,147 INFO L413 NwaCegarLoop]: 1887 mSDtfsCounter, 1636 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 3907 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:36:30,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 3907 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-21 11:36:30,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6317 states. [2022-07-21 11:36:30,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6317 to 6083. [2022-07-21 11:36:30,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6083 states, 4332 states have (on average 1.3439519852262234) internal successors, (5822), 4367 states have internal predecessors, (5822), 1381 states have call successors, (1381), 370 states have call predecessors, (1381), 369 states have return successors, (1374), 1369 states have call predecessors, (1374), 1374 states have call successors, (1374) [2022-07-21 11:36:30,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6083 states to 6083 states and 8577 transitions. [2022-07-21 11:36:30,431 INFO L78 Accepts]: Start accepts. Automaton has 6083 states and 8577 transitions. Word has length 74 [2022-07-21 11:36:30,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:36:30,431 INFO L495 AbstractCegarLoop]: Abstraction has 6083 states and 8577 transitions. [2022-07-21 11:36:30,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (10), 2 states have call predecessors, (10), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 11:36:30,436 INFO L276 IsEmpty]: Start isEmpty. Operand 6083 states and 8577 transitions. [2022-07-21 11:36:30,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-21 11:36:30,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:36:30,438 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:36:30,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 11:36:30,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:36:30,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:36:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash -2075178369, now seen corresponding path program 1 times [2022-07-21 11:36:30,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:36:30,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980400836] [2022-07-21 11:36:30,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:36:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:36:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:36:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:36:30,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:36:30,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:36:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:36:30,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:36:30,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:36:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:36:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:36:30,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:30,719 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 11:36:30,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:36:30,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980400836] [2022-07-21 11:36:30,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980400836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:36:30,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:36:30,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:36:30,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100046381] [2022-07-21 11:36:30,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:36:30,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:36:30,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:36:30,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:36:30,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:36:30,722 INFO L87 Difference]: Start difference. First operand 6083 states and 8577 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 11:36:35,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:36:35,343 INFO L93 Difference]: Finished difference Result 17826 states and 25352 transitions. [2022-07-21 11:36:35,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:36:35,343 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 78 [2022-07-21 11:36:35,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:36:35,414 INFO L225 Difference]: With dead ends: 17826 [2022-07-21 11:36:35,414 INFO L226 Difference]: Without dead ends: 11773 [2022-07-21 11:36:35,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:36:35,445 INFO L413 NwaCegarLoop]: 1956 mSDtfsCounter, 1599 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 1139 mSolverCounterSat, 543 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1795 SdHoareTripleChecker+Valid, 3967 SdHoareTripleChecker+Invalid, 1682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 543 IncrementalHoareTripleChecker+Valid, 1139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:36:35,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1795 Valid, 3967 Invalid, 1682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [543 Valid, 1139 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-21 11:36:35,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11773 states. [2022-07-21 11:36:35,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11773 to 11317. [2022-07-21 11:36:35,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11317 states, 8100 states have (on average 1.3422222222222222) internal successors, (10872), 8163 states have internal predecessors, (10872), 2521 states have call successors, (2521), 696 states have call predecessors, (2521), 695 states have return successors, (2514), 2505 states have call predecessors, (2514), 2514 states have call successors, (2514) [2022-07-21 11:36:35,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11317 states to 11317 states and 15907 transitions. [2022-07-21 11:36:35,926 INFO L78 Accepts]: Start accepts. Automaton has 11317 states and 15907 transitions. Word has length 78 [2022-07-21 11:36:35,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:36:35,927 INFO L495 AbstractCegarLoop]: Abstraction has 11317 states and 15907 transitions. [2022-07-21 11:36:35,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 3 states have internal predecessors, (33), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-21 11:36:35,928 INFO L276 IsEmpty]: Start isEmpty. Operand 11317 states and 15907 transitions. [2022-07-21 11:36:35,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-21 11:36:35,929 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:36:35,929 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:36:35,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 11:36:35,930 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:36:35,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:36:35,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1031803367, now seen corresponding path program 1 times [2022-07-21 11:36:35,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:36:35,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023993895] [2022-07-21 11:36:35,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:36:35,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:36:36,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:36:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:36:36,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:36:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:36:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:36:36,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:36:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:36:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:36:36,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:36:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-21 11:36:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:36:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:36,297 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 11:36:36,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:36:36,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023993895] [2022-07-21 11:36:36,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023993895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:36:36,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:36:36,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:36:36,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022502819] [2022-07-21 11:36:36,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:36:36,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:36:36,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:36:36,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:36:36,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:36:36,300 INFO L87 Difference]: Start difference. First operand 11317 states and 15907 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 11:36:39,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:36:39,277 INFO L93 Difference]: Finished difference Result 33956 states and 47900 transitions. [2022-07-21 11:36:39,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:36:39,278 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 85 [2022-07-21 11:36:39,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:36:39,441 INFO L225 Difference]: With dead ends: 33956 [2022-07-21 11:36:39,441 INFO L226 Difference]: Without dead ends: 22669 [2022-07-21 11:36:39,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:36:39,499 INFO L413 NwaCegarLoop]: 2008 mSDtfsCounter, 1930 mSDsluCounter, 2188 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 1057 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2145 SdHoareTripleChecker+Valid, 4196 SdHoareTripleChecker+Invalid, 2081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1057 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:36:39,502 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2145 Valid, 4196 Invalid, 2081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1057 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-21 11:36:39,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22669 states. [2022-07-21 11:36:40,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22669 to 21483. [2022-07-21 11:36:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21483 states, 15282 states have (on average 1.332155477031802) internal successors, (20358), 15403 states have internal predecessors, (20358), 4811 states have call successors, (4811), 1390 states have call predecessors, (4811), 1389 states have return successors, (4804), 4785 states have call predecessors, (4804), 4804 states have call successors, (4804) [2022-07-21 11:36:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21483 states to 21483 states and 29973 transitions. [2022-07-21 11:36:40,523 INFO L78 Accepts]: Start accepts. Automaton has 21483 states and 29973 transitions. Word has length 85 [2022-07-21 11:36:40,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:36:40,524 INFO L495 AbstractCegarLoop]: Abstraction has 21483 states and 29973 transitions. [2022-07-21 11:36:40,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 11:36:40,524 INFO L276 IsEmpty]: Start isEmpty. Operand 21483 states and 29973 transitions. [2022-07-21 11:36:40,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 11:36:40,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:36:40,531 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:36:40,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 11:36:40,532 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:36:40,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:36:40,533 INFO L85 PathProgramCache]: Analyzing trace with hash 493921809, now seen corresponding path program 1 times [2022-07-21 11:36:40,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:36:40,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885683302] [2022-07-21 11:36:40,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:36:40,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:36:40,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:36:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:36:40,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:36:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:36:40,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:36:40,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:36:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:36:40,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:36:40,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:36:40,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 11:36:40,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:36:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:40,829 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-21 11:36:40,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:36:40,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885683302] [2022-07-21 11:36:40,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885683302] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:36:40,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:36:40,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:36:40,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752708911] [2022-07-21 11:36:40,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:36:40,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:36:40,832 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:36:40,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:36:40,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:36:40,833 INFO L87 Difference]: Start difference. First operand 21483 states and 29973 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 11:36:47,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:36:47,177 INFO L93 Difference]: Finished difference Result 64836 states and 90941 transitions. [2022-07-21 11:36:47,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:36:47,178 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2022-07-21 11:36:47,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:36:47,438 INFO L225 Difference]: With dead ends: 64836 [2022-07-21 11:36:47,439 INFO L226 Difference]: Without dead ends: 43383 [2022-07-21 11:36:47,528 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:36:47,530 INFO L413 NwaCegarLoop]: 2147 mSDtfsCounter, 1612 mSDsluCounter, 3233 mSDsCounter, 0 mSdLazyCounter, 1719 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1830 SdHoareTripleChecker+Valid, 5380 SdHoareTripleChecker+Invalid, 2258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 1719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:36:47,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1830 Valid, 5380 Invalid, 2258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 1719 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-21 11:36:47,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43383 states. [2022-07-21 11:36:49,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43383 to 41121. [2022-07-21 11:36:49,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41121 states, 29329 states have (on average 1.3311398274745132) internal successors, (39041), 29566 states have internal predecessors, (39041), 9077 states have call successors, (9077), 2715 states have call predecessors, (9077), 2714 states have return successors, (9070), 9031 states have call predecessors, (9070), 9070 states have call successors, (9070) [2022-07-21 11:36:49,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41121 states to 41121 states and 57188 transitions. [2022-07-21 11:36:49,520 INFO L78 Accepts]: Start accepts. Automaton has 41121 states and 57188 transitions. Word has length 87 [2022-07-21 11:36:49,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:36:49,521 INFO L495 AbstractCegarLoop]: Abstraction has 41121 states and 57188 transitions. [2022-07-21 11:36:49,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-21 11:36:49,521 INFO L276 IsEmpty]: Start isEmpty. Operand 41121 states and 57188 transitions. [2022-07-21 11:36:49,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-21 11:36:49,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:36:49,522 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:36:49,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 11:36:49,523 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:36:49,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:36:49,523 INFO L85 PathProgramCache]: Analyzing trace with hash 834901463, now seen corresponding path program 1 times [2022-07-21 11:36:49,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:36:49,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53050359] [2022-07-21 11:36:49,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:36:49,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:36:49,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:49,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:36:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:49,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:36:49,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:36:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:50,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:36:50,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:50,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:36:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:50,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:36:50,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:50,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:36:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:50,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:36:50,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:36:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:50,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:36:50,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:50,068 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:36:50,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:36:50,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53050359] [2022-07-21 11:36:50,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53050359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:36:50,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:36:50,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:36:50,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972865728] [2022-07-21 11:36:50,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:36:50,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:36:50,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:36:50,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:36:50,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:36:50,072 INFO L87 Difference]: Start difference. First operand 41121 states and 57188 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 11:36:54,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:36:54,513 INFO L93 Difference]: Finished difference Result 49503 states and 67738 transitions. [2022-07-21 11:36:54,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:36:54,513 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-07-21 11:36:54,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:36:54,891 INFO L225 Difference]: With dead ends: 49503 [2022-07-21 11:36:54,891 INFO L226 Difference]: Without dead ends: 49499 [2022-07-21 11:36:54,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:36:54,921 INFO L413 NwaCegarLoop]: 1599 mSDtfsCounter, 1036 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2918 SdHoareTripleChecker+Invalid, 1131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:36:54,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2918 Invalid, 1131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-21 11:36:54,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49499 states. [2022-07-21 11:36:56,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49499 to 46977. [2022-07-21 11:36:56,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46977 states, 33543 states have (on average 1.313597471901738) internal successors, (44062), 33778 states have internal predecessors, (44062), 9845 states have call successors, (9845), 3589 states have call predecessors, (9845), 3588 states have return successors, (9840), 9801 states have call predecessors, (9840), 9840 states have call successors, (9840) [2022-07-21 11:36:56,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46977 states to 46977 states and 63747 transitions. [2022-07-21 11:36:56,574 INFO L78 Accepts]: Start accepts. Automaton has 46977 states and 63747 transitions. Word has length 86 [2022-07-21 11:36:56,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:36:56,574 INFO L495 AbstractCegarLoop]: Abstraction has 46977 states and 63747 transitions. [2022-07-21 11:36:56,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 11:36:56,575 INFO L276 IsEmpty]: Start isEmpty. Operand 46977 states and 63747 transitions. [2022-07-21 11:36:56,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-21 11:36:56,575 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:36:56,576 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:36:56,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 11:36:56,576 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:36:56,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:36:56,577 INFO L85 PathProgramCache]: Analyzing trace with hash 111615706, now seen corresponding path program 1 times [2022-07-21 11:36:56,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:36:56,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658502549] [2022-07-21 11:36:56,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:36:56,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:36:56,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:56,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:36:56,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:36:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:56,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:36:56,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:56,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:36:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:36:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:36:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:36:56,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:36:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:57,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:36:57,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:36:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:36:57,073 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:36:57,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:36:57,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658502549] [2022-07-21 11:36:57,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658502549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:36:57,074 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:36:57,074 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:36:57,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778325613] [2022-07-21 11:36:57,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:36:57,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:36:57,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:36:57,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:36:57,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:36:57,076 INFO L87 Difference]: Start difference. First operand 46977 states and 63747 transitions. Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 11:37:02,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:37:02,019 INFO L93 Difference]: Finished difference Result 117619 states and 159399 transitions. [2022-07-21 11:37:02,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:37:02,020 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 87 [2022-07-21 11:37:02,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:37:02,600 INFO L225 Difference]: With dead ends: 117619 [2022-07-21 11:37:02,600 INFO L226 Difference]: Without dead ends: 70676 [2022-07-21 11:37:02,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:37:02,751 INFO L413 NwaCegarLoop]: 1743 mSDtfsCounter, 982 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 962 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 1390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 962 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-21 11:37:02,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 3578 Invalid, 1390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 962 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-21 11:37:02,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70676 states. [2022-07-21 11:37:04,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70676 to 65861. [2022-07-21 11:37:04,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65861 states, 47000 states have (on average 1.3086808510638297) internal successors, (61508), 47638 states have internal predecessors, (61508), 13401 states have call successors, (13401), 5609 states have call predecessors, (13401), 5459 states have return successors, (13650), 12869 states have call predecessors, (13650), 13394 states have call successors, (13650) [2022-07-21 11:37:04,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65861 states to 65861 states and 88559 transitions. [2022-07-21 11:37:04,827 INFO L78 Accepts]: Start accepts. Automaton has 65861 states and 88559 transitions. Word has length 87 [2022-07-21 11:37:04,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:37:04,828 INFO L495 AbstractCegarLoop]: Abstraction has 65861 states and 88559 transitions. [2022-07-21 11:37:04,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 11:37:04,828 INFO L276 IsEmpty]: Start isEmpty. Operand 65861 states and 88559 transitions. [2022-07-21 11:37:04,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-21 11:37:04,829 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:37:04,829 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:37:04,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 11:37:04,830 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:37:04,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:37:04,831 INFO L85 PathProgramCache]: Analyzing trace with hash -835401414, now seen corresponding path program 1 times [2022-07-21 11:37:04,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:37:04,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [385690516] [2022-07-21 11:37:04,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:37:04,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:37:04,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:37:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:37:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:37:05,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:37:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:37:05,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:37:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:37:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:37:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:37:05,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:37:05,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:05,058 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2022-07-21 11:37:05,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:37:05,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [385690516] [2022-07-21 11:37:05,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [385690516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:37:05,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:37:05,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 11:37:05,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535310423] [2022-07-21 11:37:05,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:37:05,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 11:37:05,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:37:05,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 11:37:05,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 11:37:05,061 INFO L87 Difference]: Start difference. First operand 65861 states and 88559 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 11:37:09,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:37:09,394 INFO L93 Difference]: Finished difference Result 70021 states and 94640 transitions. [2022-07-21 11:37:09,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 11:37:09,395 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-07-21 11:37:09,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:37:09,696 INFO L225 Difference]: With dead ends: 70021 [2022-07-21 11:37:09,696 INFO L226 Difference]: Without dead ends: 70011 [2022-07-21 11:37:09,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:37:09,922 INFO L413 NwaCegarLoop]: 1548 mSDtfsCounter, 1504 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 334 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 2311 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 334 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:37:09,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 2311 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [334 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-21 11:37:09,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70011 states. [2022-07-21 11:37:11,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70011 to 65853. [2022-07-21 11:37:11,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65853 states, 46993 states have (on average 1.3076841231672802) internal successors, (61452), 47630 states have internal predecessors, (61452), 13400 states have call successors, (13400), 5609 states have call predecessors, (13400), 5459 states have return successors, (13650), 12869 states have call predecessors, (13650), 13394 states have call successors, (13650) [2022-07-21 11:37:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65853 states to 65853 states and 88502 transitions. [2022-07-21 11:37:11,825 INFO L78 Accepts]: Start accepts. Automaton has 65853 states and 88502 transitions. Word has length 88 [2022-07-21 11:37:11,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:37:11,826 INFO L495 AbstractCegarLoop]: Abstraction has 65853 states and 88502 transitions. [2022-07-21 11:37:11,826 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (11), 2 states have call predecessors, (11), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-21 11:37:11,826 INFO L276 IsEmpty]: Start isEmpty. Operand 65853 states and 88502 transitions. [2022-07-21 11:37:11,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2022-07-21 11:37:11,834 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:37:11,835 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:37:11,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 11:37:11,835 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:37:11,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:37:11,836 INFO L85 PathProgramCache]: Analyzing trace with hash -566974902, now seen corresponding path program 1 times [2022-07-21 11:37:11,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:37:11,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98515795] [2022-07-21 11:37:11,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:37:11,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:37:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:37:12,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:37:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:37:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:37:12,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:37:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:37:12,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:37:12,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:37:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:37:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:37:12,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:37:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 11:37:12,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:12,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-21 11:37:12,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 11:37:12,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-21 11:37:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-21 11:37:12,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-21 11:37:12,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:12,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-21 11:37:12,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:12,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:12,452 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-21 11:37:12,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:37:12,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98515795] [2022-07-21 11:37:12,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98515795] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:37:12,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:37:12,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:37:12,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872906134] [2022-07-21 11:37:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:37:12,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:37:12,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:37:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:37:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:37:12,455 INFO L87 Difference]: Start difference. First operand 65853 states and 88502 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:37:15,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:37:15,961 INFO L93 Difference]: Finished difference Result 102069 states and 137321 transitions. [2022-07-21 11:37:15,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 11:37:15,962 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 168 [2022-07-21 11:37:15,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:37:16,101 INFO L225 Difference]: With dead ends: 102069 [2022-07-21 11:37:16,102 INFO L226 Difference]: Without dead ends: 36250 [2022-07-21 11:37:16,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:37:16,252 INFO L413 NwaCegarLoop]: 1477 mSDtfsCounter, 2007 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 821 mSolverCounterSat, 1117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2239 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 1938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1117 IncrementalHoareTripleChecker+Valid, 821 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:37:16,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2239 Valid, 2792 Invalid, 1938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1117 Valid, 821 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-21 11:37:16,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36250 states. [2022-07-21 11:37:17,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36250 to 33206. [2022-07-21 11:37:17,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33206 states, 23692 states have (on average 1.308754009792335) internal successors, (31007), 24019 states have internal predecessors, (31007), 6754 states have call successors, (6754), 2835 states have call predecessors, (6754), 2759 states have return successors, (6876), 6479 states have call predecessors, (6876), 6748 states have call successors, (6876) [2022-07-21 11:37:17,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33206 states to 33206 states and 44637 transitions. [2022-07-21 11:37:17,501 INFO L78 Accepts]: Start accepts. Automaton has 33206 states and 44637 transitions. Word has length 168 [2022-07-21 11:37:17,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:37:17,502 INFO L495 AbstractCegarLoop]: Abstraction has 33206 states and 44637 transitions. [2022-07-21 11:37:17,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (24), 5 states have call predecessors, (24), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 11:37:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 33206 states and 44637 transitions. [2022-07-21 11:37:17,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-21 11:37:17,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:37:17,511 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:37:17,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 11:37:17,511 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:37:17,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:37:17,512 INFO L85 PathProgramCache]: Analyzing trace with hash 493906124, now seen corresponding path program 1 times [2022-07-21 11:37:17,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:37:17,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434345021] [2022-07-21 11:37:17,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:37:17,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:37:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:37:17,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:37:17,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:37:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:37:17,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:37:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:37:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:37:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:37:17,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:37:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:37:17,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:37:17,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:37:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:37:17,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:37:17,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:37:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:37:17,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:37:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:37:17,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-21 11:37:17,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-21 11:37:17,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:17,872 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 612 trivial. 0 not checked. [2022-07-21 11:37:17,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:37:17,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434345021] [2022-07-21 11:37:17,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434345021] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:37:17,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:37:17,873 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:37:17,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696843035] [2022-07-21 11:37:17,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:37:17,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:37:17,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:37:17,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:37:17,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:37:17,875 INFO L87 Difference]: Start difference. First operand 33206 states and 44637 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 11:37:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:37:25,870 INFO L93 Difference]: Finished difference Result 87867 states and 118951 transitions. [2022-07-21 11:37:25,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:37:25,871 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 162 [2022-07-21 11:37:25,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:37:26,071 INFO L225 Difference]: With dead ends: 87867 [2022-07-21 11:37:26,072 INFO L226 Difference]: Without dead ends: 54745 [2022-07-21 11:37:26,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:37:26,150 INFO L413 NwaCegarLoop]: 2043 mSDtfsCounter, 2158 mSDsluCounter, 2820 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 1200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2420 SdHoareTripleChecker+Valid, 4863 SdHoareTripleChecker+Invalid, 3149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:37:26,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2420 Valid, 4863 Invalid, 3149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-21 11:37:26,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54745 states. [2022-07-21 11:37:27,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54745 to 50112. [2022-07-21 11:37:27,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50112 states, 35796 states have (on average 1.3069896077774052) internal successors, (46785), 36407 states have internal predecessors, (46785), 10096 states have call successors, (10096), 4211 states have call predecessors, (10096), 4219 states have return successors, (10410), 9685 states have call predecessors, (10410), 10090 states have call successors, (10410) [2022-07-21 11:37:27,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50112 states to 50112 states and 67291 transitions. [2022-07-21 11:37:27,865 INFO L78 Accepts]: Start accepts. Automaton has 50112 states and 67291 transitions. Word has length 162 [2022-07-21 11:37:27,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:37:27,866 INFO L495 AbstractCegarLoop]: Abstraction has 50112 states and 67291 transitions. [2022-07-21 11:37:27,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2022-07-21 11:37:27,866 INFO L276 IsEmpty]: Start isEmpty. Operand 50112 states and 67291 transitions. [2022-07-21 11:37:27,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-21 11:37:27,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:37:27,872 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:37:27,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 11:37:27,872 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:37:27,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:37:27,873 INFO L85 PathProgramCache]: Analyzing trace with hash -581554432, now seen corresponding path program 1 times [2022-07-21 11:37:27,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:37:27,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121711359] [2022-07-21 11:37:27,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:37:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:37:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:37:28,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:37:28,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:37:28,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:37:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:37:28,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:37:28,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:37:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:37:28,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:37:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:37:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:37:28,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:37:28,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:37:28,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:37:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:37:28,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:37:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:37:28,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:37:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 11:37:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 11:37:28,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:28,242 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2022-07-21 11:37:28,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:37:28,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121711359] [2022-07-21 11:37:28,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121711359] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:37:28,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:37:28,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 11:37:28,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33222273] [2022-07-21 11:37:28,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:37:28,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 11:37:28,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:37:28,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 11:37:28,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 11:37:28,245 INFO L87 Difference]: Start difference. First operand 50112 states and 67291 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 11:37:33,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:37:33,690 INFO L93 Difference]: Finished difference Result 104741 states and 141377 transitions. [2022-07-21 11:37:33,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:37:33,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 161 [2022-07-21 11:37:33,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:37:33,923 INFO L225 Difference]: With dead ends: 104741 [2022-07-21 11:37:33,923 INFO L226 Difference]: Without dead ends: 54713 [2022-07-21 11:37:34,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:37:34,053 INFO L413 NwaCegarLoop]: 1885 mSDtfsCounter, 1756 mSDsluCounter, 2519 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 830 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1946 SdHoareTripleChecker+Valid, 4404 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 830 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-21 11:37:34,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1946 Valid, 4404 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [830 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-21 11:37:34,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54713 states. [2022-07-21 11:37:35,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54713 to 49113. [2022-07-21 11:37:35,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49113 states, 35304 states have (on average 1.3063958758214367) internal successors, (46121), 35626 states have internal predecessors, (46121), 9732 states have call successors, (9732), 4103 states have call predecessors, (9732), 4076 states have return successors, (9667), 9575 states have call predecessors, (9667), 9667 states have call successors, (9667) [2022-07-21 11:37:35,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49113 states to 49113 states and 65520 transitions. [2022-07-21 11:37:35,666 INFO L78 Accepts]: Start accepts. Automaton has 49113 states and 65520 transitions. Word has length 161 [2022-07-21 11:37:35,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:37:35,666 INFO L495 AbstractCegarLoop]: Abstraction has 49113 states and 65520 transitions. [2022-07-21 11:37:35,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-21 11:37:35,667 INFO L276 IsEmpty]: Start isEmpty. Operand 49113 states and 65520 transitions. [2022-07-21 11:37:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-21 11:37:35,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:37:35,677 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:37:35,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-21 11:37:35,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:37:35,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:37:35,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1103771543, now seen corresponding path program 1 times [2022-07-21 11:37:35,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:37:35,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855221650] [2022-07-21 11:37:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:37:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:37:35,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:37:35,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:37:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:37:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:37:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:37:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:37:35,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:37:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:37:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:37:35,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:37:35,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:37:35,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:37:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:37:35,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:37:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:37:35,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:37:35,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:35,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:37:36,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:36,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:37:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:36,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-21 11:37:36,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:36,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-21 11:37:36,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:36,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:37:36,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:36,043 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 614 trivial. 0 not checked. [2022-07-21 11:37:36,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:37:36,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855221650] [2022-07-21 11:37:36,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855221650] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:37:36,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:37:36,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:37:36,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392908682] [2022-07-21 11:37:36,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:37:36,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:37:36,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:37:36,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:37:36,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:37:36,046 INFO L87 Difference]: Start difference. First operand 49113 states and 65520 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:37:42,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:37:42,369 INFO L93 Difference]: Finished difference Result 53097 states and 71203 transitions. [2022-07-21 11:37:42,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 11:37:42,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 171 [2022-07-21 11:37:42,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:37:42,564 INFO L225 Difference]: With dead ends: 53097 [2022-07-21 11:37:42,564 INFO L226 Difference]: Without dead ends: 53094 [2022-07-21 11:37:42,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 45 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-21 11:37:42,594 INFO L413 NwaCegarLoop]: 1540 mSDtfsCounter, 1230 mSDsluCounter, 2336 mSDsCounter, 0 mSdLazyCounter, 2216 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1388 SdHoareTripleChecker+Valid, 3876 SdHoareTripleChecker+Invalid, 2951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-21 11:37:42,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1388 Valid, 3876 Invalid, 2951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [735 Valid, 2216 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-21 11:37:42,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53094 states. [2022-07-21 11:37:43,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53094 to 49112. [2022-07-21 11:37:44,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49112 states, 35304 states have (on average 1.3041298436437798) internal successors, (46041), 35625 states have internal predecessors, (46041), 9731 states have call successors, (9731), 4103 states have call predecessors, (9731), 4076 states have return successors, (9667), 9575 states have call predecessors, (9667), 9667 states have call successors, (9667) [2022-07-21 11:37:44,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49112 states to 49112 states and 65439 transitions. [2022-07-21 11:37:44,171 INFO L78 Accepts]: Start accepts. Automaton has 49112 states and 65439 transitions. Word has length 171 [2022-07-21 11:37:44,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:37:44,172 INFO L495 AbstractCegarLoop]: Abstraction has 49112 states and 65439 transitions. [2022-07-21 11:37:44,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (24), 6 states have call predecessors, (24), 2 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-07-21 11:37:44,172 INFO L276 IsEmpty]: Start isEmpty. Operand 49112 states and 65439 transitions. [2022-07-21 11:37:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 11:37:44,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:37:44,221 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:37:44,222 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-21 11:37:44,222 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:37:44,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:37:44,222 INFO L85 PathProgramCache]: Analyzing trace with hash -857998908, now seen corresponding path program 1 times [2022-07-21 11:37:44,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:37:44,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716408286] [2022-07-21 11:37:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:37:44,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:37:44,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:37:44,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:37:44,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:37:44,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:37:44,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:37:44,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:37:44,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:37:44,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:37:44,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:37:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:37:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:37:44,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:37:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:37:44,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:37:44,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:37:44,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:37:44,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:37:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:37:44,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 11:37:44,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:37:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:37:44,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:37:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:37:44,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:37:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:37:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:44,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:44,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:37:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 11:37:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:44,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:44,638 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 636 trivial. 0 not checked. [2022-07-21 11:37:44,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:37:44,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716408286] [2022-07-21 11:37:44,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716408286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:37:44,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:37:44,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 11:37:44,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051515863] [2022-07-21 11:37:44,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:37:44,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 11:37:44,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:37:44,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 11:37:44,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:37:44,640 INFO L87 Difference]: Start difference. First operand 49112 states and 65439 transitions. Second operand has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (34), 5 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 11:37:50,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:37:50,170 INFO L93 Difference]: Finished difference Result 102192 states and 136534 transitions. [2022-07-21 11:37:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 11:37:50,171 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (34), 5 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 229 [2022-07-21 11:37:50,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:37:50,376 INFO L225 Difference]: With dead ends: 102192 [2022-07-21 11:37:50,376 INFO L226 Difference]: Without dead ends: 53128 [2022-07-21 11:37:50,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2022-07-21 11:37:50,477 INFO L413 NwaCegarLoop]: 1483 mSDtfsCounter, 762 mSDsluCounter, 3889 mSDsCounter, 0 mSdLazyCounter, 2977 mSolverCounterSat, 874 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 818 SdHoareTripleChecker+Valid, 5372 SdHoareTripleChecker+Invalid, 3851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 2977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:37:50,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [818 Valid, 5372 Invalid, 3851 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 2977 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-21 11:37:50,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53128 states. [2022-07-21 11:37:51,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53128 to 49115. [2022-07-21 11:37:52,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49115 states, 35307 states have (on average 1.3037641260939756) internal successors, (46032), 35628 states have internal predecessors, (46032), 9731 states have call successors, (9731), 4103 states have call predecessors, (9731), 4076 states have return successors, (9667), 9575 states have call predecessors, (9667), 9667 states have call successors, (9667) [2022-07-21 11:37:52,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49115 states to 49115 states and 65430 transitions. [2022-07-21 11:37:52,184 INFO L78 Accepts]: Start accepts. Automaton has 49115 states and 65430 transitions. Word has length 229 [2022-07-21 11:37:52,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:37:52,184 INFO L495 AbstractCegarLoop]: Abstraction has 49115 states and 65430 transitions. [2022-07-21 11:37:52,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.875) internal successors, (103), 5 states have internal predecessors, (103), 2 states have call successors, (34), 5 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 11:37:52,185 INFO L276 IsEmpty]: Start isEmpty. Operand 49115 states and 65430 transitions. [2022-07-21 11:37:52,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-07-21 11:37:52,230 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:37:52,230 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:37:52,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 11:37:52,231 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:37:52,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:37:52,231 INFO L85 PathProgramCache]: Analyzing trace with hash 588581958, now seen corresponding path program 1 times [2022-07-21 11:37:52,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:37:52,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146303474] [2022-07-21 11:37:52,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:37:52,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:37:52,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:37:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:37:52,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:37:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:37:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:37:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:37:52,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:37:52,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:37:52,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:37:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:37:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:37:52,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:37:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:37:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:37:52,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:37:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:37:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:37:52,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:37:52,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 11:37:52,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:37:52,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:37:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:37:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:37:52,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:37:52,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:37:52,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:52,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:52,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:37:52,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:52,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-21 11:37:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:37:52,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:37:52,696 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-21 11:37:52,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:37:52,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146303474] [2022-07-21 11:37:52,696 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146303474] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:37:52,696 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:37:52,697 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:37:52,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260905762] [2022-07-21 11:37:52,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:37:52,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:37:52,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:37:52,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:37:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:37:52,698 INFO L87 Difference]: Start difference. First operand 49115 states and 65430 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (34), 5 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 11:38:02,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:38:02,513 INFO L93 Difference]: Finished difference Result 132014 states and 185119 transitions. [2022-07-21 11:38:02,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:38:02,514 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (34), 5 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) Word has length 229 [2022-07-21 11:38:02,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:38:02,778 INFO L225 Difference]: With dead ends: 132014 [2022-07-21 11:38:02,779 INFO L226 Difference]: Without dead ends: 82983 [2022-07-21 11:38:02,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:38:02,892 INFO L413 NwaCegarLoop]: 2343 mSDtfsCounter, 1939 mSDsluCounter, 5517 mSDsCounter, 0 mSdLazyCounter, 3581 mSolverCounterSat, 866 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2166 SdHoareTripleChecker+Valid, 7860 SdHoareTripleChecker+Invalid, 4447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 866 IncrementalHoareTripleChecker+Valid, 3581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:38:02,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2166 Valid, 7860 Invalid, 4447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [866 Valid, 3581 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2022-07-21 11:38:02,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82983 states. [2022-07-21 11:38:04,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82983 to 49163. [2022-07-21 11:38:04,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49163 states, 35355 states have (on average 1.3026728892660162) internal successors, (46056), 35676 states have internal predecessors, (46056), 9731 states have call successors, (9731), 4103 states have call predecessors, (9731), 4076 states have return successors, (9667), 9575 states have call predecessors, (9667), 9667 states have call successors, (9667) [2022-07-21 11:38:05,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49163 states to 49163 states and 65454 transitions. [2022-07-21 11:38:05,123 INFO L78 Accepts]: Start accepts. Automaton has 49163 states and 65454 transitions. Word has length 229 [2022-07-21 11:38:05,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:38:05,124 INFO L495 AbstractCegarLoop]: Abstraction has 49163 states and 65454 transitions. [2022-07-21 11:38:05,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (34), 5 states have call predecessors, (34), 1 states have return successors, (32), 2 states have call predecessors, (32), 2 states have call successors, (32) [2022-07-21 11:38:05,124 INFO L276 IsEmpty]: Start isEmpty. Operand 49163 states and 65454 transitions. [2022-07-21 11:38:05,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2022-07-21 11:38:05,168 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:38:05,168 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:38:05,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 11:38:05,168 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:38:05,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:38:05,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1134293118, now seen corresponding path program 1 times [2022-07-21 11:38:05,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:38:05,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162645936] [2022-07-21 11:38:05,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:38:05,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:38:05,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:38:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:38:05,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:38:05,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:38:05,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:38:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:38:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:38:05,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:38:05,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:38:05,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:38:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:38:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:38:05,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:38:05,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:38:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:38:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:38:05,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:38:05,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:38:05,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 11:38:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:38:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:38:05,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:38:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:38:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:38:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:38:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:05,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:05,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:38:05,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:05,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:05,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 11:38:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:05,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:05,516 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-21 11:38:05,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:38:05,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162645936] [2022-07-21 11:38:05,518 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162645936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:38:05,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:38:05,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 11:38:05,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923377353] [2022-07-21 11:38:05,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:38:05,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 11:38:05,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:38:05,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 11:38:05,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-21 11:38:05,521 INFO L87 Difference]: Start difference. First operand 49163 states and 65454 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 5 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 11:38:12,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:38:12,410 INFO L93 Difference]: Finished difference Result 115078 states and 157377 transitions. [2022-07-21 11:38:12,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 11:38:12,410 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 5 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 235 [2022-07-21 11:38:12,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:38:12,603 INFO L225 Difference]: With dead ends: 115078 [2022-07-21 11:38:12,603 INFO L226 Difference]: Without dead ends: 65999 [2022-07-21 11:38:12,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-21 11:38:12,908 INFO L413 NwaCegarLoop]: 1984 mSDtfsCounter, 1103 mSDsluCounter, 3606 mSDsCounter, 0 mSdLazyCounter, 2381 mSolverCounterSat, 607 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 5590 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 607 IncrementalHoareTripleChecker+Valid, 2381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-21 11:38:12,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 5590 Invalid, 2988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [607 Valid, 2381 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-21 11:38:12,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65999 states. [2022-07-21 11:38:14,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65999 to 49211. [2022-07-21 11:38:14,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49211 states, 35379 states have (on average 1.30178919698126) internal successors, (46056), 35700 states have internal predecessors, (46056), 9755 states have call successors, (9755), 4103 states have call predecessors, (9755), 4076 states have return successors, (9691), 9599 states have call predecessors, (9691), 9691 states have call successors, (9691) [2022-07-21 11:38:14,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49211 states to 49211 states and 65502 transitions. [2022-07-21 11:38:14,680 INFO L78 Accepts]: Start accepts. Automaton has 49211 states and 65502 transitions. Word has length 235 [2022-07-21 11:38:14,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:38:14,681 INFO L495 AbstractCegarLoop]: Abstraction has 49211 states and 65502 transitions. [2022-07-21 11:38:14,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (35), 5 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 11:38:14,681 INFO L276 IsEmpty]: Start isEmpty. Operand 49211 states and 65502 transitions. [2022-07-21 11:38:14,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-07-21 11:38:14,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:38:14,717 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:38:14,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 11:38:14,717 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:38:14,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:38:14,718 INFO L85 PathProgramCache]: Analyzing trace with hash 935153718, now seen corresponding path program 1 times [2022-07-21 11:38:14,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:38:14,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179786268] [2022-07-21 11:38:14,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:38:14,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:38:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:38:14,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:38:14,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:38:14,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:38:14,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:38:14,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:38:14,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:38:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:38:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:38:14,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:38:14,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:38:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:38:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:38:14,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:38:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:14,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:38:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:38:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:38:15,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:38:15,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 11:38:15,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:38:15,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:38:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:38:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:38:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:38:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:38:15,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:15,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:38:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:15,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-21 11:38:15,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2022-07-21 11:38:15,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:38:15,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179786268] [2022-07-21 11:38:15,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179786268] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:38:15,099 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:38:15,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 11:38:15,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840387634] [2022-07-21 11:38:15,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:38:15,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 11:38:15,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:38:15,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 11:38:15,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-21 11:38:15,102 INFO L87 Difference]: Start difference. First operand 49211 states and 65502 transitions. Second operand has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (35), 5 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 11:38:25,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:38:25,418 INFO L93 Difference]: Finished difference Result 129365 states and 180684 transitions. [2022-07-21 11:38:25,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 11:38:25,419 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (35), 5 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) Word has length 239 [2022-07-21 11:38:25,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:38:25,696 INFO L225 Difference]: With dead ends: 129365 [2022-07-21 11:38:25,697 INFO L226 Difference]: Without dead ends: 80238 [2022-07-21 11:38:26,003 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-07-21 11:38:26,004 INFO L413 NwaCegarLoop]: 2228 mSDtfsCounter, 1844 mSDsluCounter, 5243 mSDsCounter, 0 mSdLazyCounter, 3514 mSolverCounterSat, 836 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 7471 SdHoareTripleChecker+Invalid, 4350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 836 IncrementalHoareTripleChecker+Valid, 3514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-21 11:38:26,004 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 7471 Invalid, 4350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [836 Valid, 3514 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-21 11:38:26,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80238 states. [2022-07-21 11:38:27,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80238 to 48691. [2022-07-21 11:38:27,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48691 states, 35055 states have (on average 1.300385109114249) internal successors, (45585), 35352 states have internal predecessors, (45585), 9632 states have call successors, (9632), 4030 states have call predecessors, (9632), 4003 states have return successors, (9569), 9500 states have call predecessors, (9569), 9569 states have call successors, (9569) [2022-07-21 11:38:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48691 states to 48691 states and 64786 transitions. [2022-07-21 11:38:27,964 INFO L78 Accepts]: Start accepts. Automaton has 48691 states and 64786 transitions. Word has length 239 [2022-07-21 11:38:27,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:38:27,965 INFO L495 AbstractCegarLoop]: Abstraction has 48691 states and 64786 transitions. [2022-07-21 11:38:27,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.571428571428571) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (35), 5 states have call predecessors, (35), 1 states have return successors, (33), 2 states have call predecessors, (33), 2 states have call successors, (33) [2022-07-21 11:38:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 48691 states and 64786 transitions. [2022-07-21 11:38:28,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-21 11:38:28,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:38:28,048 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:38:28,048 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 11:38:28,048 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:38:28,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:38:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash 2096937408, now seen corresponding path program 1 times [2022-07-21 11:38:28,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:38:28,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677796789] [2022-07-21 11:38:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:38:28,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:38:28,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:38:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:38:28,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:38:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:38:28,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:38:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:38:28,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:38:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:38:28,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:38:28,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:38:28,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:38:28,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:38:28,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:38:28,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:38:28,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:38:28,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:38:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:38:28,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:38:28,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 11:38:28,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:38:28,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:28,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:38:28,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:38:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:38:28,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:38:28,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:38:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:28,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:28,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:38:28,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 11:38:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 11:38:28,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 11:38:28,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-21 11:38:28,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:28,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 11:38:28,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-21 11:38:28,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-07-21 11:38:28,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 11:38:28,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-21 11:38:28,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-21 11:38:28,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:28,464 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2022-07-21 11:38:28,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:38:28,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677796789] [2022-07-21 11:38:28,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677796789] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:38:28,465 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:38:28,465 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 11:38:28,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529472610] [2022-07-21 11:38:28,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:38:28,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 11:38:28,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:38:28,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 11:38:28,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 11:38:28,467 INFO L87 Difference]: Start difference. First operand 48691 states and 64786 transitions. Second operand has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (43), 8 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 11:38:37,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:38:37,519 INFO L93 Difference]: Finished difference Result 105106 states and 140789 transitions. [2022-07-21 11:38:37,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 11:38:37,520 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (43), 8 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 307 [2022-07-21 11:38:37,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:38:37,686 INFO L225 Difference]: With dead ends: 105106 [2022-07-21 11:38:37,686 INFO L226 Difference]: Without dead ends: 56499 [2022-07-21 11:38:37,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2022-07-21 11:38:37,781 INFO L413 NwaCegarLoop]: 1467 mSDtfsCounter, 1604 mSDsluCounter, 3332 mSDsCounter, 0 mSdLazyCounter, 2590 mSolverCounterSat, 1962 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1650 SdHoareTripleChecker+Valid, 4799 SdHoareTripleChecker+Invalid, 4552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1962 IncrementalHoareTripleChecker+Valid, 2590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-07-21 11:38:37,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1650 Valid, 4799 Invalid, 4552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1962 Valid, 2590 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-07-21 11:38:37,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56499 states. [2022-07-21 11:38:39,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56499 to 49291. [2022-07-21 11:38:39,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49291 states, 35631 states have (on average 1.3009177401700767) internal successors, (46353), 35928 states have internal predecessors, (46353), 9656 states have call successors, (9656), 4030 states have call predecessors, (9656), 4003 states have return successors, (9593), 9524 states have call predecessors, (9593), 9593 states have call successors, (9593) [2022-07-21 11:38:39,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49291 states to 49291 states and 65602 transitions. [2022-07-21 11:38:39,696 INFO L78 Accepts]: Start accepts. Automaton has 49291 states and 65602 transitions. Word has length 307 [2022-07-21 11:38:39,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:38:39,696 INFO L495 AbstractCegarLoop]: Abstraction has 49291 states and 65602 transitions. [2022-07-21 11:38:39,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 16.666666666666668) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (43), 8 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 11:38:39,697 INFO L276 IsEmpty]: Start isEmpty. Operand 49291 states and 65602 transitions. [2022-07-21 11:38:39,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-21 11:38:39,764 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:38:39,764 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:38:39,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-21 11:38:39,764 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:38:39,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:38:39,765 INFO L85 PathProgramCache]: Analyzing trace with hash 836020158, now seen corresponding path program 1 times [2022-07-21 11:38:39,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:38:39,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789727288] [2022-07-21 11:38:39,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:38:39,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:38:40,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:38:40,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:38:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:38:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:38:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:38:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:38:40,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:38:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:38:40,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:38:40,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:38:40,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:38:40,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:38:40,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:38:40,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:38:40,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:38:40,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:38:40,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:38:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:38:40,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 11:38:40,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:38:40,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:40,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:38:40,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:38:40,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:38:40,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:38:40,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:38:40,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:38:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:40,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 11:38:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 11:38:40,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 11:38:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-21 11:38:40,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:38:40,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 11:38:40,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-21 11:38:40,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-07-21 11:38:40,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 11:38:40,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-21 11:38:40,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-21 11:38:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:38:40,492 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2022-07-21 11:38:40,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:38:40,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789727288] [2022-07-21 11:38:40,493 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789727288] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:38:40,493 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 11:38:40,493 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-21 11:38:40,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000217229] [2022-07-21 11:38:40,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:38:40,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-21 11:38:40,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:38:40,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-21 11:38:40,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 11:38:40,496 INFO L87 Difference]: Start difference. First operand 49291 states and 65602 transitions. Second operand has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (43), 8 states have call predecessors, (43), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 11:39:03,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:39:03,094 INFO L93 Difference]: Finished difference Result 151919 states and 203408 transitions. [2022-07-21 11:39:03,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-21 11:39:03,095 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (43), 8 states have call predecessors, (43), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 307 [2022-07-21 11:39:03,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:39:03,441 INFO L225 Difference]: With dead ends: 151919 [2022-07-21 11:39:03,442 INFO L226 Difference]: Without dead ends: 102712 [2022-07-21 11:39:03,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2022-07-21 11:39:03,550 INFO L413 NwaCegarLoop]: 2769 mSDtfsCounter, 3220 mSDsluCounter, 9445 mSDsCounter, 0 mSdLazyCounter, 8428 mSolverCounterSat, 2536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3385 SdHoareTripleChecker+Valid, 12214 SdHoareTripleChecker+Invalid, 10964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2536 IncrementalHoareTripleChecker+Valid, 8428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2022-07-21 11:39:03,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3385 Valid, 12214 Invalid, 10964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2536 Valid, 8428 Invalid, 0 Unknown, 0 Unchecked, 18.6s Time] [2022-07-21 11:39:03,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102712 states. [2022-07-21 11:39:07,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102712 to 88772. [2022-07-21 11:39:07,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88772 states, 64071 states have (on average 1.297357618891542) internal successors, (83123), 64611 states have internal predecessors, (83123), 17476 states have call successors, (17476), 7251 states have call predecessors, (17476), 7224 states have return successors, (17413), 17245 states have call predecessors, (17413), 17413 states have call successors, (17413) [2022-07-21 11:39:07,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88772 states to 88772 states and 118012 transitions. [2022-07-21 11:39:07,508 INFO L78 Accepts]: Start accepts. Automaton has 88772 states and 118012 transitions. Word has length 307 [2022-07-21 11:39:07,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 11:39:07,509 INFO L495 AbstractCegarLoop]: Abstraction has 88772 states and 118012 transitions. [2022-07-21 11:39:07,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.636363636363637) internal successors, (150), 5 states have internal predecessors, (150), 3 states have call successors, (43), 8 states have call predecessors, (43), 1 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 11:39:07,509 INFO L276 IsEmpty]: Start isEmpty. Operand 88772 states and 118012 transitions. [2022-07-21 11:39:07,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2022-07-21 11:39:07,608 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 11:39:07,608 INFO L195 NwaCegarLoop]: trace histogram [18, 18, 18, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 11:39:07,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-21 11:39:07,608 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 11:39:07,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 11:39:07,609 INFO L85 PathProgramCache]: Analyzing trace with hash -175097092, now seen corresponding path program 1 times [2022-07-21 11:39:07,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 11:39:07,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852952013] [2022-07-21 11:39:07,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:39:07,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 11:39:07,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 11:39:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 11:39:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 11:39:07,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-21 11:39:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 11:39:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 11:39:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-21 11:39:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-21 11:39:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 11:39:07,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 11:39:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-21 11:39:07,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-21 11:39:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-21 11:39:07,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 11:39:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 11:39:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-21 11:39:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-21 11:39:07,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 11:39:07,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-21 11:39:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-21 11:39:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:39:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-21 11:39:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-21 11:39:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-21 11:39:07,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-21 11:39:07,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-21 11:39:07,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:39:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:39:07,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:07,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-21 11:39:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:39:08,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-21 11:39:08,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-21 11:39:08,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-21 11:39:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2022-07-21 11:39:08,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 11:39:08,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-21 11:39:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2022-07-21 11:39:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2022-07-21 11:39:08,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2022-07-21 11:39:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2022-07-21 11:39:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 287 [2022-07-21 11:39:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 658 trivial. 0 not checked. [2022-07-21 11:39:08,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 11:39:08,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852952013] [2022-07-21 11:39:08,169 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852952013] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 11:39:08,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382542784] [2022-07-21 11:39:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 11:39:08,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 11:39:08,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 11:39:08,175 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 11:39:08,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 11:39:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 11:39:09,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 4967 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 11:39:09,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 11:39:09,603 INFO L134 CoverageAnalysis]: Checked inductivity of 672 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2022-07-21 11:39:09,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 11:39:09,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382542784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 11:39:09,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 11:39:09,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2022-07-21 11:39:09,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785579362] [2022-07-21 11:39:09,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 11:39:09,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 11:39:09,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 11:39:09,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 11:39:09,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:39:09,606 INFO L87 Difference]: Start difference. First operand 88772 states and 118012 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) [2022-07-21 11:39:13,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 11:39:13,049 INFO L93 Difference]: Finished difference Result 178276 states and 237164 transitions. [2022-07-21 11:39:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 11:39:13,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (43), 2 states have call predecessors, (43), 2 states have return successors, (40), 2 states have call predecessors, (40), 2 states have call successors, (40) Word has length 307 [2022-07-21 11:39:13,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 11:39:13,341 INFO L225 Difference]: With dead ends: 178276 [2022-07-21 11:39:13,341 INFO L226 Difference]: Without dead ends: 89588 [2022-07-21 11:39:13,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 396 GetRequests, 384 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-21 11:39:13,513 INFO L413 NwaCegarLoop]: 1562 mSDtfsCounter, 18 mSDsluCounter, 1553 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 3115 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 11:39:13,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 3115 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 11:39:13,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89588 states.