./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.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 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 03:19:06,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 03:19:06,304 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 03:19:06,336 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 03:19:06,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 03:19:06,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 03:19:06,355 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 03:19:06,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 03:19:06,357 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 03:19:06,358 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 03:19:06,358 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 03:19:06,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 03:19:06,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 03:19:06,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 03:19:06,361 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 03:19:06,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 03:19:06,362 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 03:19:06,366 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 03:19:06,370 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 03:19:06,376 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 03:19:06,382 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 03:19:06,383 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 03:19:06,384 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 03:19:06,385 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 03:19:06,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 03:19:06,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 03:19:06,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 03:19:06,387 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 03:19:06,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 03:19:06,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 03:19:06,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 03:19:06,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 03:19:06,389 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 03:19:06,390 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 03:19:06,390 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 03:19:06,391 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 03:19:06,391 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 03:19:06,391 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 03:19:06,391 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 03:19:06,392 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 03:19:06,394 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 03:19:06,395 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 03:19:06,413 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 03:19:06,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 03:19:06,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 03:19:06,414 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 03:19:06,414 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 03:19:06,414 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 03:19:06,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 03:19:06,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 03:19:06,415 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 03:19:06,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 03:19:06,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 03:19:06,416 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 03:19:06,416 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 03:19:06,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 03:19:06,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 03:19:06,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 03:19:06,417 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 03:19:06,417 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 03:19:06,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 03:19:06,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 03:19:06,418 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 03:19:06,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:19:06,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 03:19:06,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 03:19:06,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 03:19:06,419 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 03:19:06,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 03:19:06,420 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 03:19:06,420 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 03:19:06,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 03:19:06,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 03:19:06,420 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2259272f0273dfac0cad582092d6645e308d8387476548b6016b816b129472dc [2021-12-18 03:19:06,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 03:19:06,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 03:19:06,662 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 03:19:06,662 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 03:19:06,663 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 03:19:06,664 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-12-18 03:19:06,712 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c53e765f/82d9794530d5483f87389880b731db38/FLAG2b991261e [2021-12-18 03:19:07,270 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 03:19:07,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-12-18 03:19:07,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c53e765f/82d9794530d5483f87389880b731db38/FLAG2b991261e [2021-12-18 03:19:07,742 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4c53e765f/82d9794530d5483f87389880b731db38 [2021-12-18 03:19:07,744 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 03:19:07,746 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 03:19:07,748 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 03:19:07,748 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 03:19:07,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 03:19:07,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:19:07" (1/1) ... [2021-12-18 03:19:07,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f9e504e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:07, skipping insertion in model container [2021-12-18 03:19:07,753 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 03:19:07" (1/1) ... [2021-12-18 03:19:07,759 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 03:19:07,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 03:19:08,740 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-12-18 03:19:08,817 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:19:08,843 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 03:19:09,034 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-consumption/32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i[160403,160416] [2021-12-18 03:19:09,051 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 03:19:09,108 INFO L208 MainTranslator]: Completed translation [2021-12-18 03:19:09,109 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09 WrapperNode [2021-12-18 03:19:09,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 03:19:09,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 03:19:09,111 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 03:19:09,111 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 03:19:09,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,177 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,296 INFO L137 Inliner]: procedures = 196, calls = 979, calls flagged for inlining = 91, calls inlined = 82, statements flattened = 2523 [2021-12-18 03:19:09,297 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 03:19:09,298 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 03:19:09,298 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 03:19:09,298 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 03:19:09,304 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,325 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,325 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 03:19:09,400 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 03:19:09,400 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 03:19:09,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 03:19:09,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (1/1) ... [2021-12-18 03:19:09,413 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 03:19:09,427 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:19:09,469 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) [2021-12-18 03:19:09,493 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 [2021-12-18 03:19:09,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-18 03:19:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_exit [2021-12-18 03:19:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_exit [2021-12-18 03:19:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-18 03:19:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-18 03:19:09,514 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 03:19:09,514 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 03:19:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_input_report [2021-12-18 03:19:09,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_input_report [2021-12-18 03:19:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-12-18 03:19:09,515 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-12-18 03:19:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 03:19:09,515 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 03:19:09,515 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 03:19:09,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 03:19:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 03:19:09,516 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 03:19:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_rfk_state [2021-12-18 03:19:09,516 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_rfk_state [2021-12-18 03:19:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 03:19:09,516 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 03:19:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure read_ec_data [2021-12-18 03:19:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure read_ec_data [2021-12-18 03:19:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 03:19:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure dev_set_drvdata [2021-12-18 03:19:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_set_drvdata [2021-12-18 03:19:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_sync_touchpad_state [2021-12-18 03:19:09,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_sync_touchpad_state [2021-12-18 03:19:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 03:19:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 03:19:09,518 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 03:19:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_init [2021-12-18 03:19:09,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_init [2021-12-18 03:19:09,518 INFO L130 BoogieDeclarations]: Found specification of procedure acpi_evaluate_integer [2021-12-18 03:19:09,518 INFO L138 BoogieDeclarations]: Found implementation of procedure acpi_evaluate_integer [2021-12-18 03:19:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-12-18 03:19:09,519 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-12-18 03:19:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_notify [2021-12-18 03:19:09,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_notify [2021-12-18 03:19:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2021-12-18 03:19:09,519 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2021-12-18 03:19:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-18 03:19:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_destroy [2021-12-18 03:19:09,520 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_destroy [2021-12-18 03:19:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 03:19:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure backlight_update_status [2021-12-18 03:19:09,521 INFO L138 BoogieDeclarations]: Found implementation of procedure backlight_update_status [2021-12-18 03:19:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2021-12-18 03:19:09,521 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2021-12-18 03:19:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_add [2021-12-18 03:19:09,521 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_add [2021-12-18 03:19:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_update_status [2021-12-18 03:19:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_update_status [2021-12-18 03:19:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-18 03:19:09,522 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-18 03:19:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure rfkill_init_sw_state [2021-12-18 03:19:09,523 INFO L138 BoogieDeclarations]: Found implementation of procedure rfkill_init_sw_state [2021-12-18 03:19:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 03:19:09,524 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 03:19:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-12-18 03:19:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-12-18 03:19:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 03:19:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-12-18 03:19:09,525 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-12-18 03:19:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_backlight_get_brightness [2021-12-18 03:19:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_backlight_get_brightness [2021-12-18 03:19:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_unregister_rfkill [2021-12-18 03:19:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_unregister_rfkill [2021-12-18 03:19:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 03:19:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2021-12-18 03:19:09,526 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2021-12-18 03:19:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 03:19:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcr [2021-12-18 03:19:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcr [2021-12-18 03:19:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure method_vpcw [2021-12-18 03:19:09,527 INFO L138 BoogieDeclarations]: Found implementation of procedure method_vpcw [2021-12-18 03:19:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure sparse_keymap_free [2021-12-18 03:19:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure sparse_keymap_free [2021-12-18 03:19:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 03:19:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-18 03:19:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-18 03:19:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_acpi_resume [2021-12-18 03:19:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_acpi_resume [2021-12-18 03:19:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure write_ec_cmd [2021-12-18 03:19:09,528 INFO L138 BoogieDeclarations]: Found implementation of procedure write_ec_cmd [2021-12-18 03:19:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_platform_exit [2021-12-18 03:19:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_platform_exit [2021-12-18 03:19:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure ideapad_debugfs_exit [2021-12-18 03:19:09,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ideapad_debugfs_exit [2021-12-18 03:19:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 03:19:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 03:19:09,530 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 03:19:09,948 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 03:19:09,950 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 03:19:18,358 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 03:19:18,370 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 03:19:18,383 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 03:19:18,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:19:18 BoogieIcfgContainer [2021-12-18 03:19:18,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 03:19:18,387 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 03:19:18,387 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 03:19:18,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 03:19:18,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 03:19:07" (1/3) ... [2021-12-18 03:19:18,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9aca83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:19:18, skipping insertion in model container [2021-12-18 03:19:18,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 03:19:09" (2/3) ... [2021-12-18 03:19:18,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b9aca83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 03:19:18, skipping insertion in model container [2021-12-18 03:19:18,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 03:19:18" (3/3) ... [2021-12-18 03:19:18,408 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--platform--x86--ideapad-laptop.ko-main.cil.out.i [2021-12-18 03:19:18,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 03:19:18,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 03:19:18,448 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 03:19:18,452 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 [2021-12-18 03:19:18,454 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 03:19:18,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2021-12-18 03:19:18,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-12-18 03:19:18,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:18,489 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] [2021-12-18 03:19:18,489 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:18,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash -750438681, now seen corresponding path program 1 times [2021-12-18 03:19:18,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:18,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728078310] [2021-12-18 03:19:18,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:18,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:18,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:18,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:19:18,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:18,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728078310] [2021-12-18 03:19:18,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728078310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:18,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:18,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:19:18,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941209551] [2021-12-18 03:19:18,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:19,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:19:19,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:19:19,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:19,032 INFO L87 Difference]: Start difference. First operand has 700 states, 543 states have (on average 1.4548802946593002) internal successors, (790), 562 states have internal predecessors, (790), 116 states have call successors, (116), 39 states have call predecessors, (116), 39 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:21,072 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:21,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:21,234 INFO L93 Difference]: Finished difference Result 2070 states and 3094 transitions. [2021-12-18 03:19:21,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:19:21,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-12-18 03:19:21,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:21,253 INFO L225 Difference]: With dead ends: 2070 [2021-12-18 03:19:21,253 INFO L226 Difference]: Without dead ends: 1369 [2021-12-18 03:19:21,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:21,263 INFO L933 BasicCegarLoop]: 1121 mSDtfsCounter, 971 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 2119 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:21,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 2119 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-18 03:19:21,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1369 states. [2021-12-18 03:19:21,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1369 to 1365. [2021-12-18 03:19:21,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.451552210724365) internal successors, (1543), 1091 states have internal predecessors, (1543), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2021-12-18 03:19:21,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1986 transitions. [2021-12-18 03:19:21,377 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1986 transitions. Word has length 22 [2021-12-18 03:19:21,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:21,378 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 1986 transitions. [2021-12-18 03:19:21,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:21,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1986 transitions. [2021-12-18 03:19:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-18 03:19:21,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:21,390 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] [2021-12-18 03:19:21,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 03:19:21,391 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:21,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:21,393 INFO L85 PathProgramCache]: Analyzing trace with hash 577706747, now seen corresponding path program 1 times [2021-12-18 03:19:21,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:21,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336416409] [2021-12-18 03:19:21,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:21,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:21,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:21,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:19:21,551 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:21,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336416409] [2021-12-18 03:19:21,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336416409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:21,552 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:21,552 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:19:21,552 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935314450] [2021-12-18 03:19:21,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:21,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:19:21,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:21,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:19:21,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:21,554 INFO L87 Difference]: Start difference. First operand 1365 states and 1986 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:21,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:21,633 INFO L93 Difference]: Finished difference Result 1391 states and 2018 transitions. [2021-12-18 03:19:21,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:19:21,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-18 03:19:21,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:21,646 INFO L225 Difference]: With dead ends: 1391 [2021-12-18 03:19:21,647 INFO L226 Difference]: Without dead ends: 1378 [2021-12-18 03:19:21,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:21,651 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 1003 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 1039 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:21,653 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 1039 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 03:19:21,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1378 states. [2021-12-18 03:19:21,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1378 to 1365. [2021-12-18 03:19:21,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1365 states, 1063 states have (on average 1.4506114769520226) internal successors, (1542), 1091 states have internal predecessors, (1542), 225 states have call successors, (225), 77 states have call predecessors, (225), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2021-12-18 03:19:21,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1985 transitions. [2021-12-18 03:19:21,726 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1985 transitions. Word has length 25 [2021-12-18 03:19:21,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:21,727 INFO L470 AbstractCegarLoop]: Abstraction has 1365 states and 1985 transitions. [2021-12-18 03:19:21,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:21,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1985 transitions. [2021-12-18 03:19:21,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-12-18 03:19:21,729 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:21,729 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] [2021-12-18 03:19:21,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 03:19:21,731 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:21,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:21,732 INFO L85 PathProgramCache]: Analyzing trace with hash 634965049, now seen corresponding path program 1 times [2021-12-18 03:19:21,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:21,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065068213] [2021-12-18 03:19:21,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:21,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:21,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:19:21,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:21,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065068213] [2021-12-18 03:19:21,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065068213] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:21,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:21,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:19:21,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783279562] [2021-12-18 03:19:21,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:21,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:19:21,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:21,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:19:21,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:21,893 INFO L87 Difference]: Start difference. First operand 1365 states and 1985 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:23,916 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:23,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:23,989 INFO L93 Difference]: Finished difference Result 1367 states and 1986 transitions. [2021-12-18 03:19:23,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:19:23,990 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2021-12-18 03:19:23,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:23,997 INFO L225 Difference]: With dead ends: 1367 [2021-12-18 03:19:23,997 INFO L226 Difference]: Without dead ends: 1364 [2021-12-18 03:19:23,999 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:23,999 INFO L933 BasicCegarLoop]: 1005 mSDtfsCounter, 984 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1005 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:24,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 1005 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-18 03:19:24,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1364 states. [2021-12-18 03:19:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1364 to 1364. [2021-12-18 03:19:24,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1364 states, 1063 states have (on average 1.4496707431796803) internal successors, (1541), 1090 states have internal predecessors, (1541), 224 states have call successors, (224), 77 states have call predecessors, (224), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2021-12-18 03:19:24,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1364 states to 1364 states and 1983 transitions. [2021-12-18 03:19:24,055 INFO L78 Accepts]: Start accepts. Automaton has 1364 states and 1983 transitions. Word has length 25 [2021-12-18 03:19:24,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:24,055 INFO L470 AbstractCegarLoop]: Abstraction has 1364 states and 1983 transitions. [2021-12-18 03:19:24,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:24,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1364 states and 1983 transitions. [2021-12-18 03:19:24,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-12-18 03:19:24,057 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:24,058 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] [2021-12-18 03:19:24,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 03:19:24,058 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:24,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:24,059 INFO L85 PathProgramCache]: Analyzing trace with hash -1791173724, now seen corresponding path program 1 times [2021-12-18 03:19:24,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:24,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100656395] [2021-12-18 03:19:24,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:24,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:24,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:19:24,198 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100656395] [2021-12-18 03:19:24,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100656395] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:24,199 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:24,199 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:19:24,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066618069] [2021-12-18 03:19:24,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:24,200 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:19:24,200 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:24,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:19:24,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:24,201 INFO L87 Difference]: Start difference. First operand 1364 states and 1983 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:26,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:26,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:26,333 INFO L93 Difference]: Finished difference Result 1366 states and 1984 transitions. [2021-12-18 03:19:26,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:19:26,348 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2021-12-18 03:19:26,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:26,353 INFO L225 Difference]: With dead ends: 1366 [2021-12-18 03:19:26,353 INFO L226 Difference]: Without dead ends: 1363 [2021-12-18 03:19:26,354 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:26,354 INFO L933 BasicCegarLoop]: 1003 mSDtfsCounter, 981 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:26,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [981 Valid, 1003 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-18 03:19:26,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1363 states. [2021-12-18 03:19:26,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1363 to 1363. [2021-12-18 03:19:26,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1363 states, 1063 states have (on average 1.4487300094073376) internal successors, (1540), 1089 states have internal predecessors, (1540), 223 states have call successors, (223), 77 states have call predecessors, (223), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2021-12-18 03:19:26,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1363 states to 1363 states and 1981 transitions. [2021-12-18 03:19:26,398 INFO L78 Accepts]: Start accepts. Automaton has 1363 states and 1981 transitions. Word has length 26 [2021-12-18 03:19:26,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:26,398 INFO L470 AbstractCegarLoop]: Abstraction has 1363 states and 1981 transitions. [2021-12-18 03:19:26,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:26,398 INFO L276 IsEmpty]: Start isEmpty. Operand 1363 states and 1981 transitions. [2021-12-18 03:19:26,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-12-18 03:19:26,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:26,400 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] [2021-12-18 03:19:26,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 03:19:26,400 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:26,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:26,401 INFO L85 PathProgramCache]: Analyzing trace with hash 307940508, now seen corresponding path program 1 times [2021-12-18 03:19:26,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:26,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590305169] [2021-12-18 03:19:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:26,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:26,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:26,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:19:26,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:26,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590305169] [2021-12-18 03:19:26,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590305169] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:26,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:26,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:19:26,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746959359] [2021-12-18 03:19:26,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:26,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:19:26,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:19:26,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:26,547 INFO L87 Difference]: Start difference. First operand 1363 states and 1981 transitions. Second operand has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:28,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:28,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:28,622 INFO L93 Difference]: Finished difference Result 1365 states and 1982 transitions. [2021-12-18 03:19:28,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:19:28,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-12-18 03:19:28,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:28,629 INFO L225 Difference]: With dead ends: 1365 [2021-12-18 03:19:28,629 INFO L226 Difference]: Without dead ends: 1362 [2021-12-18 03:19:28,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:28,631 INFO L933 BasicCegarLoop]: 1001 mSDtfsCounter, 978 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1001 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:28,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1001 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-12-18 03:19:28,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2021-12-18 03:19:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 1362. [2021-12-18 03:19:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1362 states, 1063 states have (on average 1.4477892756349953) internal successors, (1539), 1088 states have internal predecessors, (1539), 222 states have call successors, (222), 77 states have call predecessors, (222), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2021-12-18 03:19:28,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1362 states to 1362 states and 1979 transitions. [2021-12-18 03:19:28,668 INFO L78 Accepts]: Start accepts. Automaton has 1362 states and 1979 transitions. Word has length 27 [2021-12-18 03:19:28,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:28,669 INFO L470 AbstractCegarLoop]: Abstraction has 1362 states and 1979 transitions. [2021-12-18 03:19:28,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.666666666666666) internal successors, (26), 3 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:28,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1362 states and 1979 transitions. [2021-12-18 03:19:28,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-12-18 03:19:28,671 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:28,671 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] [2021-12-18 03:19:28,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 03:19:28,672 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:28,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:28,672 INFO L85 PathProgramCache]: Analyzing trace with hash 955977127, now seen corresponding path program 1 times [2021-12-18 03:19:28,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:28,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184199256] [2021-12-18 03:19:28,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:28,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:28,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:19:28,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:28,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184199256] [2021-12-18 03:19:28,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184199256] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:28,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:28,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:19:28,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844196372] [2021-12-18 03:19:28,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:28,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:19:28,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:28,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:19:28,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:28,806 INFO L87 Difference]: Start difference. First operand 1362 states and 1979 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:30,827 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:30,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:30,875 INFO L93 Difference]: Finished difference Result 1364 states and 1980 transitions. [2021-12-18 03:19:30,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:19:30,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2021-12-18 03:19:30,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:30,883 INFO L225 Difference]: With dead ends: 1364 [2021-12-18 03:19:30,883 INFO L226 Difference]: Without dead ends: 1361 [2021-12-18 03:19:30,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:30,885 INFO L933 BasicCegarLoop]: 999 mSDtfsCounter, 975 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:30,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 999 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 1 Unknown, 0 Unchecked, 2.0s Time] [2021-12-18 03:19:30,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1361 states. [2021-12-18 03:19:30,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1361 to 1361. [2021-12-18 03:19:30,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1063 states have (on average 1.4468485418626529) internal successors, (1538), 1087 states have internal predecessors, (1538), 221 states have call successors, (221), 77 states have call predecessors, (221), 76 states have return successors, (218), 210 states have call predecessors, (218), 218 states have call successors, (218) [2021-12-18 03:19:30,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1977 transitions. [2021-12-18 03:19:30,929 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1977 transitions. Word has length 28 [2021-12-18 03:19:30,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:30,930 INFO L470 AbstractCegarLoop]: Abstraction has 1361 states and 1977 transitions. [2021-12-18 03:19:30,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:30,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1977 transitions. [2021-12-18 03:19:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-12-18 03:19:30,933 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:30,933 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] [2021-12-18 03:19:30,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 03:19:30,934 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:30,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:30,934 INFO L85 PathProgramCache]: Analyzing trace with hash -429719297, now seen corresponding path program 1 times [2021-12-18 03:19:30,934 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:30,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692198532] [2021-12-18 03:19:30,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:30,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 03:19:31,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:31,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692198532] [2021-12-18 03:19:31,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692198532] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:31,043 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:31,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 03:19:31,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937938939] [2021-12-18 03:19:31,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:31,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:19:31,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:31,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:19:31,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:31,044 INFO L87 Difference]: Start difference. First operand 1361 states and 1977 transitions. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:33,065 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:33,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:33,148 INFO L93 Difference]: Finished difference Result 3323 states and 4738 transitions. [2021-12-18 03:19:33,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:19:33,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2021-12-18 03:19:33,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:33,156 INFO L225 Difference]: With dead ends: 3323 [2021-12-18 03:19:33,156 INFO L226 Difference]: Without dead ends: 1957 [2021-12-18 03:19:33,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 03:19:33,162 INFO L933 BasicCegarLoop]: 1062 mSDtfsCounter, 941 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 941 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:33,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [941 Valid, 1473 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-18 03:19:33,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2021-12-18 03:19:33,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1951. [2021-12-18 03:19:33,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1951 states, 1486 states have (on average 1.3909825033647376) internal successors, (2067), 1518 states have internal predecessors, (2067), 330 states have call successors, (330), 135 states have call predecessors, (330), 134 states have return successors, (334), 321 states have call predecessors, (334), 328 states have call successors, (334) [2021-12-18 03:19:33,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2731 transitions. [2021-12-18 03:19:33,227 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2731 transitions. Word has length 29 [2021-12-18 03:19:33,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:33,229 INFO L470 AbstractCegarLoop]: Abstraction has 1951 states and 2731 transitions. [2021-12-18 03:19:33,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 03:19:33,230 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2731 transitions. [2021-12-18 03:19:33,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-18 03:19:33,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:33,239 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-18 03:19:33,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 03:19:33,240 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:33,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:33,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1443051079, now seen corresponding path program 1 times [2021-12-18 03:19:33,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:33,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041736674] [2021-12-18 03:19:33,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:33,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:33,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 03:19:33,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 03:19:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 03:19:33,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-18 03:19:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-18 03:19:33,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 03:19:33,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 03:19:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 03:19:33,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:19:33,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 03:19:33,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 03:19:33,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 03:19:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 03:19:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 03:19:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:33,712 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2021-12-18 03:19:33,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:33,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2041736674] [2021-12-18 03:19:33,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2041736674] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:33,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:33,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 03:19:33,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844301124] [2021-12-18 03:19:33,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:33,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 03:19:33,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:33,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 03:19:33,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:19:33,715 INFO L87 Difference]: Start difference. First operand 1951 states and 2731 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 03:19:35,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:36,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:36,568 INFO L93 Difference]: Finished difference Result 4706 states and 6695 transitions. [2021-12-18 03:19:36,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 03:19:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 207 [2021-12-18 03:19:36,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:36,580 INFO L225 Difference]: With dead ends: 4706 [2021-12-18 03:19:36,580 INFO L226 Difference]: Without dead ends: 2758 [2021-12-18 03:19:36,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:19:36,587 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 720 mSDsluCounter, 1581 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 327 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 2583 SdHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:36,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 2583 Invalid, 638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 310 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-12-18 03:19:36,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2758 states. [2021-12-18 03:19:36,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2758 to 2651. [2021-12-18 03:19:36,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2068 states have (on average 1.4361702127659575) internal successors, (2970), 2102 states have internal predecessors, (2970), 410 states have call successors, (410), 173 states have call predecessors, (410), 172 states have return successors, (414), 401 states have call predecessors, (414), 408 states have call successors, (414) [2021-12-18 03:19:36,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3794 transitions. [2021-12-18 03:19:36,682 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3794 transitions. Word has length 207 [2021-12-18 03:19:36,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:36,682 INFO L470 AbstractCegarLoop]: Abstraction has 2651 states and 3794 transitions. [2021-12-18 03:19:36,682 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 03:19:36,683 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3794 transitions. [2021-12-18 03:19:36,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2021-12-18 03:19:36,690 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:36,690 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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] [2021-12-18 03:19:36,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 03:19:36,690 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash 359231920, now seen corresponding path program 1 times [2021-12-18 03:19:36,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:36,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796410177] [2021-12-18 03:19:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:36,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:36,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:36,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:19:36,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:36,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 03:19:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:36,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:19:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:36,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:19:36,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 03:19:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:36,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 03:19:36,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:36,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-18 03:19:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:37,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 03:19:37,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:37,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:37,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:19:37,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 03:19:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 03:19:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:37,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 03:19:37,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 03:19:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:19:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:37,241 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 185 trivial. 0 not checked. [2021-12-18 03:19:37,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:37,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796410177] [2021-12-18 03:19:37,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796410177] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:37,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:37,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:19:37,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155269408] [2021-12-18 03:19:37,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:37,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:19:37,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:37,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:19:37,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:19:37,245 INFO L87 Difference]: Start difference. First operand 2651 states and 3794 transitions. Second operand has 6 states, 6 states have (on average 19.0) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 03:19:39,280 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:41,290 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:42,136 INFO L93 Difference]: Finished difference Result 5430 states and 7806 transitions. [2021-12-18 03:19:42,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 03:19:42,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 225 [2021-12-18 03:19:42,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:42,153 INFO L225 Difference]: With dead ends: 5430 [2021-12-18 03:19:42,153 INFO L226 Difference]: Without dead ends: 2782 [2021-12-18 03:19:42,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:19:42,165 INFO L933 BasicCegarLoop]: 959 mSDtfsCounter, 94 mSDsluCounter, 3057 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 123 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:42,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 4016 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 602 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2021-12-18 03:19:42,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2782 states. [2021-12-18 03:19:42,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2782 to 2667. [2021-12-18 03:19:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2080 states have (on average 1.4336538461538462) internal successors, (2982), 2116 states have internal predecessors, (2982), 412 states have call successors, (412), 173 states have call predecessors, (412), 174 states have return successors, (418), 403 states have call predecessors, (418), 410 states have call successors, (418) [2021-12-18 03:19:42,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3812 transitions. [2021-12-18 03:19:42,280 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3812 transitions. Word has length 225 [2021-12-18 03:19:42,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:42,281 INFO L470 AbstractCegarLoop]: Abstraction has 2667 states and 3812 transitions. [2021-12-18 03:19:42,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.0) internal successors, (114), 4 states have internal predecessors, (114), 2 states have call successors, (23), 4 states have call predecessors, (23), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-12-18 03:19:42,281 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3812 transitions. [2021-12-18 03:19:42,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-12-18 03:19:42,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:42,291 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1] [2021-12-18 03:19:42,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 03:19:42,292 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:42,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:42,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1388223033, now seen corresponding path program 1 times [2021-12-18 03:19:42,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:42,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471644516] [2021-12-18 03:19:42,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:42,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:19:42,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 03:19:42,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:19:42,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:19:42,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:19:42,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 03:19:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 03:19:42,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-18 03:19:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 03:19:42,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:19:42,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 03:19:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 03:19:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-18 03:19:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-18 03:19:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-18 03:19:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:42,748 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-18 03:19:42,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:42,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471644516] [2021-12-18 03:19:42,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471644516] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:42,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:42,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:19:42,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990330473] [2021-12-18 03:19:42,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:42,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:19:42,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:42,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:19:42,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:19:42,751 INFO L87 Difference]: Start difference. First operand 2667 states and 3812 transitions. Second operand has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 03:19:44,776 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:45,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:45,596 INFO L93 Difference]: Finished difference Result 5466 states and 7850 transitions. [2021-12-18 03:19:45,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 03:19:45,597 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 235 [2021-12-18 03:19:45,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:45,608 INFO L225 Difference]: With dead ends: 5466 [2021-12-18 03:19:45,609 INFO L226 Difference]: Without dead ends: 2802 [2021-12-18 03:19:45,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:19:45,616 INFO L933 BasicCegarLoop]: 972 mSDtfsCounter, 94 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 124 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 4056 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:45,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 4056 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 605 Invalid, 1 Unknown, 0 Unchecked, 2.7s Time] [2021-12-18 03:19:45,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2802 states. [2021-12-18 03:19:45,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2802 to 2677. [2021-12-18 03:19:45,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2677 states, 2088 states have (on average 1.431992337164751) internal successors, (2990), 2126 states have internal predecessors, (2990), 414 states have call successors, (414), 173 states have call predecessors, (414), 174 states have return successors, (420), 405 states have call predecessors, (420), 412 states have call successors, (420) [2021-12-18 03:19:45,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2677 states to 2677 states and 3824 transitions. [2021-12-18 03:19:45,708 INFO L78 Accepts]: Start accepts. Automaton has 2677 states and 3824 transitions. Word has length 235 [2021-12-18 03:19:45,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:45,709 INFO L470 AbstractCegarLoop]: Abstraction has 2677 states and 3824 transitions. [2021-12-18 03:19:45,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (24), 4 states have call predecessors, (24), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2021-12-18 03:19:45,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2677 states and 3824 transitions. [2021-12-18 03:19:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2021-12-18 03:19:45,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:45,717 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:19:45,718 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 03:19:45,718 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:45,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:45,719 INFO L85 PathProgramCache]: Analyzing trace with hash -545360257, now seen corresponding path program 1 times [2021-12-18 03:19:45,719 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:45,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078209650] [2021-12-18 03:19:45,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:45,719 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:19:45,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 03:19:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:19:45,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:19:45,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:19:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 03:19:45,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 03:19:45,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:45,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:19:45,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:45,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 03:19:45,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-18 03:19:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:45,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 03:19:46,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:46,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:46,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:19:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:46,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-18 03:19:46,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:46,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2021-12-18 03:19:46,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:46,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 03:19:46,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:46,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-18 03:19:46,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-18 03:19:46,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:46,145 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-18 03:19:46,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:46,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078209650] [2021-12-18 03:19:46,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078209650] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:46,146 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:46,146 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 03:19:46,146 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184714355] [2021-12-18 03:19:46,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:46,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 03:19:46,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:46,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 03:19:46,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:19:46,147 INFO L87 Difference]: Start difference. First operand 2677 states and 3824 transitions. Second operand has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 03:19:48,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:50,259 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:51,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:51,107 INFO L93 Difference]: Finished difference Result 5586 states and 8042 transitions. [2021-12-18 03:19:51,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 03:19:51,107 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 258 [2021-12-18 03:19:51,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:51,120 INFO L225 Difference]: With dead ends: 5586 [2021-12-18 03:19:51,120 INFO L226 Difference]: Without dead ends: 2912 [2021-12-18 03:19:51,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 03:19:51,128 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 114 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 529 mSolverCounterSat, 131 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 3109 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 529 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:51,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 3109 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 529 Invalid, 2 Unknown, 0 Unchecked, 4.8s Time] [2021-12-18 03:19:51,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2912 states. [2021-12-18 03:19:51,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2912 to 2685. [2021-12-18 03:19:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2685 states, 2096 states have (on average 1.4303435114503817) internal successors, (2998), 2134 states have internal predecessors, (2998), 414 states have call successors, (414), 173 states have call predecessors, (414), 174 states have return successors, (420), 405 states have call predecessors, (420), 412 states have call successors, (420) [2021-12-18 03:19:51,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2685 states to 2685 states and 3832 transitions. [2021-12-18 03:19:51,228 INFO L78 Accepts]: Start accepts. Automaton has 2685 states and 3832 transitions. Word has length 258 [2021-12-18 03:19:51,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:51,229 INFO L470 AbstractCegarLoop]: Abstraction has 2685 states and 3832 transitions. [2021-12-18 03:19:51,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.2) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (27), 4 states have call predecessors, (27), 1 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-18 03:19:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 2685 states and 3832 transitions. [2021-12-18 03:19:51,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2021-12-18 03:19:51,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:51,238 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:19:51,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 03:19:51,239 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:51,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:51,239 INFO L85 PathProgramCache]: Analyzing trace with hash 1926780935, now seen corresponding path program 1 times [2021-12-18 03:19:51,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:51,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454909151] [2021-12-18 03:19:51,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:51,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:51,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:19:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 03:19:51,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:19:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:19:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:19:51,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 03:19:51,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 03:19:51,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:19:51,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 03:19:51,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 03:19:51,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 03:19:51,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 03:19:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:19:51,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 03:19:51,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-18 03:19:51,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-18 03:19:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:51,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-18 03:19:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-18 03:19:51,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:51,715 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-12-18 03:19:51,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:51,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454909151] [2021-12-18 03:19:51,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454909151] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:51,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 03:19:51,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 03:19:51,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640978914] [2021-12-18 03:19:51,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:51,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 03:19:51,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:51,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 03:19:51,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 03:19:51,717 INFO L87 Difference]: Start difference. First operand 2685 states and 3832 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 03:19:53,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:54,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:54,455 INFO L93 Difference]: Finished difference Result 5506 states and 7898 transitions. [2021-12-18 03:19:54,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 03:19:54,456 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 267 [2021-12-18 03:19:54,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:54,466 INFO L225 Difference]: With dead ends: 5506 [2021-12-18 03:19:54,466 INFO L226 Difference]: Without dead ends: 2824 [2021-12-18 03:19:54,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:19:54,472 INFO L933 BasicCegarLoop]: 966 mSDtfsCounter, 179 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 237 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 3439 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 237 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:54,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 3439 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [237 Valid, 385 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-12-18 03:19:54,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2824 states. [2021-12-18 03:19:54,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2824 to 2695. [2021-12-18 03:19:54,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2695 states, 2104 states have (on average 1.4287072243346008) internal successors, (3006), 2144 states have internal predecessors, (3006), 416 states have call successors, (416), 173 states have call predecessors, (416), 174 states have return successors, (422), 407 states have call predecessors, (422), 414 states have call successors, (422) [2021-12-18 03:19:54,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2695 states to 2695 states and 3844 transitions. [2021-12-18 03:19:54,549 INFO L78 Accepts]: Start accepts. Automaton has 2695 states and 3844 transitions. Word has length 267 [2021-12-18 03:19:54,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:54,549 INFO L470 AbstractCegarLoop]: Abstraction has 2695 states and 3844 transitions. [2021-12-18 03:19:54,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (28), 4 states have call predecessors, (28), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 03:19:54,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2695 states and 3844 transitions. [2021-12-18 03:19:54,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2021-12-18 03:19:54,557 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:54,557 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:19:54,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 03:19:54,557 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:54,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:54,558 INFO L85 PathProgramCache]: Analyzing trace with hash -444655922, now seen corresponding path program 1 times [2021-12-18 03:19:54,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:54,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689857111] [2021-12-18 03:19:54,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:54,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:19:54,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 03:19:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:19:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:19:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:19:54,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 03:19:54,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 03:19:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:19:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 03:19:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 03:19:54,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 03:19:54,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 03:19:54,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:19:54,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 03:19:54,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:19:54,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 03:19:54,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 03:19:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-18 03:19:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2021-12-18 03:19:54,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:54,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689857111] [2021-12-18 03:19:54,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689857111] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:19:54,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659441504] [2021-12-18 03:19:54,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:54,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:19:54,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:19:54,974 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) [2021-12-18 03:19:54,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 03:19:56,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:56,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 4498 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:19:56,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:19:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-12-18 03:19:56,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 03:19:56,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659441504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 03:19:56,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 03:19:56,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2021-12-18 03:19:56,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84987467] [2021-12-18 03:19:56,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 03:19:56,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 03:19:56,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:19:56,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 03:19:56,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:19:56,515 INFO L87 Difference]: Start difference. First operand 2695 states and 3844 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 03:19:58,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:19:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:19:58,693 INFO L93 Difference]: Finished difference Result 3502 states and 4842 transitions. [2021-12-18 03:19:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 03:19:58,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 271 [2021-12-18 03:19:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:19:58,704 INFO L225 Difference]: With dead ends: 3502 [2021-12-18 03:19:58,705 INFO L226 Difference]: Without dead ends: 2683 [2021-12-18 03:19:58,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 329 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 03:19:58,708 INFO L933 BasicCegarLoop]: 1358 mSDtfsCounter, 403 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 2301 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 03:19:58,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 2301 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2021-12-18 03:19:58,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2021-12-18 03:19:58,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2667. [2021-12-18 03:19:58,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2088 states have (on average 1.4295977011494252) internal successors, (2985), 2122 states have internal predecessors, (2985), 408 states have call successors, (408), 172 states have call predecessors, (408), 170 states have return successors, (406), 398 states have call predecessors, (406), 406 states have call successors, (406) [2021-12-18 03:19:58,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3799 transitions. [2021-12-18 03:19:58,787 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3799 transitions. Word has length 271 [2021-12-18 03:19:58,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:19:58,788 INFO L470 AbstractCegarLoop]: Abstraction has 2667 states and 3799 transitions. [2021-12-18 03:19:58,788 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 3 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 03:19:58,788 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3799 transitions. [2021-12-18 03:19:58,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2021-12-18 03:19:58,803 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:19:58,804 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:19:58,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 03:19:59,017 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,SelfDestructingSolverStorable12 [2021-12-18 03:19:59,017 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:19:59,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:19:59,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1405236378, now seen corresponding path program 1 times [2021-12-18 03:19:59,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:19:59,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612816889] [2021-12-18 03:19:59,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:59,018 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:19:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:19:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 03:19:59,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:19:59,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:19:59,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:19:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 03:19:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 03:19:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:19:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 03:19:59,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 03:19:59,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 03:19:59,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 03:19:59,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:19:59,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 03:19:59,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 03:19:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-18 03:19:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 03:19:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-12-18 03:19:59,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-12-18 03:19:59,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-12-18 03:19:59,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-12-18 03:19:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 299 [2021-12-18 03:19:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 307 [2021-12-18 03:19:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2021-12-18 03:19:59,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2021-12-18 03:19:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 339 [2021-12-18 03:19:59,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 353 [2021-12-18 03:19:59,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2021-12-18 03:19:59,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 384 [2021-12-18 03:19:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 402 [2021-12-18 03:19:59,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:19:59,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 437 [2021-12-18 03:19:59,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 451 [2021-12-18 03:19:59,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 465 [2021-12-18 03:19:59,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:19:59,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 481 [2021-12-18 03:19:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:19:59,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-12-18 03:19:59,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:19:59,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612816889] [2021-12-18 03:19:59,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612816889] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:19:59,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1242783374] [2021-12-18 03:19:59,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:19:59,665 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:19:59,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:19:59,666 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) [2021-12-18 03:19:59,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 03:20:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:01,168 INFO L263 TraceCheckSpWp]: Trace formula consists of 7010 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 03:20:01,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 03:20:01,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 361 proven. 1 refuted. 0 times theorem prover too weak. 822 trivial. 0 not checked. [2021-12-18 03:20:01,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 03:20:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1184 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 1128 trivial. 0 not checked. [2021-12-18 03:20:02,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1242783374] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 03:20:02,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 03:20:02,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 8 [2021-12-18 03:20:02,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221174440] [2021-12-18 03:20:02,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 03:20:02,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 03:20:02,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 03:20:02,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 03:20:02,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:20:02,720 INFO L87 Difference]: Start difference. First operand 2667 states and 3799 transitions. Second operand has 8 states, 8 states have (on average 30.25) internal successors, (242), 6 states have internal predecessors, (242), 5 states have call successors, (91), 4 states have call predecessors, (91), 2 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) [2021-12-18 03:20:04,746 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 03:20:05,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 03:20:05,442 INFO L93 Difference]: Finished difference Result 5693 states and 8187 transitions. [2021-12-18 03:20:05,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 03:20:05,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 6 states have internal predecessors, (242), 5 states have call successors, (91), 4 states have call predecessors, (91), 2 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) Word has length 497 [2021-12-18 03:20:05,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 03:20:05,454 INFO L225 Difference]: With dead ends: 5693 [2021-12-18 03:20:05,454 INFO L226 Difference]: Without dead ends: 3029 [2021-12-18 03:20:05,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1114 GetRequests, 1108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-18 03:20:05,462 INFO L933 BasicCegarLoop]: 977 mSDtfsCounter, 297 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 371 mSolverCounterSat, 292 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 2577 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 292 IncrementalHoareTripleChecker+Valid, 371 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-18 03:20:05,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [334 Valid, 2577 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [292 Valid, 371 Invalid, 1 Unknown, 0 Unchecked, 2.6s Time] [2021-12-18 03:20:05,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2021-12-18 03:20:05,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 2923. [2021-12-18 03:20:05,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2272 states have (on average 1.4159330985915493) internal successors, (3217), 2306 states have internal predecessors, (3217), 480 states have call successors, (480), 172 states have call predecessors, (480), 170 states have return successors, (478), 470 states have call predecessors, (478), 478 states have call successors, (478) [2021-12-18 03:20:05,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 4175 transitions. [2021-12-18 03:20:05,548 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 4175 transitions. Word has length 497 [2021-12-18 03:20:05,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 03:20:05,549 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 4175 transitions. [2021-12-18 03:20:05,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 30.25) internal successors, (242), 6 states have internal predecessors, (242), 5 states have call successors, (91), 4 states have call predecessors, (91), 2 states have return successors, (60), 5 states have call predecessors, (60), 5 states have call successors, (60) [2021-12-18 03:20:05,549 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 4175 transitions. [2021-12-18 03:20:05,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 534 [2021-12-18 03:20:05,563 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 03:20:05,563 INFO L514 BasicCegarLoop]: trace histogram [16, 16, 16, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 03:20:05,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 03:20:05,787 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,SelfDestructingSolverStorable13 [2021-12-18 03:20:05,788 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 03:20:05,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 03:20:05,788 INFO L85 PathProgramCache]: Analyzing trace with hash 208799770, now seen corresponding path program 2 times [2021-12-18 03:20:05,789 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 03:20:05,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024640112] [2021-12-18 03:20:05,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 03:20:05,789 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 03:20:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 03:20:06,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 03:20:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 03:20:06,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-18 03:20:06,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-18 03:20:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 03:20:06,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 03:20:06,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 03:20:06,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 03:20:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-18 03:20:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 03:20:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 03:20:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 03:20:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-18 03:20:06,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:20:06,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-18 03:20:06,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-18 03:20:06,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-18 03:20:06,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-18 03:20:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-18 03:20:06,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 290 [2021-12-18 03:20:06,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 298 [2021-12-18 03:20:06,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-18 03:20:06,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-18 03:20:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2021-12-18 03:20:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2021-12-18 03:20:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 345 [2021-12-18 03:20:06,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2021-12-18 03:20:06,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 371 [2021-12-18 03:20:06,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 394 [2021-12-18 03:20:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2021-12-18 03:20:06,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 412 [2021-12-18 03:20:06,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 420 [2021-12-18 03:20:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 438 [2021-12-18 03:20:06,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 03:20:06,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 473 [2021-12-18 03:20:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 487 [2021-12-18 03:20:06,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 501 [2021-12-18 03:20:06,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 03:20:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2021-12-18 03:20:06,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 03:20:06,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1318 backedges. 121 proven. 14 refuted. 0 times theorem prover too weak. 1183 trivial. 0 not checked. [2021-12-18 03:20:06,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 03:20:06,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024640112] [2021-12-18 03:20:06,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024640112] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 03:20:06,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [960866677] [2021-12-18 03:20:06,679 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 03:20:06,679 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 03:20:06,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 03:20:06,680 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) [2021-12-18 03:20:06,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process Killed by 15