./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ff03de63 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.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 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ff03de6 [2021-12-21 16:23:29,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-21 16:23:29,327 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-21 16:23:29,370 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-21 16:23:29,370 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-21 16:23:29,371 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-21 16:23:29,372 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-21 16:23:29,373 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-21 16:23:29,374 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-21 16:23:29,375 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-21 16:23:29,376 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-21 16:23:29,376 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-21 16:23:29,377 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-21 16:23:29,377 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-21 16:23:29,378 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-21 16:23:29,379 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-21 16:23:29,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-21 16:23:29,380 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-21 16:23:29,381 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-21 16:23:29,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-21 16:23:29,384 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-21 16:23:29,385 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-21 16:23:29,385 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-21 16:23:29,386 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-21 16:23:29,390 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-21 16:23:29,391 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-21 16:23:29,391 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-21 16:23:29,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-21 16:23:29,392 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-21 16:23:29,393 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-21 16:23:29,393 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-21 16:23:29,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-21 16:23:29,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-21 16:23:29,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-21 16:23:29,403 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-21 16:23:29,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-21 16:23:29,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-21 16:23:29,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-21 16:23:29,404 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-21 16:23:29,405 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-21 16:23:29,405 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-21 16:23:29,406 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-21 16:23:29,432 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-21 16:23:29,432 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-21 16:23:29,433 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-21 16:23:29,433 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-21 16:23:29,434 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-21 16:23:29,434 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-21 16:23:29,434 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-21 16:23:29,435 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-21 16:23:29,435 INFO L138 SettingsManager]: * Use SBE=true [2021-12-21 16:23:29,436 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-21 16:23:29,436 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-21 16:23:29,436 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-21 16:23:29,437 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-21 16:23:29,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-21 16:23:29,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-21 16:23:29,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-21 16:23:29,437 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-21 16:23:29,437 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-21 16:23:29,437 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-21 16:23:29,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-21 16:23:29,438 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-21 16:23:29,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:23:29,438 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-21 16:23:29,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-21 16:23:29,438 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-21 16:23:29,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-21 16:23:29,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-21 16:23:29,439 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-21 16:23:29,439 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-21 16:23:29,439 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-21 16:23:29,439 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-21 16:23:29,439 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8bd4d18c7774801c1dd2fcc01cd37afd9da2c99096cf08f4bd160d17156b286b [2021-12-21 16:23:29,618 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-21 16:23:29,629 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-21 16:23:29,645 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-21 16:23:29,646 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-21 16:23:29,647 INFO L275 PluginConnector]: CDTParser initialized [2021-12-21 16:23:29,648 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-21 16:23:29,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77358d48/070d9cccc87b40e1bcdda70d4adf6dca/FLAG1c6ec29e4 [2021-12-21 16:23:30,370 INFO L306 CDTParser]: Found 1 translation units. [2021-12-21 16:23:30,371 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-21 16:23:30,394 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77358d48/070d9cccc87b40e1bcdda70d4adf6dca/FLAG1c6ec29e4 [2021-12-21 16:23:30,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77358d48/070d9cccc87b40e1bcdda70d4adf6dca [2021-12-21 16:23:30,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-21 16:23:30,712 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-21 16:23:30,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-21 16:23:30,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-21 16:23:30,715 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-21 16:23:30,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:23:30" (1/1) ... [2021-12-21 16:23:30,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dd85996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:30, skipping insertion in model container [2021-12-21 16:23:30,716 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 04:23:30" (1/1) ... [2021-12-21 16:23:30,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-21 16:23:30,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-21 16:23:31,262 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-12-21 16:23:31,299 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:23:31,313 INFO L203 MainTranslator]: Completed pre-run [2021-12-21 16:23:31,404 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-validator-v0.8/linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i[113815,113828] [2021-12-21 16:23:31,410 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-21 16:23:31,428 INFO L208 MainTranslator]: Completed translation [2021-12-21 16:23:31,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31 WrapperNode [2021-12-21 16:23:31,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-21 16:23:31,429 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-21 16:23:31,429 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-21 16:23:31,429 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-21 16:23:31,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,449 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,504 INFO L137 Inliner]: procedures = 109, calls = 310, calls flagged for inlining = 49, calls inlined = 43, statements flattened = 770 [2021-12-21 16:23:31,504 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-21 16:23:31,505 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-21 16:23:31,505 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-21 16:23:31,505 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-21 16:23:31,510 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,511 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,517 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,517 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,534 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,537 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-21 16:23:31,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-21 16:23:31,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-21 16:23:31,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-21 16:23:31,543 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (1/1) ... [2021-12-21 16:23:31,548 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-21 16:23:31,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:23:31,566 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-21 16:23:31,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-21 16:23:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-21 16:23:31,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-21 16:23:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-21 16:23:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-21 16:23:31,611 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-21 16:23:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-21 16:23:31,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-21 16:23:31,611 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-21 16:23:31,612 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-21 16:23:31,612 INFO L130 BoogieDeclarations]: Found specification of procedure strlcat [2021-12-21 16:23:31,612 INFO L138 BoogieDeclarations]: Found implementation of procedure strlcat [2021-12-21 16:23:31,612 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-21 16:23:31,612 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-21 16:23:31,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-21 16:23:31,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-21 16:23:31,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-21 16:23:31,613 INFO L130 BoogieDeclarations]: Found specification of procedure usb_acecad_disconnect [2021-12-21 16:23:31,613 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_acecad_disconnect [2021-12-21 16:23:31,613 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-21 16:23:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-21 16:23:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-21 16:23:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-21 16:23:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-21 16:23:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-21 16:23:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-12-21 16:23:31,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-12-21 16:23:31,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-21 16:23:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure input_set_abs_params [2021-12-21 16:23:31,615 INFO L138 BoogieDeclarations]: Found implementation of procedure input_set_abs_params [2021-12-21 16:23:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_coherent [2021-12-21 16:23:31,615 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_coherent [2021-12-21 16:23:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_7 [2021-12-21 16:23:31,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_7 [2021-12-21 16:23:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-21 16:23:31,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-21 16:23:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-21 16:23:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-21 16:23:31,616 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-21 16:23:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-21 16:23:31,616 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-21 16:23:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-21 16:23:31,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-21 16:23:31,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-21 16:23:31,866 INFO L234 CfgBuilder]: Building ICFG [2021-12-21 16:23:31,868 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-21 16:23:31,923 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-21 16:23:32,461 INFO L275 CfgBuilder]: Performing block encoding [2021-12-21 16:23:32,497 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-21 16:23:32,498 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-21 16:23:32,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:23:32 BoogieIcfgContainer [2021-12-21 16:23:32,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-21 16:23:32,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-21 16:23:32,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-21 16:23:32,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-21 16:23:32,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 04:23:30" (1/3) ... [2021-12-21 16:23:32,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a70272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:23:32, skipping insertion in model container [2021-12-21 16:23:32,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 04:23:31" (2/3) ... [2021-12-21 16:23:32,517 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74a70272 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 04:23:32, skipping insertion in model container [2021-12-21 16:23:32,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 04:23:32" (3/3) ... [2021-12-21 16:23:32,519 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-stable-a450319-1-144_1a-drivers--input--tablet--acecad.ko-entry_point_ldv-val-v0.8.cil.out.i [2021-12-21 16:23:32,523 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-21 16:23:32,523 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-21 16:23:32,589 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-21 16:23:32,601 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-21 16:23:32,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-21 16:23:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 184 states have internal predecessors, (227), 43 states have call successors, (43), 16 states have call predecessors, (43), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2021-12-21 16:23:32,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-21 16:23:32,652 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:32,653 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:23:32,654 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:32,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1664570800, now seen corresponding path program 1 times [2021-12-21 16:23:32,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:32,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737226520] [2021-12-21 16:23:32,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:32,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:32,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:32,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:32,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:32,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:32,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:23:32,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:32,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737226520] [2021-12-21 16:23:32,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737226520] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:32,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:32,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-21 16:23:32,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488827815] [2021-12-21 16:23:32,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:32,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:23:32,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:32,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:23:32,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:23:32,990 INFO L87 Difference]: Start difference. First operand has 233 states, 173 states have (on average 1.3121387283236994) internal successors, (227), 184 states have internal predecessors, (227), 43 states have call successors, (43), 16 states have call predecessors, (43), 15 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:23:33,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:33,254 INFO L93 Difference]: Finished difference Result 468 states and 636 transitions. [2021-12-21 16:23:33,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:23:33,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 32 [2021-12-21 16:23:33,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:33,265 INFO L225 Difference]: With dead ends: 468 [2021-12-21 16:23:33,265 INFO L226 Difference]: Without dead ends: 229 [2021-12-21 16:23:33,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-21 16:23:33,285 INFO L933 BasicCegarLoop]: 293 mSDtfsCounter, 90 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:33,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 457 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 16:23:33,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2021-12-21 16:23:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 222. [2021-12-21 16:23:33,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 168 states have (on average 1.2797619047619047) internal successors, (215), 173 states have internal predecessors, (215), 39 states have call successors, (39), 15 states have call predecessors, (39), 14 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-12-21 16:23:33,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 289 transitions. [2021-12-21 16:23:33,338 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 289 transitions. Word has length 32 [2021-12-21 16:23:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:33,338 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 289 transitions. [2021-12-21 16:23:33,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:23:33,338 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 289 transitions. [2021-12-21 16:23:33,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-12-21 16:23:33,340 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:33,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:23:33,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-21 16:23:33,340 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:33,341 INFO L85 PathProgramCache]: Analyzing trace with hash -1241868974, now seen corresponding path program 1 times [2021-12-21 16:23:33,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:33,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066044862] [2021-12-21 16:23:33,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:33,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:33,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:33,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:33,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:33,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-21 16:23:33,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:33,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066044862] [2021-12-21 16:23:33,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066044862] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:33,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:33,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:23:33,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137649055] [2021-12-21 16:23:33,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:33,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:23:33,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:33,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:23:33,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:23:33,429 INFO L87 Difference]: Start difference. First operand 222 states and 289 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:23:33,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:33,976 INFO L93 Difference]: Finished difference Result 646 states and 850 transitions. [2021-12-21 16:23:33,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:23:33,976 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 4 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 32 [2021-12-21 16:23:33,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:33,984 INFO L225 Difference]: With dead ends: 646 [2021-12-21 16:23:33,984 INFO L226 Difference]: Without dead ends: 429 [2021-12-21 16:23:33,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:23:33,991 INFO L933 BasicCegarLoop]: 316 mSDtfsCounter, 312 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 257 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 257 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:33,991 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [347 Valid, 847 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 257 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-21 16:23:33,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-21 16:23:34,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 415. [2021-12-21 16:23:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 415 states, 314 states have (on average 1.2738853503184713) internal successors, (400), 321 states have internal predecessors, (400), 72 states have call successors, (72), 29 states have call predecessors, (72), 28 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-21 16:23:34,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415 states to 415 states and 540 transitions. [2021-12-21 16:23:34,033 INFO L78 Accepts]: Start accepts. Automaton has 415 states and 540 transitions. Word has length 32 [2021-12-21 16:23:34,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:34,033 INFO L470 AbstractCegarLoop]: Abstraction has 415 states and 540 transitions. [2021-12-21 16:23:34,033 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (4), 4 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2021-12-21 16:23:34,034 INFO L276 IsEmpty]: Start isEmpty. Operand 415 states and 540 transitions. [2021-12-21 16:23:34,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 16:23:34,035 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:34,035 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:23:34,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-21 16:23:34,036 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:34,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:34,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1658921169, now seen corresponding path program 1 times [2021-12-21 16:23:34,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:34,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206365626] [2021-12-21 16:23:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:34,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:34,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:34,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:34,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:34,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:34,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:34,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,206 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-21 16:23:34,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:34,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206365626] [2021-12-21 16:23:34,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206365626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:34,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:34,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:23:34,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207623022] [2021-12-21 16:23:34,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:34,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:23:34,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:34,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:23:34,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:23:34,210 INFO L87 Difference]: Start difference. First operand 415 states and 540 transitions. Second operand has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 16:23:34,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:34,741 INFO L93 Difference]: Finished difference Result 980 states and 1316 transitions. [2021-12-21 16:23:34,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-21 16:23:34,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2021-12-21 16:23:34,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:34,745 INFO L225 Difference]: With dead ends: 980 [2021-12-21 16:23:34,745 INFO L226 Difference]: Without dead ends: 580 [2021-12-21 16:23:34,746 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:23:34,747 INFO L933 BasicCegarLoop]: 447 mSDtfsCounter, 608 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1558 SdHoareTripleChecker+Invalid, 523 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:34,747 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 1558 Invalid, 523 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 16:23:34,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-12-21 16:23:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 418. [2021-12-21 16:23:34,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 418 states, 317 states have (on average 1.2681388012618298) internal successors, (402), 324 states have internal predecessors, (402), 72 states have call successors, (72), 29 states have call predecessors, (72), 28 states have return successors, (68), 68 states have call predecessors, (68), 68 states have call successors, (68) [2021-12-21 16:23:34,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 418 states to 418 states and 542 transitions. [2021-12-21 16:23:34,769 INFO L78 Accepts]: Start accepts. Automaton has 418 states and 542 transitions. Word has length 55 [2021-12-21 16:23:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:34,769 INFO L470 AbstractCegarLoop]: Abstraction has 418 states and 542 transitions. [2021-12-21 16:23:34,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.714285714285714) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2021-12-21 16:23:34,770 INFO L276 IsEmpty]: Start isEmpty. Operand 418 states and 542 transitions. [2021-12-21 16:23:34,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2021-12-21 16:23:34,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:34,771 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:23:34,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-21 16:23:34,772 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:34,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:34,772 INFO L85 PathProgramCache]: Analyzing trace with hash -1898729455, now seen corresponding path program 1 times [2021-12-21 16:23:34,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:34,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854694686] [2021-12-21 16:23:34,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:34,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:34,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:34,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:34,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:34,849 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-21 16:23:34,849 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:34,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854694686] [2021-12-21 16:23:34,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854694686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:34,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:34,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:23:34,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735902234] [2021-12-21 16:23:34,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:34,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:23:34,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:34,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:23:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:23:34,851 INFO L87 Difference]: Start difference. First operand 418 states and 542 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 16:23:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:35,349 INFO L93 Difference]: Finished difference Result 1245 states and 1635 transitions. [2021-12-21 16:23:35,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-21 16:23:35,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 55 [2021-12-21 16:23:35,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:35,353 INFO L225 Difference]: With dead ends: 1245 [2021-12-21 16:23:35,353 INFO L226 Difference]: Without dead ends: 842 [2021-12-21 16:23:35,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:23:35,355 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 312 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 993 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:35,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [346 Valid, 993 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 16:23:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 842 states. [2021-12-21 16:23:35,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 842 to 812. [2021-12-21 16:23:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 812 states, 620 states have (on average 1.2629032258064516) internal successors, (783), 631 states have internal predecessors, (783), 137 states have call successors, (137), 55 states have call predecessors, (137), 54 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-21 16:23:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1053 transitions. [2021-12-21 16:23:35,401 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1053 transitions. Word has length 55 [2021-12-21 16:23:35,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:35,401 INFO L470 AbstractCegarLoop]: Abstraction has 812 states and 1053 transitions. [2021-12-21 16:23:35,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 3 states have internal predecessors, (33), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 16:23:35,402 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1053 transitions. [2021-12-21 16:23:35,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-12-21 16:23:35,403 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:35,403 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:23:35,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-21 16:23:35,404 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:35,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:35,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1268938597, now seen corresponding path program 1 times [2021-12-21 16:23:35,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:35,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902585088] [2021-12-21 16:23:35,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:35,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:35,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:35,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:35,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:35,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:35,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-21 16:23:35,478 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:35,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902585088] [2021-12-21 16:23:35,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902585088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:35,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:35,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:23:35,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438571062] [2021-12-21 16:23:35,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:35,479 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:23:35,479 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:35,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:23:35,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:23:35,480 INFO L87 Difference]: Start difference. First operand 812 states and 1053 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 16:23:35,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:35,704 INFO L93 Difference]: Finished difference Result 842 states and 1102 transitions. [2021-12-21 16:23:35,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:23:35,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-12-21 16:23:35,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:35,708 INFO L225 Difference]: With dead ends: 842 [2021-12-21 16:23:35,708 INFO L226 Difference]: Without dead ends: 839 [2021-12-21 16:23:35,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:23:35,710 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 273 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:35,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 583 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 16:23:35,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 839 states. [2021-12-21 16:23:35,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 839 to 811. [2021-12-21 16:23:35,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 811 states, 620 states have (on average 1.261290322580645) internal successors, (782), 630 states have internal predecessors, (782), 136 states have call successors, (136), 55 states have call predecessors, (136), 54 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-21 16:23:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 811 states to 811 states and 1051 transitions. [2021-12-21 16:23:35,761 INFO L78 Accepts]: Start accepts. Automaton has 811 states and 1051 transitions. Word has length 56 [2021-12-21 16:23:35,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:35,761 INFO L470 AbstractCegarLoop]: Abstraction has 811 states and 1051 transitions. [2021-12-21 16:23:35,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 16:23:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 811 states and 1051 transitions. [2021-12-21 16:23:35,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-21 16:23:35,763 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:35,763 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:23:35,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-21 16:23:35,764 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:35,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:35,764 INFO L85 PathProgramCache]: Analyzing trace with hash 682405268, now seen corresponding path program 1 times [2021-12-21 16:23:35,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:35,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716609643] [2021-12-21 16:23:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:35,765 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:35,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:35,869 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-21 16:23:35,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:35,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716609643] [2021-12-21 16:23:35,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716609643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:35,870 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:35,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:23:35,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100485389] [2021-12-21 16:23:35,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:35,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:23:35,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:35,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:23:35,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:23:35,871 INFO L87 Difference]: Start difference. First operand 811 states and 1051 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 16:23:36,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:36,101 INFO L93 Difference]: Finished difference Result 841 states and 1100 transitions. [2021-12-21 16:23:36,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:23:36,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 57 [2021-12-21 16:23:36,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:36,104 INFO L225 Difference]: With dead ends: 841 [2021-12-21 16:23:36,104 INFO L226 Difference]: Without dead ends: 838 [2021-12-21 16:23:36,118 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:23:36,119 INFO L933 BasicCegarLoop]: 274 mSDtfsCounter, 270 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 179 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:36,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 579 Invalid, 179 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 16:23:36,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2021-12-21 16:23:36,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 810. [2021-12-21 16:23:36,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 810 states, 620 states have (on average 1.2596774193548388) internal successors, (781), 629 states have internal predecessors, (781), 135 states have call successors, (135), 55 states have call predecessors, (135), 54 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-21 16:23:36,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 810 states to 810 states and 1049 transitions. [2021-12-21 16:23:36,142 INFO L78 Accepts]: Start accepts. Automaton has 810 states and 1049 transitions. Word has length 57 [2021-12-21 16:23:36,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:36,142 INFO L470 AbstractCegarLoop]: Abstraction has 810 states and 1049 transitions. [2021-12-21 16:23:36,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 3 states have internal predecessors, (35), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 16:23:36,142 INFO L276 IsEmpty]: Start isEmpty. Operand 810 states and 1049 transitions. [2021-12-21 16:23:36,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-21 16:23:36,143 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:36,143 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-21 16:23:36,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-21 16:23:36,144 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:36,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash -320253880, now seen corresponding path program 1 times [2021-12-21 16:23:36,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:36,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213490776] [2021-12-21 16:23:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:36,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:36,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:36,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:36,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:36,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,219 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2021-12-21 16:23:36,226 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:36,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213490776] [2021-12-21 16:23:36,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213490776] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:36,227 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:36,227 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-21 16:23:36,227 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704752809] [2021-12-21 16:23:36,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:36,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:23:36,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:36,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:23:36,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-21 16:23:36,228 INFO L87 Difference]: Start difference. First operand 810 states and 1049 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 16:23:36,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:36,443 INFO L93 Difference]: Finished difference Result 840 states and 1098 transitions. [2021-12-21 16:23:36,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-21 16:23:36,444 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2021-12-21 16:23:36,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:36,447 INFO L225 Difference]: With dead ends: 840 [2021-12-21 16:23:36,447 INFO L226 Difference]: Without dead ends: 829 [2021-12-21 16:23:36,447 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:23:36,448 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 307 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:36,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 426 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 16:23:36,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2021-12-21 16:23:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 801. [2021-12-21 16:23:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 612 states have (on average 1.2581699346405228) internal successors, (770), 620 states have internal predecessors, (770), 134 states have call successors, (134), 55 states have call predecessors, (134), 54 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-21 16:23:36,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1037 transitions. [2021-12-21 16:23:36,473 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1037 transitions. Word has length 58 [2021-12-21 16:23:36,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:36,473 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1037 transitions. [2021-12-21 16:23:36,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 3 states have internal predecessors, (36), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-12-21 16:23:36,474 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1037 transitions. [2021-12-21 16:23:36,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-12-21 16:23:36,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:36,476 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2021-12-21 16:23:36,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-21 16:23:36,477 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:36,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:36,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1089358151, now seen corresponding path program 1 times [2021-12-21 16:23:36,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:36,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259926289] [2021-12-21 16:23:36,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:36,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:36,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:36,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:36,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-21 16:23:36,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-21 16:23:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-21 16:23:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-21 16:23:36,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-21 16:23:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:36,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-21 16:23:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-21 16:23:36,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-21 16:23:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-21 16:23:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:23:36,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:36,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:36,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:36,627 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-21 16:23:36,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:36,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259926289] [2021-12-21 16:23:36,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259926289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:36,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:36,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-21 16:23:36,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569181011] [2021-12-21 16:23:36,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:36,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-21 16:23:36,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:36,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-21 16:23:36,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-21 16:23:36,630 INFO L87 Difference]: Start difference. First operand 801 states and 1037 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:23:36,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:36,922 INFO L93 Difference]: Finished difference Result 1679 states and 2193 transitions. [2021-12-21 16:23:36,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:23:36,923 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 152 [2021-12-21 16:23:36,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:36,926 INFO L225 Difference]: With dead ends: 1679 [2021-12-21 16:23:36,926 INFO L226 Difference]: Without dead ends: 893 [2021-12-21 16:23:36,928 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-21 16:23:36,929 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 224 mSDsluCounter, 530 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:36,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 805 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-21 16:23:36,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2021-12-21 16:23:36,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 855. [2021-12-21 16:23:36,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 665 states have (on average 1.2691729323308272) internal successors, (844), 673 states have internal predecessors, (844), 134 states have call successors, (134), 56 states have call predecessors, (134), 55 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-21 16:23:36,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1111 transitions. [2021-12-21 16:23:36,955 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1111 transitions. Word has length 152 [2021-12-21 16:23:36,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:36,955 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1111 transitions. [2021-12-21 16:23:36,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:23:36,955 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1111 transitions. [2021-12-21 16:23:36,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-12-21 16:23:36,958 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:36,958 INFO L514 BasicCegarLoop]: 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, 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] [2021-12-21 16:23:36,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-21 16:23:36,959 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:36,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:36,959 INFO L85 PathProgramCache]: Analyzing trace with hash 1490878930, now seen corresponding path program 1 times [2021-12-21 16:23:36,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:36,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077798701] [2021-12-21 16:23:36,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:36,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:37,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:23:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-21 16:23:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-21 16:23:37,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-21 16:23:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-21 16:23:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-21 16:23:37,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 16:23:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-21 16:23:37,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-21 16:23:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,133 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-21 16:23:37,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:37,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077798701] [2021-12-21 16:23:37,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077798701] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:37,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:37,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-21 16:23:37,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264964974] [2021-12-21 16:23:37,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:37,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-21 16:23:37,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:37,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-21 16:23:37,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:23:37,136 INFO L87 Difference]: Start difference. First operand 855 states and 1111 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:23:37,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:37,501 INFO L93 Difference]: Finished difference Result 2289 states and 3072 transitions. [2021-12-21 16:23:37,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:23:37,502 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 161 [2021-12-21 16:23:37,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:37,506 INFO L225 Difference]: With dead ends: 2289 [2021-12-21 16:23:37,506 INFO L226 Difference]: Without dead ends: 1453 [2021-12-21 16:23:37,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:23:37,508 INFO L933 BasicCegarLoop]: 341 mSDtfsCounter, 382 mSDsluCounter, 1734 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 2075 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:37,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 2075 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-21 16:23:37,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-12-21 16:23:37,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 867. [2021-12-21 16:23:37,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 677 states have (on average 1.2644017725258494) internal successors, (856), 685 states have internal predecessors, (856), 134 states have call successors, (134), 56 states have call predecessors, (134), 55 states have return successors, (133), 133 states have call predecessors, (133), 133 states have call successors, (133) [2021-12-21 16:23:37,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1123 transitions. [2021-12-21 16:23:37,539 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1123 transitions. Word has length 161 [2021-12-21 16:23:37,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:37,540 INFO L470 AbstractCegarLoop]: Abstraction has 867 states and 1123 transitions. [2021-12-21 16:23:37,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:23:37,540 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1123 transitions. [2021-12-21 16:23:37,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-21 16:23:37,543 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:37,543 INFO L514 BasicCegarLoop]: 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, 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] [2021-12-21 16:23:37,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-21 16:23:37,544 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:37,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:37,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1123553049, now seen corresponding path program 1 times [2021-12-21 16:23:37,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:37,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419704529] [2021-12-21 16:23:37,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:37,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:37,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:37,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:37,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:37,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:37,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:37,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:23:37,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 16:23:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 16:23:37,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 16:23:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:37,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 16:23:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 16:23:37,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:23:37,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 16:23:37,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 16:23:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:37,727 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-21 16:23:37,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419704529] [2021-12-21 16:23:37,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419704529] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:23:37,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [916829838] [2021-12-21 16:23:37,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:37,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:23:37,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:23:37,730 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:23:37,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-21 16:23:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1311 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-21 16:23:38,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:23:38,383 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-21 16:23:38,384 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:23:38,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [916829838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:38,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:23:38,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2021-12-21 16:23:38,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021156002] [2021-12-21 16:23:38,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:38,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:23:38,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:38,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:23:38,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-21 16:23:38,386 INFO L87 Difference]: Start difference. First operand 867 states and 1123 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:23:38,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:38,530 INFO L93 Difference]: Finished difference Result 2809 states and 3670 transitions. [2021-12-21 16:23:38,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-21 16:23:38,531 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 163 [2021-12-21 16:23:38,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:38,537 INFO L225 Difference]: With dead ends: 2809 [2021-12-21 16:23:38,537 INFO L226 Difference]: Without dead ends: 1961 [2021-12-21 16:23:38,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-21 16:23:38,540 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 395 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1873 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:38,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1873 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:23:38,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2021-12-21 16:23:38,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 903. [2021-12-21 16:23:38,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 903 states, 705 states have (on average 1.2539007092198582) internal successors, (884), 713 states have internal predecessors, (884), 142 states have call successors, (142), 56 states have call predecessors, (142), 55 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2021-12-21 16:23:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1167 transitions. [2021-12-21 16:23:38,584 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1167 transitions. Word has length 163 [2021-12-21 16:23:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:38,585 INFO L470 AbstractCegarLoop]: Abstraction has 903 states and 1167 transitions. [2021-12-21 16:23:38,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:23:38,585 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1167 transitions. [2021-12-21 16:23:38,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2021-12-21 16:23:38,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:38,587 INFO L514 BasicCegarLoop]: 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, 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] [2021-12-21 16:23:38,608 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-21 16:23:38,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-21 16:23:38,806 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:38,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:38,806 INFO L85 PathProgramCache]: Analyzing trace with hash 112435799, now seen corresponding path program 1 times [2021-12-21 16:23:38,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:38,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43261351] [2021-12-21 16:23:38,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:38,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:38,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:38,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:38,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:23:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-21 16:23:38,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 16:23:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-21 16:23:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:38,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-21 16:23:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-21 16:23:38,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:39,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-21 16:23:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 16:23:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:39,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-21 16:23:39,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:39,024 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2021-12-21 16:23:39,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:39,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43261351] [2021-12-21 16:23:39,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43261351] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:23:39,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [668017507] [2021-12-21 16:23:39,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:39,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:23:39,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:23:39,044 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:23:39,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-21 16:23:39,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:39,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 1306 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-21 16:23:39,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:23:39,661 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-21 16:23:39,661 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:23:39,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [668017507] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:39,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:23:39,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 9 [2021-12-21 16:23:39,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88040426] [2021-12-21 16:23:39,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:39,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-21 16:23:39,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:39,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-21 16:23:39,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:23:39,664 INFO L87 Difference]: Start difference. First operand 903 states and 1167 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:23:39,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:39,718 INFO L93 Difference]: Finished difference Result 1815 states and 2371 transitions. [2021-12-21 16:23:39,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:23:39,719 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 163 [2021-12-21 16:23:39,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:39,722 INFO L225 Difference]: With dead ends: 1815 [2021-12-21 16:23:39,723 INFO L226 Difference]: Without dead ends: 931 [2021-12-21 16:23:39,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 192 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-21 16:23:39,725 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 1 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:39,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1118 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-21 16:23:39,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 931 states. [2021-12-21 16:23:39,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 931 to 919. [2021-12-21 16:23:39,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 717 states have (on average 1.2496513249651324) internal successors, (896), 725 states have internal predecessors, (896), 142 states have call successors, (142), 56 states have call predecessors, (142), 59 states have return successors, (161), 145 states have call predecessors, (161), 141 states have call successors, (161) [2021-12-21 16:23:39,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1199 transitions. [2021-12-21 16:23:39,769 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1199 transitions. Word has length 163 [2021-12-21 16:23:39,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:39,769 INFO L470 AbstractCegarLoop]: Abstraction has 919 states and 1199 transitions. [2021-12-21 16:23:39,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-21 16:23:39,769 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1199 transitions. [2021-12-21 16:23:39,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-21 16:23:39,772 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:39,772 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:23:39,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-21 16:23:39,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-21 16:23:39,988 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:39,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:39,988 INFO L85 PathProgramCache]: Analyzing trace with hash -1029800077, now seen corresponding path program 1 times [2021-12-21 16:23:39,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:39,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765465518] [2021-12-21 16:23:39,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:39,988 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:40,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:40,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:40,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:40,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:40,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:40,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:23:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:40,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 16:23:40,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 16:23:40,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:23:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:40,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:23:40,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-21 16:23:40,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-21 16:23:40,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-21 16:23:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-21 16:23:40,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,323 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-21 16:23:40,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:40,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765465518] [2021-12-21 16:23:40,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765465518] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:23:40,324 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478862024] [2021-12-21 16:23:40,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:40,324 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:23:40,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:23:40,325 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:23:40,327 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-21 16:23:40,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:40,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-21 16:23:40,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:23:41,034 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-21 16:23:41,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:23:41,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [478862024] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:41,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:23:41,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 16 [2021-12-21 16:23:41,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689477874] [2021-12-21 16:23:41,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:41,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-21 16:23:41,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:41,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-21 16:23:41,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-21 16:23:41,036 INFO L87 Difference]: Start difference. First operand 919 states and 1199 transitions. Second operand has 10 states, 10 states have (on average 11.0) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 16:23:41,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:41,240 INFO L93 Difference]: Finished difference Result 2367 states and 3161 transitions. [2021-12-21 16:23:41,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-21 16:23:41,240 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 169 [2021-12-21 16:23:41,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:41,245 INFO L225 Difference]: With dead ends: 2367 [2021-12-21 16:23:41,245 INFO L226 Difference]: Without dead ends: 1467 [2021-12-21 16:23:41,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 200 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-21 16:23:41,248 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 200 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 3384 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:41,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [211 Valid, 3384 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:23:41,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2021-12-21 16:23:41,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 951. [2021-12-21 16:23:41,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 951 states, 745 states have (on average 1.2402684563758388) internal successors, (924), 749 states have internal predecessors, (924), 142 states have call successors, (142), 56 states have call predecessors, (142), 63 states have return successors, (169), 153 states have call predecessors, (169), 141 states have call successors, (169) [2021-12-21 16:23:41,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 951 states to 951 states and 1235 transitions. [2021-12-21 16:23:41,321 INFO L78 Accepts]: Start accepts. Automaton has 951 states and 1235 transitions. Word has length 169 [2021-12-21 16:23:41,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:41,322 INFO L470 AbstractCegarLoop]: Abstraction has 951 states and 1235 transitions. [2021-12-21 16:23:41,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.0) internal successors, (110), 8 states have internal predecessors, (110), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-21 16:23:41,322 INFO L276 IsEmpty]: Start isEmpty. Operand 951 states and 1235 transitions. [2021-12-21 16:23:41,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-21 16:23:41,324 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:41,324 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2021-12-21 16:23:41,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-21 16:23:41,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:23:41,539 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:41,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:41,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1965723351, now seen corresponding path program 2 times [2021-12-21 16:23:41,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:41,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762182419] [2021-12-21 16:23:41,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:41,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:41,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:41,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:41,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:41,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:41,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:41,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:23:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:41,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 16:23:41,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 16:23:41,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:23:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:41,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:23:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 16:23:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 16:23:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-21 16:23:41,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-21 16:23:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:41,805 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-21 16:23:41,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:41,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762182419] [2021-12-21 16:23:41,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762182419] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:23:41,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [813787200] [2021-12-21 16:23:41,806 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-21 16:23:41,806 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:23:41,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:23:41,819 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:23:41,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-21 16:23:42,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-21 16:23:42,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-21 16:23:42,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 601 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-21 16:23:42,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:23:42,353 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-21 16:23:42,353 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:23:42,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [813787200] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:42,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:23:42,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 17 [2021-12-21 16:23:42,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082481620] [2021-12-21 16:23:42,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:42,354 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-21 16:23:42,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:42,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-21 16:23:42,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2021-12-21 16:23:42,355 INFO L87 Difference]: Start difference. First operand 951 states and 1235 transitions. Second operand has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 16:23:42,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:42,631 INFO L93 Difference]: Finished difference Result 1923 states and 2587 transitions. [2021-12-21 16:23:42,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-21 16:23:42,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2021-12-21 16:23:42,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:42,635 INFO L225 Difference]: With dead ends: 1923 [2021-12-21 16:23:42,635 INFO L226 Difference]: Without dead ends: 1453 [2021-12-21 16:23:42,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2021-12-21 16:23:42,637 INFO L933 BasicCegarLoop]: 421 mSDtfsCounter, 587 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:42,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [613 Valid, 1809 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:23:42,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1453 states. [2021-12-21 16:23:42,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1453 to 957. [2021-12-21 16:23:42,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 751 states have (on average 1.2383488681757657) internal successors, (930), 755 states have internal predecessors, (930), 142 states have call successors, (142), 56 states have call predecessors, (142), 63 states have return successors, (169), 153 states have call predecessors, (169), 141 states have call successors, (169) [2021-12-21 16:23:42,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1241 transitions. [2021-12-21 16:23:42,704 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1241 transitions. Word has length 175 [2021-12-21 16:23:42,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:42,704 INFO L470 AbstractCegarLoop]: Abstraction has 957 states and 1241 transitions. [2021-12-21 16:23:42,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.833333333333332) internal successors, (101), 6 states have internal predecessors, (101), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-21 16:23:42,705 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1241 transitions. [2021-12-21 16:23:42,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-21 16:23:42,707 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:42,707 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:23:42,727 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-21 16:23:42,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:23:42,925 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:42,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1151185806, now seen corresponding path program 1 times [2021-12-21 16:23:42,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:42,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877308863] [2021-12-21 16:23:42,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:42,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:42,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:43,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:43,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:43,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:43,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:23:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:43,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 16:23:43,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 16:23:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:23:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:43,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:23:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 16:23:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 16:23:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 16:23:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 16:23:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:23:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-21 16:23:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-21 16:23:43,114 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:43,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877308863] [2021-12-21 16:23:43,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877308863] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:23:43,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628083825] [2021-12-21 16:23:43,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:43,115 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:23:43,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:23:43,120 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:23:43,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-21 16:23:43,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:43,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 1798 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-21 16:23:43,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:23:43,773 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2021-12-21 16:23:43,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-21 16:23:43,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628083825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:43,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-21 16:23:43,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 9 [2021-12-21 16:23:43,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828335848] [2021-12-21 16:23:43,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:43,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-21 16:23:43,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:43,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-21 16:23:43,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:23:43,793 INFO L87 Difference]: Start difference. First operand 957 states and 1241 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-21 16:23:44,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:44,112 INFO L93 Difference]: Finished difference Result 2835 states and 3686 transitions. [2021-12-21 16:23:44,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-21 16:23:44,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 206 [2021-12-21 16:23:44,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:44,123 INFO L225 Difference]: With dead ends: 2835 [2021-12-21 16:23:44,123 INFO L226 Difference]: Without dead ends: 2827 [2021-12-21 16:23:44,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 244 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-21 16:23:44,125 INFO L933 BasicCegarLoop]: 575 mSDtfsCounter, 399 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 1079 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:44,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [399 Valid, 1079 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-21 16:23:44,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2021-12-21 16:23:44,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2813. [2021-12-21 16:23:44,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2813 states, 2211 states have (on average 1.2419719583898687) internal successors, (2746), 2227 states have internal predecessors, (2746), 418 states have call successors, (418), 160 states have call predecessors, (418), 183 states have return successors, (501), 449 states have call predecessors, (501), 417 states have call successors, (501) [2021-12-21 16:23:44,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2813 states to 2813 states and 3665 transitions. [2021-12-21 16:23:44,335 INFO L78 Accepts]: Start accepts. Automaton has 2813 states and 3665 transitions. Word has length 206 [2021-12-21 16:23:44,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:44,335 INFO L470 AbstractCegarLoop]: Abstraction has 2813 states and 3665 transitions. [2021-12-21 16:23:44,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 3 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-21 16:23:44,335 INFO L276 IsEmpty]: Start isEmpty. Operand 2813 states and 3665 transitions. [2021-12-21 16:23:44,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2021-12-21 16:23:44,339 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:44,339 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:23:44,367 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-21 16:23:44,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-21 16:23:44,568 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:44,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:44,569 INFO L85 PathProgramCache]: Analyzing trace with hash 140068556, now seen corresponding path program 1 times [2021-12-21 16:23:44,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:44,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182114109] [2021-12-21 16:23:44,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:44,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:44,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:44,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:44,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:44,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:44,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:23:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 16:23:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 16:23:44,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:23:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:44,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:23:44,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:44,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:44,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 16:23:44,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 16:23:44,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 16:23:44,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 16:23:44,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:23:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-21 16:23:44,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:44,756 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-21 16:23:44,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:44,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182114109] [2021-12-21 16:23:44,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182114109] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-21 16:23:44,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-21 16:23:44,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-21 16:23:44,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703288079] [2021-12-21 16:23:44,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-21 16:23:44,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-21 16:23:44,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-21 16:23:44,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-21 16:23:44,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-21 16:23:44,758 INFO L87 Difference]: Start difference. First operand 2813 states and 3665 transitions. Second operand has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-21 16:23:45,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-21 16:23:45,516 INFO L93 Difference]: Finished difference Result 8907 states and 11680 transitions. [2021-12-21 16:23:45,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-21 16:23:45,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 206 [2021-12-21 16:23:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-21 16:23:45,535 INFO L225 Difference]: With dead ends: 8907 [2021-12-21 16:23:45,535 INFO L226 Difference]: Without dead ends: 6113 [2021-12-21 16:23:45,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-12-21 16:23:45,541 INFO L933 BasicCegarLoop]: 349 mSDtfsCounter, 545 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 580 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-21 16:23:45,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [580 Valid, 1439 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-21 16:23:45,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6113 states. [2021-12-21 16:23:45,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6113 to 2825. [2021-12-21 16:23:45,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2223 states have (on average 1.2406657669815564) internal successors, (2758), 2243 states have internal predecessors, (2758), 418 states have call successors, (418), 160 states have call predecessors, (418), 183 states have return successors, (501), 445 states have call predecessors, (501), 417 states have call successors, (501) [2021-12-21 16:23:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 3677 transitions. [2021-12-21 16:23:45,775 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 3677 transitions. Word has length 206 [2021-12-21 16:23:45,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-21 16:23:45,776 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 3677 transitions. [2021-12-21 16:23:45,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.625) internal successors, (125), 4 states have internal predecessors, (125), 2 states have call successors, (18), 6 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2021-12-21 16:23:45,776 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 3677 transitions. [2021-12-21 16:23:45,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2021-12-21 16:23:45,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-21 16:23:45,781 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-21 16:23:45,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-21 16:23:45,781 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-21 16:23:45,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-21 16:23:45,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1190503840, now seen corresponding path program 1 times [2021-12-21 16:23:45,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-21 16:23:45,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638222717] [2021-12-21 16:23:45,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:45,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-21 16:23:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:45,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:45,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-21 16:23:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:45,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-21 16:23:45,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-21 16:23:45,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:45,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-21 16:23:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-21 16:23:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:45,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-21 16:23:45,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-21 16:23:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-21 16:23:46,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-21 16:23:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-21 16:23:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-21 16:23:46,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-21 16:23:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-21 16:23:46,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-21 16:23:46,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-21 16:23:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-21 16:23:46,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 9 proven. 13 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-12-21 16:23:46,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-21 16:23:46,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638222717] [2021-12-21 16:23:46,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638222717] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-21 16:23:46,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38319388] [2021-12-21 16:23:46,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-21 16:23:46,125 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-21 16:23:46,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-21 16:23:46,148 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-21 16:23:46,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-21 16:23:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-21 16:23:46,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 138 conjunts are in the unsatisfiable core [2021-12-21 16:23:46,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-21 16:23:46,653 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 16:23:46,695 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-12-21 16:23:47,109 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-21 16:23:47,115 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1031 (Array Int Int))) (= (store |c_old(#memory_int)| |c_#Ultimate.meminit_#ptr.base| v_ArrVal_1031) |c_#memory_int|)) is different from true [2021-12-21 16:23:47,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-12-21 16:23:47,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 16:23:47,225 INFO L353 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-21 16:23:47,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-21 16:23:47,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-21 16:23:47,349 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-21 16:23:51,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-21 16:23:53,550 INFO L353 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-21 16:23:53,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-21 16:23:54,101 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 16:23:54,102 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 16:23:58,508 INFO L353 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-21 16:23:58,508 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 7 [2021-12-21 16:24:26,940 INFO L353 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-21 16:24:26,940 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-21 16:24:39,234 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15