./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.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 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:37:34,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:37:34,188 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:37:34,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:37:34,231 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:37:34,233 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:37:34,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:37:34,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:37:34,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:37:34,243 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:37:34,244 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:37:34,246 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:37:34,246 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:37:34,248 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:37:34,249 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:37:34,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:37:34,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:37:34,254 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:37:34,256 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:37:34,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:37:34,263 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:37:34,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:37:34,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:37:34,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:37:34,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:37:34,274 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:37:34,274 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:37:34,275 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:37:34,276 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:37:34,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:37:34,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:37:34,277 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:37:34,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:37:34,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:37:34,280 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:37:34,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:37:34,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:37:34,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:37:34,283 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:37:34,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:37:34,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:37:34,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:37:34,287 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:37:34,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:37:34,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:37:34,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:37:34,316 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:37:34,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:37:34,317 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:37:34,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:37:34,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:37:34,317 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:37:34,318 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:37:34,319 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:37:34,319 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:37:34,319 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:37:34,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:37:34,319 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:37:34,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:37:34,320 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:37:34,320 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:37:34,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:37:34,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:37:34,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:37:34,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:37:34,321 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:37:34,321 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:37:34,321 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:37:34,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:37:34,322 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:37:34,322 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:37:34,322 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:37:34,322 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:37:34,323 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5c13092b5fe0ffbf7fbf1fe31d493be6a68ca2455b811b10fd7983ff470e432f [2022-07-22 23:37:34,578 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:37:34,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:37:34,601 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:37:34,602 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:37:34,602 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:37:34,604 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-07-22 23:37:34,662 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f056083bd/bf40c4d124ff40cdb1bf2521674f80cf/FLAG77086b3b0 [2022-07-22 23:37:35,399 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:37:35,400 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-07-22 23:37:35,439 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f056083bd/bf40c4d124ff40cdb1bf2521674f80cf/FLAG77086b3b0 [2022-07-22 23:37:35,667 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f056083bd/bf40c4d124ff40cdb1bf2521674f80cf [2022-07-22 23:37:35,669 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:37:35,670 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:37:35,673 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:37:35,673 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:37:35,676 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:37:35,676 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:37:35" (1/1) ... [2022-07-22 23:37:35,677 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ce26884 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:35, skipping insertion in model container [2022-07-22 23:37:35,678 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:37:35" (1/1) ... [2022-07-22 23:37:35,683 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:37:35,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:37:36,539 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2022-07-22 23:37:36,945 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:37:36,992 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:37:37,104 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-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i[108030,108043] [2022-07-22 23:37:37,380 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:37:37,511 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:37:37,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37 WrapperNode [2022-07-22 23:37:37,514 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:37:37,515 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:37:37,515 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:37:37,515 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:37:37,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:37,607 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:37,754 INFO L137 Inliner]: procedures = 178, calls = 1868, calls flagged for inlining = 81, calls inlined = 81, statements flattened = 3566 [2022-07-22 23:37:37,755 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:37:37,756 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:37:37,756 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:37:37,756 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:37:37,764 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:37,765 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:37,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:37,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:37,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:38,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:38,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:38,110 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:37:38,112 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:37:38,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:37:38,113 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:37:38,114 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (1/1) ... [2022-07-22 23:37:38,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:37:38,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:37:38,153 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) [2022-07-22 23:37:38,189 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-22 23:37:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-22 23:37:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:37:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_3 [2022-07-22 23:37:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_3 [2022-07-22 23:37:38,191 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_8 [2022-07-22 23:37:38,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_8 [2022-07-22 23:37:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_5 [2022-07-22 23:37:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_5 [2022-07-22 23:37:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_6 [2022-07-22 23:37:38,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_6 [2022-07-22 23:37:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:37:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:37:38,192 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-07-22 23:37:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-07-22 23:37:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:37:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:37:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:37:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_20 [2022-07-22 23:37:38,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_20 [2022-07-22 23:37:38,193 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-07-22 23:37:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-07-22 23:37:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:37:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:37:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-07-22 23:37:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-07-22 23:37:38,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:37:38,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:37:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-07-22 23:37:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-07-22 23:37:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2022-07-22 23:37:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2022-07-22 23:37:38,195 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-22 23:37:38,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~VOID [2022-07-22 23:37:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:37:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:37:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_resume [2022-07-22 23:37:38,196 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_resume [2022-07-22 23:37:38,196 INFO L130 BoogieDeclarations]: Found specification of procedure kstrdup [2022-07-22 23:37:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure kstrdup [2022-07-22 23:37:38,197 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2022-07-22 23:37:38,175 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 [2022-07-22 23:37:38,197 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2022-07-22 23:37:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_reset_resume [2022-07-22 23:37:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_reset_resume [2022-07-22 23:37:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:37:38,198 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-22 23:37:38,198 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-22 23:37:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:37:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:37:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2022-07-22 23:37:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2022-07-22 23:37:38,199 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:37:38,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:37:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-22 23:37:38,200 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-22 23:37:38,200 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:37:38,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:37:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:37:38,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-07-22 23:37:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-07-22 23:37:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_free_buffers [2022-07-22 23:37:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_free_buffers [2022-07-22 23:37:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_disconnect [2022-07-22 23:37:38,202 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_disconnect [2022-07-22 23:37:38,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_22 [2022-07-22 23:37:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_22 [2022-07-22 23:37:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:37:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-07-22 23:37:38,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-07-22 23:37:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:37:38,203 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:37:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-07-22 23:37:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-07-22 23:37:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2022-07-22 23:37:38,204 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2022-07-22 23:37:38,204 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:37:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-07-22 23:37:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:37:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:37:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:37:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2022-07-22 23:37:38,205 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_control_msg [2022-07-22 23:37:38,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_14 [2022-07-22 23:37:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_14 [2022-07-22 23:37:38,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_16 [2022-07-22 23:37:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_16 [2022-07-22 23:37:38,206 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2022-07-22 23:37:38,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2022-07-22 23:37:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_probe [2022-07-22 23:37:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_probe [2022-07-22 23:37:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:37:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure input_get_drvdata [2022-07-22 23:37:38,207 INFO L138 BoogieDeclarations]: Found implementation of procedure input_get_drvdata [2022-07-22 23:37:38,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:37:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure input_unregister_device [2022-07-22 23:37:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure input_unregister_device [2022-07-22 23:37:38,208 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_open [2022-07-22 23:37:38,208 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_open [2022-07-22 23:37:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_12 [2022-07-22 23:37:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_12 [2022-07-22 23:37:38,209 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:37:38,209 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:37:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-22 23:37:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-22 23:37:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-07-22 23:37:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-07-22 23:37:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_irq [2022-07-22 23:37:38,210 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_irq [2022-07-22 23:37:38,210 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:37:38,211 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:37:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_pkt [2022-07-22 23:37:38,211 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_pkt [2022-07-22 23:37:38,211 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-07-22 23:37:38,212 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-07-22 23:37:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2022-07-22 23:37:38,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2022-07-22 23:37:38,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-07-22 23:37:38,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-07-22 23:37:38,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:37:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure nexio_read_data [2022-07-22 23:37:38,215 INFO L138 BoogieDeclarations]: Found implementation of procedure nexio_read_data [2022-07-22 23:37:38,215 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-07-22 23:37:38,216 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-07-22 23:37:38,217 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:37:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:37:38,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:37:38,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:37:38,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:37:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_abs [2022-07-22 23:37:38,223 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_abs [2022-07-22 23:37:38,223 INFO L130 BoogieDeclarations]: Found specification of procedure usbtouch_process_multi [2022-07-22 23:37:38,224 INFO L138 BoogieDeclarations]: Found implementation of procedure usbtouch_process_multi [2022-07-22 23:37:38,747 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:37:38,749 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:37:38,933 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:37:41,029 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-07-22 23:37:41,789 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:37:41,808 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:37:41,808 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 23:37:41,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:37:41 BoogieIcfgContainer [2022-07-22 23:37:41,812 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:37:41,814 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:37:41,814 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:37:41,817 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:37:41,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:37:35" (1/3) ... [2022-07-22 23:37:41,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afea3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:37:41, skipping insertion in model container [2022-07-22 23:37:41,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:37:37" (2/3) ... [2022-07-22 23:37:41,818 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7afea3dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:37:41, skipping insertion in model container [2022-07-22 23:37:41,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:37:41" (3/3) ... [2022-07-22 23:37:41,819 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--input--touchscreen--usbtouchscreen.ko-entry_point.cil.out.i [2022-07-22 23:37:41,832 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:37:41,833 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:37:41,912 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:37:41,921 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@30652eab, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@9c59ffb [2022-07-22 23:37:41,922 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:37:41,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 969 states, 704 states have (on average 1.359375) internal successors, (957), 723 states have internal predecessors, (957), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) [2022-07-22 23:37:41,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-07-22 23:37:41,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:37:41,941 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:37:41,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:37:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:37:41,948 INFO L85 PathProgramCache]: Analyzing trace with hash -84985716, now seen corresponding path program 1 times [2022-07-22 23:37:41,956 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:37:41,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306807555] [2022-07-22 23:37:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:37:41,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:37:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:42,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:37:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:37:42,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:42,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-22 23:37:42,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:37:42,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306807555] [2022-07-22 23:37:42,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306807555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:37:42,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:37:42,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:37:42,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085175404] [2022-07-22 23:37:42,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:37:42,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:37:42,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:37:42,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:37:42,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:37:42,672 INFO L87 Difference]: Start difference. First operand has 969 states, 704 states have (on average 1.359375) internal successors, (957), 723 states have internal predecessors, (957), 207 states have call successors, (207), 58 states have call predecessors, (207), 56 states have return successors, (201), 199 states have call predecessors, (201), 201 states have call successors, (201) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:37:51,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:37:51,016 INFO L93 Difference]: Finished difference Result 3568 states and 5311 transitions. [2022-07-22 23:37:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:37:51,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-07-22 23:37:51,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:37:51,050 INFO L225 Difference]: With dead ends: 3568 [2022-07-22 23:37:51,050 INFO L226 Difference]: Without dead ends: 2580 [2022-07-22 23:37:51,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:37:51,065 INFO L413 NwaCegarLoop]: 1554 mSDtfsCounter, 3150 mSDsluCounter, 2151 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 1579 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3330 SdHoareTripleChecker+Valid, 3705 SdHoareTripleChecker+Invalid, 3885 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1579 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:37:51,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3330 Valid, 3705 Invalid, 3885 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1579 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2022-07-22 23:37:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2580 states. [2022-07-22 23:37:51,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2580 to 1879. [2022-07-22 23:37:51,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1375 states have (on average 1.3447272727272728) internal successors, (1849), 1392 states have internal predecessors, (1849), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2022-07-22 23:37:51,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2629 transitions. [2022-07-22 23:37:51,290 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2629 transitions. Word has length 28 [2022-07-22 23:37:51,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:37:51,291 INFO L495 AbstractCegarLoop]: Abstraction has 1879 states and 2629 transitions. [2022-07-22 23:37:51,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-22 23:37:51,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2629 transitions. [2022-07-22 23:37:51,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 23:37:51,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:37:51,300 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:37:51,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:37:51,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:37:51,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:37:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash 818955978, now seen corresponding path program 1 times [2022-07-22 23:37:51,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:37:51,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868275077] [2022-07-22 23:37:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:37:51,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:37:51,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:37:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:51,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:37:51,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:37:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:51,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:37:51,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:37:51,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868275077] [2022-07-22 23:37:51,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868275077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:37:51,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:37:51,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:37:51,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221832452] [2022-07-22 23:37:51,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:37:51,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:37:51,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:37:51,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:37:51,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:37:51,548 INFO L87 Difference]: Start difference. First operand 1879 states and 2629 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:37:57,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:37:57,042 INFO L93 Difference]: Finished difference Result 2603 states and 3754 transitions. [2022-07-22 23:37:57,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:37:57,043 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-07-22 23:37:57,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:37:57,057 INFO L225 Difference]: With dead ends: 2603 [2022-07-22 23:37:57,058 INFO L226 Difference]: Without dead ends: 2590 [2022-07-22 23:37:57,060 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:37:57,061 INFO L413 NwaCegarLoop]: 1216 mSDtfsCounter, 2274 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 1023 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2400 SdHoareTripleChecker+Valid, 2229 SdHoareTripleChecker+Invalid, 2098 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1023 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:37:57,062 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2400 Valid, 2229 Invalid, 2098 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1023 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-22 23:37:57,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2590 states. [2022-07-22 23:37:57,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2590 to 1879. [2022-07-22 23:37:57,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1879 states, 1375 states have (on average 1.344) internal successors, (1848), 1392 states have internal predecessors, (1848), 393 states have call successors, (393), 111 states have call predecessors, (393), 110 states have return successors, (387), 383 states have call predecessors, (387), 387 states have call successors, (387) [2022-07-22 23:37:57,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 2628 transitions. [2022-07-22 23:37:57,167 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 2628 transitions. Word has length 38 [2022-07-22 23:37:57,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:37:57,168 INFO L495 AbstractCegarLoop]: Abstraction has 1879 states and 2628 transitions. [2022-07-22 23:37:57,168 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:37:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 2628 transitions. [2022-07-22 23:37:57,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-07-22 23:37:57,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:37:57,173 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:37:57,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:37:57,173 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:37:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:37:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash 876214280, now seen corresponding path program 1 times [2022-07-22 23:37:57,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:37:57,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671229388] [2022-07-22 23:37:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:37:57,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:37:57,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:57,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:37:57,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:37:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:37:57,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:37:57,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:37:57,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:37:57,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671229388] [2022-07-22 23:37:57,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671229388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:37:57,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:37:57,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:37:57,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790617076] [2022-07-22 23:37:57,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:37:57,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:37:57,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:37:57,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:37:57,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:37:57,478 INFO L87 Difference]: Start difference. First operand 1879 states and 2628 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:05,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:05,119 INFO L93 Difference]: Finished difference Result 7002 states and 10466 transitions. [2022-07-22 23:38:05,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:38:05,120 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-07-22 23:38:05,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:05,157 INFO L225 Difference]: With dead ends: 7002 [2022-07-22 23:38:05,158 INFO L226 Difference]: Without dead ends: 5137 [2022-07-22 23:38:05,172 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:38:05,173 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 3234 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 1623 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 3652 SdHoareTripleChecker+Invalid, 3953 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1623 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:05,173 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3396 Valid, 3652 Invalid, 3953 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1623 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-22 23:38:05,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5137 states. [2022-07-22 23:38:05,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5137 to 4286. [2022-07-22 23:38:05,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4286 states, 3139 states have (on average 1.3284485504937877) internal successors, (4170), 3172 states have internal predecessors, (4170), 851 states have call successors, (851), 220 states have call predecessors, (851), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-07-22 23:38:05,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4286 states to 4286 states and 6232 transitions. [2022-07-22 23:38:05,479 INFO L78 Accepts]: Start accepts. Automaton has 4286 states and 6232 transitions. Word has length 38 [2022-07-22 23:38:05,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:05,480 INFO L495 AbstractCegarLoop]: Abstraction has 4286 states and 6232 transitions. [2022-07-22 23:38:05,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand 4286 states and 6232 transitions. [2022-07-22 23:38:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 23:38:05,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:05,484 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:05,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-22 23:38:05,484 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:05,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:05,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1392341914, now seen corresponding path program 1 times [2022-07-22 23:38:05,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:05,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195031564] [2022-07-22 23:38:05,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:05,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:05,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:05,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:05,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:38:05,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:05,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:38:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:05,762 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:38:05,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:05,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195031564] [2022-07-22 23:38:05,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195031564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:05,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:05,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:38:05,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188171134] [2022-07-22 23:38:05,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:05,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:38:05,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:05,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:38:05,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:38:05,765 INFO L87 Difference]: Start difference. First operand 4286 states and 6232 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:10,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:10,809 INFO L93 Difference]: Finished difference Result 5128 states and 7662 transitions. [2022-07-22 23:38:10,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:38:10,810 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-22 23:38:10,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:10,905 INFO L225 Difference]: With dead ends: 5128 [2022-07-22 23:38:10,906 INFO L226 Difference]: Without dead ends: 5125 [2022-07-22 23:38:10,910 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:38:10,912 INFO L413 NwaCegarLoop]: 1184 mSDtfsCounter, 2262 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1063 mSolverCounterSat, 1024 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2389 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 2087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1024 IncrementalHoareTripleChecker+Valid, 1063 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:10,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2389 Valid, 2158 Invalid, 2087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1024 Valid, 1063 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-22 23:38:10,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5125 states. [2022-07-22 23:38:11,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5125 to 4285. [2022-07-22 23:38:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4285 states, 3139 states have (on average 1.3281299776999045) internal successors, (4169), 3171 states have internal predecessors, (4169), 850 states have call successors, (850), 220 states have call predecessors, (850), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-07-22 23:38:11,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4285 states to 4285 states and 6230 transitions. [2022-07-22 23:38:11,157 INFO L78 Accepts]: Start accepts. Automaton has 4285 states and 6230 transitions. Word has length 39 [2022-07-22 23:38:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:11,159 INFO L495 AbstractCegarLoop]: Abstraction has 4285 states and 6230 transitions. [2022-07-22 23:38:11,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 4285 states and 6230 transitions. [2022-07-22 23:38:11,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-07-22 23:38:11,161 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:11,161 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:38:11,161 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:11,162 INFO L85 PathProgramCache]: Analyzing trace with hash 212434251, now seen corresponding path program 1 times [2022-07-22 23:38:11,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:11,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737216373] [2022-07-22 23:38:11,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:11,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:11,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:11,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:38:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:11,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:38:11,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:11,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:38:11,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:11,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737216373] [2022-07-22 23:38:11,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737216373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:11,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:11,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:38:11,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657097465] [2022-07-22 23:38:11,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:11,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:38:11,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:11,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:38:11,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:38:11,421 INFO L87 Difference]: Start difference. First operand 4285 states and 6230 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:16,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:16,022 INFO L93 Difference]: Finished difference Result 5127 states and 7660 transitions. [2022-07-22 23:38:16,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:38:16,022 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-07-22 23:38:16,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:16,056 INFO L225 Difference]: With dead ends: 5127 [2022-07-22 23:38:16,056 INFO L226 Difference]: Without dead ends: 5124 [2022-07-22 23:38:16,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:38:16,063 INFO L413 NwaCegarLoop]: 1188 mSDtfsCounter, 2228 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 1084 mSolverCounterSat, 1012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2355 SdHoareTripleChecker+Valid, 2181 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1012 IncrementalHoareTripleChecker+Valid, 1084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:16,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2355 Valid, 2181 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1012 Valid, 1084 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-22 23:38:16,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5124 states. [2022-07-22 23:38:16,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5124 to 4284. [2022-07-22 23:38:16,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4284 states, 3139 states have (on average 1.327811404906021) internal successors, (4168), 3170 states have internal predecessors, (4168), 849 states have call successors, (849), 220 states have call predecessors, (849), 295 states have return successors, (1211), 909 states have call predecessors, (1211), 845 states have call successors, (1211) [2022-07-22 23:38:16,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4284 states to 4284 states and 6228 transitions. [2022-07-22 23:38:16,314 INFO L78 Accepts]: Start accepts. Automaton has 4284 states and 6228 transitions. Word has length 40 [2022-07-22 23:38:16,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:16,314 INFO L495 AbstractCegarLoop]: Abstraction has 4284 states and 6228 transitions. [2022-07-22 23:38:16,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:16,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4284 states and 6228 transitions. [2022-07-22 23:38:16,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-07-22 23:38:16,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:16,317 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:16,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:38:16,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:16,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:16,318 INFO L85 PathProgramCache]: Analyzing trace with hash -2004960067, now seen corresponding path program 1 times [2022-07-22 23:38:16,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:16,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496677137] [2022-07-22 23:38:16,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:16,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:16,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:16,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:38:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:16,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:38:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:16,563 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:38:16,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:16,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496677137] [2022-07-22 23:38:16,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496677137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:16,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:16,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:38:16,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913660444] [2022-07-22 23:38:16,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:16,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:38:16,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:16,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:38:16,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:38:16,569 INFO L87 Difference]: Start difference. First operand 4284 states and 6228 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:23,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:23,337 INFO L93 Difference]: Finished difference Result 14467 states and 22170 transitions. [2022-07-22 23:38:23,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:38:23,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-07-22 23:38:23,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:23,398 INFO L225 Difference]: With dead ends: 14467 [2022-07-22 23:38:23,399 INFO L226 Difference]: Without dead ends: 10197 [2022-07-22 23:38:23,428 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:38:23,429 INFO L413 NwaCegarLoop]: 1417 mSDtfsCounter, 3183 mSDsluCounter, 2196 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 1597 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3346 SdHoareTripleChecker+Valid, 3613 SdHoareTripleChecker+Invalid, 3804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1597 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:23,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3346 Valid, 3613 Invalid, 3804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1597 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-22 23:38:23,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10197 states. [2022-07-22 23:38:23,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10197 to 8775. [2022-07-22 23:38:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8775 states, 6431 states have (on average 1.3276317835484372) internal successors, (8538), 6491 states have internal predecessors, (8538), 1726 states have call successors, (1726), 435 states have call predecessors, (1726), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2022-07-22 23:38:23,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8775 states to 8775 states and 13177 transitions. [2022-07-22 23:38:23,932 INFO L78 Accepts]: Start accepts. Automaton has 8775 states and 13177 transitions. Word has length 41 [2022-07-22 23:38:23,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:23,934 INFO L495 AbstractCegarLoop]: Abstraction has 8775 states and 13177 transitions. [2022-07-22 23:38:23,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:23,934 INFO L276 IsEmpty]: Start isEmpty. Operand 8775 states and 13177 transitions. [2022-07-22 23:38:23,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-07-22 23:38:23,937 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:23,937 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:23,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:38:23,938 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:23,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:23,938 INFO L85 PathProgramCache]: Analyzing trace with hash -2024702322, now seen corresponding path program 1 times [2022-07-22 23:38:23,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:23,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341183348] [2022-07-22 23:38:23,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:23,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:38:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:38:24,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-22 23:38:24,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:24,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341183348] [2022-07-22 23:38:24,198 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341183348] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:24,198 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:24,198 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 23:38:24,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747383739] [2022-07-22 23:38:24,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:24,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:38:24,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:38:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 23:38:24,200 INFO L87 Difference]: Start difference. First operand 8775 states and 13177 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:28,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:28,688 INFO L93 Difference]: Finished difference Result 10165 states and 15561 transitions. [2022-07-22 23:38:28,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:38:28,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-07-22 23:38:28,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:28,741 INFO L225 Difference]: With dead ends: 10165 [2022-07-22 23:38:28,741 INFO L226 Difference]: Without dead ends: 10153 [2022-07-22 23:38:28,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:38:28,750 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 2201 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1085 mSolverCounterSat, 1001 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 2224 SdHoareTripleChecker+Invalid, 2086 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 1085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:28,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2328 Valid, 2224 Invalid, 2086 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1001 Valid, 1085 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-22 23:38:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10153 states. [2022-07-22 23:38:29,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10153 to 8765. [2022-07-22 23:38:29,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8765 states, 6422 states have (on average 1.3274680784802242) internal successors, (8525), 6481 states have internal predecessors, (8525), 1725 states have call successors, (1725), 435 states have call predecessors, (1725), 617 states have return successors, (2913), 1880 states have call predecessors, (2913), 1719 states have call successors, (2913) [2022-07-22 23:38:29,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8765 states to 8765 states and 13163 transitions. [2022-07-22 23:38:29,227 INFO L78 Accepts]: Start accepts. Automaton has 8765 states and 13163 transitions. Word has length 42 [2022-07-22 23:38:29,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:29,228 INFO L495 AbstractCegarLoop]: Abstraction has 8765 states and 13163 transitions. [2022-07-22 23:38:29,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:38:29,228 INFO L276 IsEmpty]: Start isEmpty. Operand 8765 states and 13163 transitions. [2022-07-22 23:38:29,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-22 23:38:29,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:29,235 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:29,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:38:29,235 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:29,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:29,236 INFO L85 PathProgramCache]: Analyzing trace with hash -8229079, now seen corresponding path program 1 times [2022-07-22 23:38:29,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:29,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348453363] [2022-07-22 23:38:29,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:29,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:29,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:38:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:38:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-22 23:38:29,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:38:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 23:38:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 23:38:29,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:29,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:29,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-22 23:38:29,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:29,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348453363] [2022-07-22 23:38:29,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348453363] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:29,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:29,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:38:29,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355616547] [2022-07-22 23:38:29,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:29,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:38:29,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:29,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:38:29,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:38:29,515 INFO L87 Difference]: Start difference. First operand 8765 states and 13163 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:38:36,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:36,488 INFO L93 Difference]: Finished difference Result 21687 states and 33736 transitions. [2022-07-22 23:38:36,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-22 23:38:36,488 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 88 [2022-07-22 23:38:36,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:36,558 INFO L225 Difference]: With dead ends: 21687 [2022-07-22 23:38:36,558 INFO L226 Difference]: Without dead ends: 12936 [2022-07-22 23:38:36,606 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:38:36,607 INFO L413 NwaCegarLoop]: 1284 mSDtfsCounter, 2688 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 1817 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2811 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 4301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1817 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:36,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2811 Valid, 4223 Invalid, 4301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1817 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-07-22 23:38:36,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12936 states. [2022-07-22 23:38:37,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12936 to 10735. [2022-07-22 23:38:37,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10735 states, 7852 states have (on average 1.3136780438104942) internal successors, (10315), 7905 states have internal predecessors, (10315), 2063 states have call successors, (2063), 437 states have call predecessors, (2063), 819 states have return successors, (4329), 2428 states have call predecessors, (4329), 2057 states have call successors, (4329) [2022-07-22 23:38:37,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10735 states to 10735 states and 16707 transitions. [2022-07-22 23:38:37,318 INFO L78 Accepts]: Start accepts. Automaton has 10735 states and 16707 transitions. Word has length 88 [2022-07-22 23:38:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:37,319 INFO L495 AbstractCegarLoop]: Abstraction has 10735 states and 16707 transitions. [2022-07-22 23:38:37,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-22 23:38:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 10735 states and 16707 transitions. [2022-07-22 23:38:37,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-22 23:38:37,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:37,327 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:37,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-22 23:38:37,327 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:37,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:37,328 INFO L85 PathProgramCache]: Analyzing trace with hash 799970071, now seen corresponding path program 1 times [2022-07-22 23:38:37,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:37,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404313424] [2022-07-22 23:38:37,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:37,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:38:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:38:37,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-22 23:38:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 23:38:37,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 23:38:37,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:38:37,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:37,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 23:38:37,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:37,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-22 23:38:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:37,669 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-22 23:38:37,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:37,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404313424] [2022-07-22 23:38:37,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404313424] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:37,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:37,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:38:37,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122409725] [2022-07-22 23:38:37,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:37,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:38:37,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:37,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:38:37,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:38:37,672 INFO L87 Difference]: Start difference. First operand 10735 states and 16707 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 23:38:52,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:38:52,585 INFO L93 Difference]: Finished difference Result 37936 states and 60057 transitions. [2022-07-22 23:38:52,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 23:38:52,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 124 [2022-07-22 23:38:52,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:38:52,762 INFO L225 Difference]: With dead ends: 37936 [2022-07-22 23:38:52,762 INFO L226 Difference]: Without dead ends: 27223 [2022-07-22 23:38:52,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2022-07-22 23:38:52,918 INFO L413 NwaCegarLoop]: 2056 mSDtfsCounter, 4179 mSDsluCounter, 4277 mSDsCounter, 0 mSdLazyCounter, 4591 mSolverCounterSat, 3331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4392 SdHoareTripleChecker+Valid, 6333 SdHoareTripleChecker+Invalid, 7922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3331 IncrementalHoareTripleChecker+Valid, 4591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:38:52,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4392 Valid, 6333 Invalid, 7922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3331 Valid, 4591 Invalid, 0 Unknown, 0 Unchecked, 13.4s Time] [2022-07-22 23:38:52,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27223 states. [2022-07-22 23:38:54,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27223 to 21177. [2022-07-22 23:38:54,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21177 states, 15468 states have (on average 1.3100594776312386) internal successors, (20264), 15579 states have internal predecessors, (20264), 4061 states have call successors, (4061), 865 states have call predecessors, (4061), 1647 states have return successors, (8447), 4804 states have call predecessors, (8447), 4055 states have call successors, (8447) [2022-07-22 23:38:54,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21177 states to 21177 states and 32772 transitions. [2022-07-22 23:38:54,433 INFO L78 Accepts]: Start accepts. Automaton has 21177 states and 32772 transitions. Word has length 124 [2022-07-22 23:38:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:38:54,433 INFO L495 AbstractCegarLoop]: Abstraction has 21177 states and 32772 transitions. [2022-07-22 23:38:54,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 3 states have internal predecessors, (84), 3 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-22 23:38:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 21177 states and 32772 transitions. [2022-07-22 23:38:54,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-22 23:38:54,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:38:54,447 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:38:54,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-22 23:38:54,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:38:54,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:38:54,449 INFO L85 PathProgramCache]: Analyzing trace with hash -2029654657, now seen corresponding path program 1 times [2022-07-22 23:38:54,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:38:54,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462249812] [2022-07-22 23:38:54,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:38:54,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:38:54,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:54,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:38:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:38:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:38:54,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:54,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:54,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:38:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 23:38:54,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 23:38:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:38:54,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 23:38:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-22 23:38:54,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:38:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 23:38:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:38:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:38:54,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 23:38:54,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:38:54,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462249812] [2022-07-22 23:38:54,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462249812] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:38:54,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:38:54,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 23:38:54,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327953256] [2022-07-22 23:38:54,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:38:54,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:38:54,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:38:54,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:38:54,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:38:54,896 INFO L87 Difference]: Start difference. First operand 21177 states and 32772 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (20), 9 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 23:39:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:39:26,087 INFO L93 Difference]: Finished difference Result 84210 states and 147708 transitions. [2022-07-22 23:39:26,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 23:39:26,088 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (20), 9 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-07-22 23:39:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:39:26,588 INFO L225 Difference]: With dead ends: 84210 [2022-07-22 23:39:26,589 INFO L226 Difference]: Without dead ends: 63055 [2022-07-22 23:39:26,736 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=443, Invalid=1537, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 23:39:26,737 INFO L413 NwaCegarLoop]: 2410 mSDtfsCounter, 7256 mSDsluCounter, 11865 mSDsCounter, 0 mSdLazyCounter, 15473 mSolverCounterSat, 7381 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7457 SdHoareTripleChecker+Valid, 14275 SdHoareTripleChecker+Invalid, 22854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7381 IncrementalHoareTripleChecker+Valid, 15473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:39:26,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7457 Valid, 14275 Invalid, 22854 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7381 Valid, 15473 Invalid, 0 Unknown, 0 Unchecked, 26.6s Time] [2022-07-22 23:39:26,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63055 states. [2022-07-22 23:39:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63055 to 23093. [2022-07-22 23:39:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23093 states, 16748 states have (on average 1.3061858132314306) internal successors, (21876), 16799 states have internal predecessors, (21876), 4601 states have call successors, (4601), 865 states have call predecessors, (4601), 1743 states have return successors, (9767), 5508 states have call predecessors, (9767), 4595 states have call successors, (9767) [2022-07-22 23:39:29,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23093 states to 23093 states and 36244 transitions. [2022-07-22 23:39:29,747 INFO L78 Accepts]: Start accepts. Automaton has 23093 states and 36244 transitions. Word has length 145 [2022-07-22 23:39:29,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:39:29,747 INFO L495 AbstractCegarLoop]: Abstraction has 23093 states and 36244 transitions. [2022-07-22 23:39:29,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 4 states have internal predecessors, (103), 2 states have call successors, (20), 9 states have call predecessors, (20), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 23:39:29,748 INFO L276 IsEmpty]: Start isEmpty. Operand 23093 states and 36244 transitions. [2022-07-22 23:39:29,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-22 23:39:29,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:39:29,756 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-22 23:39:29,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 23:39:29,757 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:39:29,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:39:29,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1462780120, now seen corresponding path program 1 times [2022-07-22 23:39:29,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:39:29,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243257924] [2022-07-22 23:39:29,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:39:29,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:39:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:29,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:39:29,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:29,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:39:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:29,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:39:29,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:39:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:39:30,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:39:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 23:39:30,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:39:30,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:39:30,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-22 23:39:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:39:30,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 23:39:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:39:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-22 23:39:30,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:39:30,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243257924] [2022-07-22 23:39:30,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243257924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:39:30,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:39:30,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 23:39:30,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104162841] [2022-07-22 23:39:30,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:39:30,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 23:39:30,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:39:30,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 23:39:30,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:39:30,134 INFO L87 Difference]: Start difference. First operand 23093 states and 36244 transitions. Second operand has 8 states, 8 states have (on average 12.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 23:39:51,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:39:51,498 INFO L93 Difference]: Finished difference Result 73065 states and 118617 transitions. [2022-07-22 23:39:51,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 23:39:51,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 137 [2022-07-22 23:39:51,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:39:51,850 INFO L225 Difference]: With dead ends: 73065 [2022-07-22 23:39:51,850 INFO L226 Difference]: Without dead ends: 49994 [2022-07-22 23:39:52,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=263, Unknown=0, NotChecked=0, Total=380 [2022-07-22 23:39:52,153 INFO L413 NwaCegarLoop]: 2263 mSDtfsCounter, 3519 mSDsluCounter, 6198 mSDsCounter, 0 mSdLazyCounter, 6583 mSolverCounterSat, 2327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3733 SdHoareTripleChecker+Valid, 8461 SdHoareTripleChecker+Invalid, 8910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2327 IncrementalHoareTripleChecker+Valid, 6583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:39:52,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3733 Valid, 8461 Invalid, 8910 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2327 Valid, 6583 Invalid, 0 Unknown, 0 Unchecked, 17.5s Time] [2022-07-22 23:39:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49994 states. [2022-07-22 23:39:54,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49994 to 34437. [2022-07-22 23:39:54,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34437 states, 24964 states have (on average 1.3055199487261657) internal successors, (32591), 25039 states have internal predecessors, (32591), 6865 states have call successors, (6865), 1293 states have call predecessors, (6865), 2607 states have return successors, (14493), 8224 states have call predecessors, (14493), 6859 states have call successors, (14493) [2022-07-22 23:39:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34437 states to 34437 states and 53949 transitions. [2022-07-22 23:39:54,764 INFO L78 Accepts]: Start accepts. Automaton has 34437 states and 53949 transitions. Word has length 137 [2022-07-22 23:39:54,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:39:54,765 INFO L495 AbstractCegarLoop]: Abstraction has 34437 states and 53949 transitions. [2022-07-22 23:39:54,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.0) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-22 23:39:54,765 INFO L276 IsEmpty]: Start isEmpty. Operand 34437 states and 53949 transitions. [2022-07-22 23:39:54,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-22 23:39:54,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:39:54,775 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-07-22 23:39:54,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:39:54,775 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:39:54,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:39:54,776 INFO L85 PathProgramCache]: Analyzing trace with hash -100167631, now seen corresponding path program 1 times [2022-07-22 23:39:54,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:39:54,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402889862] [2022-07-22 23:39:54,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:39:54,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:39:54,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:54,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:39:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:54,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:39:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:54,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:39:54,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:39:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:39:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:39:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:39:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 23:39:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:39:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 23:39:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-22 23:39:55,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 23:39:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:39:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:39:55,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:39:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:39:55,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-22 23:39:55,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:39:55,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402889862] [2022-07-22 23:39:55,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402889862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:39:55,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:39:55,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 23:39:55,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951616413] [2022-07-22 23:39:55,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:39:55,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:39:55,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:39:55,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:39:55,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:39:55,146 INFO L87 Difference]: Start difference. First operand 34437 states and 53949 transitions. Second operand has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:39:58,174 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:39:59,529 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:40:31,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:40:31,289 INFO L93 Difference]: Finished difference Result 118352 states and 206832 transitions. [2022-07-22 23:40:31,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-07-22 23:40:31,290 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 143 [2022-07-22 23:40:31,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:40:31,904 INFO L225 Difference]: With dead ends: 118352 [2022-07-22 23:40:31,904 INFO L226 Difference]: Without dead ends: 83937 [2022-07-22 23:40:32,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=443, Invalid=1537, Unknown=0, NotChecked=0, Total=1980 [2022-07-22 23:40:32,072 INFO L413 NwaCegarLoop]: 2456 mSDtfsCounter, 8516 mSDsluCounter, 11798 mSDsCounter, 0 mSdLazyCounter, 14891 mSolverCounterSat, 9367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8721 SdHoareTripleChecker+Valid, 14254 SdHoareTripleChecker+Invalid, 24258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9367 IncrementalHoareTripleChecker+Valid, 14891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 28.8s IncrementalHoareTripleChecker+Time [2022-07-22 23:40:32,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8721 Valid, 14254 Invalid, 24258 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9367 Valid, 14891 Invalid, 0 Unknown, 0 Unchecked, 28.8s Time] [2022-07-22 23:40:32,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83937 states. [2022-07-22 23:40:35,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83937 to 34437. [2022-07-22 23:40:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34437 states, 24964 states have (on average 1.3055199487261657) internal successors, (32591), 25039 states have internal predecessors, (32591), 6865 states have call successors, (6865), 1293 states have call predecessors, (6865), 2607 states have return successors, (14493), 8224 states have call predecessors, (14493), 6859 states have call successors, (14493) [2022-07-22 23:40:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34437 states to 34437 states and 53949 transitions. [2022-07-22 23:40:35,900 INFO L78 Accepts]: Start accepts. Automaton has 34437 states and 53949 transitions. Word has length 143 [2022-07-22 23:40:35,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:40:35,901 INFO L495 AbstractCegarLoop]: Abstraction has 34437 states and 53949 transitions. [2022-07-22 23:40:35,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (19), 9 states have call predecessors, (19), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:40:35,902 INFO L276 IsEmpty]: Start isEmpty. Operand 34437 states and 53949 transitions. [2022-07-22 23:40:35,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 23:40:35,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:40:35,909 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:40:35,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 23:40:35,909 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:40:35,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:40:35,910 INFO L85 PathProgramCache]: Analyzing trace with hash -1956184300, now seen corresponding path program 1 times [2022-07-22 23:40:35,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:40:35,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394606538] [2022-07-22 23:40:35,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:40:35,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:40:36,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:40:36,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:40:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:40:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:40:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:36,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:36,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:40:36,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:36,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 23:40:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:36,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:40:36,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:40:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:36,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:40:36,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:40:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:40:36,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:40:36,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:40:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:36,347 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 23:40:36,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:40:36,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394606538] [2022-07-22 23:40:36,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [394606538] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:40:36,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772248909] [2022-07-22 23:40:36,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:40:36,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:40:36,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:40:36,354 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) [2022-07-22 23:40:36,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 23:40:37,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:37,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 3514 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 23:40:37,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:40:37,370 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 23:40:37,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:40:37,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772248909] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:40:37,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:40:37,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-07-22 23:40:37,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564008508] [2022-07-22 23:40:37,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:40:37,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:40:37,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:40:37,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:40:37,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:40:37,373 INFO L87 Difference]: Start difference. First operand 34437 states and 53949 transitions. Second operand has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:40:40,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:40:40,999 INFO L93 Difference]: Finished difference Result 81119 states and 127134 transitions. [2022-07-22 23:40:41,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:40:41,000 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 169 [2022-07-22 23:40:41,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:40:41,202 INFO L225 Difference]: With dead ends: 81119 [2022-07-22 23:40:41,202 INFO L226 Difference]: Without dead ends: 46704 [2022-07-22 23:40:41,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-07-22 23:40:41,319 INFO L413 NwaCegarLoop]: 2587 mSDtfsCounter, 1346 mSDsluCounter, 8869 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1363 SdHoareTripleChecker+Valid, 11456 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:40:41,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1363 Valid, 11456 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 23:40:41,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46704 states. [2022-07-22 23:40:43,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46704 to 34505. [2022-07-22 23:40:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34505 states, 25004 states have (on average 1.3050311950087985) internal successors, (32631), 25083 states have internal predecessors, (32631), 6889 states have call successors, (6889), 1293 states have call predecessors, (6889), 2611 states have return successors, (14533), 8248 states have call predecessors, (14533), 6883 states have call successors, (14533) [2022-07-22 23:40:44,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34505 states to 34505 states and 54053 transitions. [2022-07-22 23:40:44,131 INFO L78 Accepts]: Start accepts. Automaton has 34505 states and 54053 transitions. Word has length 169 [2022-07-22 23:40:44,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:40:44,132 INFO L495 AbstractCegarLoop]: Abstraction has 34505 states and 54053 transitions. [2022-07-22 23:40:44,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.166666666666668) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:40:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 34505 states and 54053 transitions. [2022-07-22 23:40:44,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 23:40:44,135 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:40:44,135 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:40:44,167 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 23:40:44,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-22 23:40:44,352 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:40:44,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:40:44,352 INFO L85 PathProgramCache]: Analyzing trace with hash 1327665746, now seen corresponding path program 1 times [2022-07-22 23:40:44,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:40:44,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619912725] [2022-07-22 23:40:44,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:40:44,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:40:44,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:40:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:40:44,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:40:44,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:40:44,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:44,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:44,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:40:44,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:44,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 23:40:44,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:44,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:44,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:40:44,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:40:44,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:44,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:40:44,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:40:44,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:40:44,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:40:44,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:40:44,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:44,966 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-22 23:40:44,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:40:44,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619912725] [2022-07-22 23:40:44,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619912725] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:40:44,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525259859] [2022-07-22 23:40:44,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:40:44,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:40:44,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:40:44,973 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:40:44,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 23:40:45,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:45,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 3509 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-22 23:40:45,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:40:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-22 23:40:45,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:40:45,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525259859] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:40:45,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:40:45,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-07-22 23:40:45,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673618090] [2022-07-22 23:40:45,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:40:45,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:40:45,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:40:45,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:40:45,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:40:45,838 INFO L87 Difference]: Start difference. First operand 34505 states and 54053 transitions. Second operand has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 23:40:48,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:40:48,596 INFO L93 Difference]: Finished difference Result 69212 states and 115690 transitions. [2022-07-22 23:40:48,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 23:40:48,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 169 [2022-07-22 23:40:48,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:40:48,741 INFO L225 Difference]: With dead ends: 69212 [2022-07-22 23:40:48,741 INFO L226 Difference]: Without dead ends: 34729 [2022-07-22 23:40:48,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:40:48,891 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 5 mSDsluCounter, 5203 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 6513 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:40:48,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 6513 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 23:40:48,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34729 states. [2022-07-22 23:40:51,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34729 to 34505. [2022-07-22 23:40:51,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34505 states, 25004 states have (on average 1.3035914253719405) internal successors, (32595), 25083 states have internal predecessors, (32595), 6889 states have call successors, (6889), 1293 states have call predecessors, (6889), 2611 states have return successors, (14533), 8248 states have call predecessors, (14533), 6883 states have call successors, (14533) [2022-07-22 23:40:51,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34505 states to 34505 states and 54017 transitions. [2022-07-22 23:40:51,734 INFO L78 Accepts]: Start accepts. Automaton has 34505 states and 54017 transitions. Word has length 169 [2022-07-22 23:40:51,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:40:51,735 INFO L495 AbstractCegarLoop]: Abstraction has 34505 states and 54017 transitions. [2022-07-22 23:40:51,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-07-22 23:40:51,735 INFO L276 IsEmpty]: Start isEmpty. Operand 34505 states and 54017 transitions. [2022-07-22 23:40:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-22 23:40:51,738 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:40:51,738 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:40:51,767 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 23:40:51,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-22 23:40:51,963 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:40:51,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:40:51,964 INFO L85 PathProgramCache]: Analyzing trace with hash 483660244, now seen corresponding path program 1 times [2022-07-22 23:40:51,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:40:51,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185557567] [2022-07-22 23:40:51,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:40:51,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:40:52,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:40:52,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:40:52,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:40:52,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:40:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:52,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:40:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-22 23:40:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:40:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:40:52,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:40:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:40:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 23:40:52,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 23:40:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:40:52,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:40:52,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:52,437 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-22 23:40:52,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:40:52,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185557567] [2022-07-22 23:40:52,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185557567] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:40:52,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1246677371] [2022-07-22 23:40:52,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:40:52,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:40:52,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:40:52,440 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:40:52,442 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 23:40:53,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:40:53,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 3510 conjuncts, 47 conjunts are in the unsatisfiable core [2022-07-22 23:40:53,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:40:53,401 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 33 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-22 23:40:53,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:40:53,897 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 23:40:53,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1246677371] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:40:53,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:40:53,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10, 10] total 27 [2022-07-22 23:40:53,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043703175] [2022-07-22 23:40:53,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:40:53,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 23:40:53,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:40:53,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 23:40:53,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-07-22 23:40:53,901 INFO L87 Difference]: Start difference. First operand 34505 states and 54017 transitions. Second operand has 27 states, 27 states have (on average 6.222222222222222) internal successors, (168), 14 states have internal predecessors, (168), 4 states have call successors, (44), 8 states have call predecessors, (44), 9 states have return successors, (36), 11 states have call predecessors, (36), 4 states have call successors, (36) [2022-07-22 23:41:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:41:16,186 INFO L93 Difference]: Finished difference Result 82976 states and 142465 transitions. [2022-07-22 23:41:16,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 23:41:16,187 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 6.222222222222222) internal successors, (168), 14 states have internal predecessors, (168), 4 states have call successors, (44), 8 states have call predecessors, (44), 9 states have return successors, (36), 11 states have call predecessors, (36), 4 states have call successors, (36) Word has length 169 [2022-07-22 23:41:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:41:16,467 INFO L225 Difference]: With dead ends: 82976 [2022-07-22 23:41:16,467 INFO L226 Difference]: Without dead ends: 48445 [2022-07-22 23:41:16,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 233 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=195, Invalid=1287, Unknown=0, NotChecked=0, Total=1482 [2022-07-22 23:41:16,718 INFO L413 NwaCegarLoop]: 1180 mSDtfsCounter, 1963 mSDsluCounter, 13982 mSDsCounter, 0 mSdLazyCounter, 9399 mSolverCounterSat, 1429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2073 SdHoareTripleChecker+Valid, 15162 SdHoareTripleChecker+Invalid, 10828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1429 IncrementalHoareTripleChecker+Valid, 9399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:41:16,719 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2073 Valid, 15162 Invalid, 10828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1429 Valid, 9399 Invalid, 0 Unknown, 0 Unchecked, 17.7s Time] [2022-07-22 23:41:16,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48445 states. [2022-07-22 23:41:19,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48445 to 34841. [2022-07-22 23:41:19,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34841 states, 25244 states have (on average 1.300705118047853) internal successors, (32835), 25323 states have internal predecessors, (32835), 6913 states have call successors, (6913), 1293 states have call predecessors, (6913), 2683 states have return successors, (14917), 8344 states have call predecessors, (14917), 6907 states have call successors, (14917) [2022-07-22 23:41:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34841 states to 34841 states and 54665 transitions. [2022-07-22 23:41:19,699 INFO L78 Accepts]: Start accepts. Automaton has 34841 states and 54665 transitions. Word has length 169 [2022-07-22 23:41:19,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:41:19,700 INFO L495 AbstractCegarLoop]: Abstraction has 34841 states and 54665 transitions. [2022-07-22 23:41:19,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 6.222222222222222) internal successors, (168), 14 states have internal predecessors, (168), 4 states have call successors, (44), 8 states have call predecessors, (44), 9 states have return successors, (36), 11 states have call predecessors, (36), 4 states have call successors, (36) [2022-07-22 23:41:19,700 INFO L276 IsEmpty]: Start isEmpty. Operand 34841 states and 54665 transitions. [2022-07-22 23:41:19,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-07-22 23:41:19,704 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:41:19,704 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:41:19,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 23:41:19,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:41:19,932 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:41:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:41:19,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1819859532, now seen corresponding path program 1 times [2022-07-22 23:41:19,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:41:19,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111631275] [2022-07-22 23:41:19,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:41:19,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:41:20,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:41:20,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:41:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-22 23:41:20,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:41:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:41:20,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:41:20,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:41:20,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:41:20,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:41:20,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:41:20,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:41:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 23:41:20,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:41:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:41:20,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:41:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-22 23:41:20,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:41:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:41:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-22 23:41:20,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:41:20,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:41:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 23:41:20,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:41:20,366 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-22 23:41:20,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:41:20,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111631275] [2022-07-22 23:41:20,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111631275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:41:20,366 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:41:20,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 23:41:20,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660471357] [2022-07-22 23:41:20,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:41:20,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:41:20,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:41:20,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:41:20,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:41:20,369 INFO L87 Difference]: Start difference. First operand 34841 states and 54665 transitions. Second operand has 10 states, 10 states have (on average 10.8) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (20), 8 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19)