./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y --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 b615ef3e9ec848bbbdbcac9993fc5d609594ef1caaa279a862c4f038e6ec482e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:50:29,592 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:50:29,596 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:50:29,649 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:50:29,650 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:50:29,654 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:50:29,656 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:50:29,660 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:50:29,663 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:50:29,669 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:50:29,670 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:50:29,672 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:50:29,673 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:50:29,676 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:50:29,678 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:50:29,683 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:50:29,685 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:50:29,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:50:29,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:50:29,701 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:50:29,703 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:50:29,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:50:29,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:50:29,709 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:50:29,719 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:50:29,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:50:29,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:50:29,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:50:29,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:50:29,725 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:50:29,726 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:50:29,727 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:50:29,729 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:50:29,731 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:50:29,733 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:50:29,733 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:50:29,734 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:50:29,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:50:29,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:50:29,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:50:29,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:50:29,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:50:29,781 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:50:29,781 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:50:29,782 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:50:29,782 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:50:29,783 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:50:29,783 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:50:29,785 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:50:29,785 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:50:29,785 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:50:29,785 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:50:29,786 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:50:29,786 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:50:29,787 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:50:29,787 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:50:29,787 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:50:29,787 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:50:29,787 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:50:29,787 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:50:29,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:50:29,788 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:50:29,788 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:50:29,788 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:50:29,788 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:50:29,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:50:29,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:50:29,788 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:50:29,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:50:29,789 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:50:29,789 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:50:29,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:50:29,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:50:29,789 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b615ef3e9ec848bbbdbcac9993fc5d609594ef1caaa279a862c4f038e6ec482e [2021-11-13 17:50:30,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:50:30,097 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:50:30,100 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:50:30,102 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:50:30,103 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:50:30,104 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2021-11-13 17:50:30,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/data/f30d0d122/6c188c6dabbb4dbf9de15528a1a1c59e/FLAG09b3b5d8e [2021-11-13 17:50:31,138 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:50:31,140 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2021-11-13 17:50:31,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/data/f30d0d122/6c188c6dabbb4dbf9de15528a1a1c59e/FLAG09b3b5d8e [2021-11-13 17:50:31,549 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/data/f30d0d122/6c188c6dabbb4dbf9de15528a1a1c59e [2021-11-13 17:50:31,551 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:50:31,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:50:31,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:50:31,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:50:31,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:50:31,563 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:50:31" (1/1) ... [2021-11-13 17:50:31,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44fc5eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:31, skipping insertion in model container [2021-11-13 17:50:31,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:50:31" (1/1) ... [2021-11-13 17:50:31,569 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:50:31,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:50:33,142 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i[208194,208207] [2021-11-13 17:50:33,189 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:50:33,229 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:50:33,527 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i[208194,208207] [2021-11-13 17:50:33,540 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:50:33,681 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:50:33,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33 WrapperNode [2021-11-13 17:50:33,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:50:33,686 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:50:33,686 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:50:33,686 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:50:33,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:33,771 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:33,896 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:50:33,897 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:50:33,897 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:50:33,897 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:50:33,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:33,906 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:33,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:33,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:34,022 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:34,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:34,047 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:34,068 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:50:34,069 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:50:34,069 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:50:34,069 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:50:34,070 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (1/1) ... [2021-11-13 17:50:34,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:50:34,091 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:50:34,103 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:50:34,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:50:34,195 INFO L130 BoogieDeclarations]: Found specification of procedure atp_probe1 [2021-11-13 17:50:34,197 INFO L138 BoogieDeclarations]: Found implementation of procedure atp_probe1 [2021-11-13 17:50:34,197 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg [2021-11-13 17:50:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg [2021-11-13 17:50:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure read_block [2021-11-13 17:50:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure read_block [2021-11-13 17:50:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:50:34,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:50:34,198 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:50:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-13 17:50:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-13 17:50:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure set_rx_mode [2021-11-13 17:50:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure set_rx_mode [2021-11-13 17:50:34,199 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-13 17:50:34,199 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-13 17:50:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write_byte_mode0 [2021-11-13 17:50:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure write_byte_mode0 [2021-11-13 17:50:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure write_byte_mode1 [2021-11-13 17:50:34,200 INFO L138 BoogieDeclarations]: Found implementation of procedure write_byte_mode1 [2021-11-13 17:50:34,200 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-13 17:50:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-13 17:50:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-13 17:50:34,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-13 17:50:34,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:50:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:50:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-13 17:50:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-13 17:50:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure tx_timeout [2021-11-13 17:50:34,202 INFO L138 BoogieDeclarations]: Found implementation of procedure tx_timeout [2021-11-13 17:50:34,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:50:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure net_rx [2021-11-13 17:50:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure net_rx [2021-11-13 17:50:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:50:34,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:50:34,203 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg_high [2021-11-13 17:50:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg_high [2021-11-13 17:50:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-13 17:50:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-13 17:50:34,204 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:50:34,204 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:50:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-13 17:50:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-13 17:50:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure read_nibble [2021-11-13 17:50:34,205 INFO L138 BoogieDeclarations]: Found implementation of procedure read_nibble [2021-11-13 17:50:34,205 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:50:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure hardware_init [2021-11-13 17:50:34,206 INFO L138 BoogieDeclarations]: Found implementation of procedure hardware_init [2021-11-13 17:50:34,206 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:50:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:50:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-13 17:50:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-13 17:50:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2021-11-13 17:50:34,207 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2021-11-13 17:50:34,207 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-13 17:50:34,208 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-13 17:50:34,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:50:34,209 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-13 17:50:34,209 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-13 17:50:34,210 INFO L130 BoogieDeclarations]: Found specification of procedure write_reg_byte [2021-11-13 17:50:34,211 INFO L138 BoogieDeclarations]: Found implementation of procedure write_reg_byte [2021-11-13 17:50:34,211 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-13 17:50:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-13 17:50:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-13 17:50:34,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-13 17:50:34,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:50:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:50:34,213 INFO L130 BoogieDeclarations]: Found specification of procedure inbyte [2021-11-13 17:50:34,213 INFO L138 BoogieDeclarations]: Found implementation of procedure inbyte [2021-11-13 17:50:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure trigger_send [2021-11-13 17:50:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure trigger_send [2021-11-13 17:50:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-13 17:50:34,214 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-13 17:50:34,214 INFO L130 BoogieDeclarations]: Found specification of procedure inb [2021-11-13 17:50:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure inb [2021-11-13 17:50:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure eth_change_mtu [2021-11-13 17:50:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_change_mtu [2021-11-13 17:50:34,215 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-13 17:50:34,215 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-13 17:50:34,216 INFO L130 BoogieDeclarations]: Found specification of procedure outb [2021-11-13 17:50:34,216 INFO L138 BoogieDeclarations]: Found implementation of procedure outb [2021-11-13 17:50:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-13 17:50:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-13 17:50:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure eeprom_op [2021-11-13 17:50:34,217 INFO L138 BoogieDeclarations]: Found implementation of procedure eeprom_op [2021-11-13 17:50:34,217 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-13 17:50:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-13 17:50:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:50:34,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:50:34,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:50:35,327 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:50:36,472 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:50:36,473 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 17:50:36,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:50:36 BoogieIcfgContainer [2021-11-13 17:50:36,478 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:50:36,480 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:50:36,480 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:50:36,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:50:36,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:50:31" (1/3) ... [2021-11-13 17:50:36,486 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5e5a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:50:36, skipping insertion in model container [2021-11-13 17:50:36,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:50:33" (2/3) ... [2021-11-13 17:50:36,487 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7d5e5a53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:50:36, skipping insertion in model container [2021-11-13 17:50:36,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:50:36" (3/3) ... [2021-11-13 17:50:36,489 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--realtek--atp.ko-entry_point.cil.out.i [2021-11-13 17:50:36,498 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:50:36,498 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:50:36,570 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:50:36,578 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 [2021-11-13 17:50:36,578 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:50:36,639 INFO L276 IsEmpty]: Start isEmpty. Operand has 735 states, 472 states have (on average 1.3241525423728813) internal successors, (625), 487 states have internal predecessors, (625), 223 states have call successors, (223), 39 states have call predecessors, (223), 38 states have return successors, (218), 216 states have call predecessors, (218), 218 states have call successors, (218) [2021-11-13 17:50:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-11-13 17:50:36,726 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:36,727 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:50:36,728 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:36,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:36,735 INFO L85 PathProgramCache]: Analyzing trace with hash -764789626, now seen corresponding path program 1 times [2021-11-13 17:50:36,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:36,750 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029948364] [2021-11-13 17:50:36,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:36,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:37,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:37,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:37,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:50:37,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:50:37,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:50:37,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:37,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:50:37,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:50:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:37,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:37,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:37,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:37,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:50:37,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:37,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:37,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:37,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 17:50:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:50:37,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:50:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:50:37,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-13 17:50:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:37,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:37,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:37,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:38,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:38,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:38,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:38,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-11-13 17:50:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:50:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:50:38,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:38,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:50:38,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-13 17:50:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2021-11-13 17:50:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-11-13 17:50:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:50:38,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:50:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:50:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:50:38,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:38,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:38,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:38,256 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2021-11-13 17:50:38,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:38,257 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029948364] [2021-11-13 17:50:38,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029948364] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:38,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:38,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 17:50:38,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308318564] [2021-11-13 17:50:38,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:38,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 17:50:38,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:38,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 17:50:38,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-13 17:50:38,311 INFO L87 Difference]: Start difference. First operand has 735 states, 472 states have (on average 1.3241525423728813) internal successors, (625), 487 states have internal predecessors, (625), 223 states have call successors, (223), 39 states have call predecessors, (223), 38 states have return successors, (218), 216 states have call predecessors, (218), 218 states have call successors, (218) Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 17:50:41,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:41,662 INFO L93 Difference]: Finished difference Result 1555 states and 2291 transitions. [2021-11-13 17:50:41,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 17:50:41,665 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) Word has length 292 [2021-11-13 17:50:41,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:41,694 INFO L225 Difference]: With dead ends: 1555 [2021-11-13 17:50:41,695 INFO L226 Difference]: Without dead ends: 803 [2021-11-13 17:50:41,711 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:50:41,715 INFO L933 BasicCegarLoop]: 893 mSDtfsCounter, 724 mSDsluCounter, 1225 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 1114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2589.02ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 771 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 48.29ms SdHoareTripleChecker+Time, 1114 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3030.70ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:41,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [771 Valid, 2118 Invalid, 2316 Unknown, 0 Unchecked, 48.29ms Time], IncrementalHoareTripleChecker [1114 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 3030.70ms Time] [2021-11-13 17:50:41,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-11-13 17:50:41,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 713. [2021-11-13 17:50:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 459 states have (on average 1.3115468409586057) internal successors, (602), 467 states have internal predecessors, (602), 216 states have call successors, (216), 38 states have call predecessors, (216), 37 states have return successors, (215), 213 states have call predecessors, (215), 215 states have call successors, (215) [2021-11-13 17:50:41,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 1033 transitions. [2021-11-13 17:50:41,931 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 1033 transitions. Word has length 292 [2021-11-13 17:50:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:41,934 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 1033 transitions. [2021-11-13 17:50:41,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 2 states have internal predecessors, (78), 2 states have call successors, (38), 6 states have call predecessors, (38), 2 states have return successors, (34), 2 states have call predecessors, (34), 2 states have call successors, (34) [2021-11-13 17:50:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 1033 transitions. [2021-11-13 17:50:41,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-11-13 17:50:41,952 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:41,953 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:50:41,953 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:50:41,954 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:41,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:41,955 INFO L85 PathProgramCache]: Analyzing trace with hash 2126471959, now seen corresponding path program 1 times [2021-11-13 17:50:41,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:41,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048665432] [2021-11-13 17:50:41,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:41,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:42,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:42,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:42,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:50:42,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:42,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-11-13 17:50:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:50:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:42,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:50:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-11-13 17:50:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:42,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:42,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:42,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-11-13 17:50:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:42,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:42,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-11-13 17:50:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:42,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:50:42,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:50:42,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:42,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:50:42,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-11-13 17:50:42,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:42,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:42,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:42,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-11-13 17:50:42,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:42,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:50:42,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:50:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:50:42,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-11-13 17:50:42,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:42,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-11-13 17:50:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-11-13 17:50:42,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 283 [2021-11-13 17:50:42,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:50:42,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:50:42,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:50:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:50:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:42,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:42,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:42,856 INFO L134 CoverageAnalysis]: Checked inductivity of 2452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2452 trivial. 0 not checked. [2021-11-13 17:50:42,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:42,857 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048665432] [2021-11-13 17:50:42,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048665432] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:42,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:42,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:50:42,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685760916] [2021-11-13 17:50:42,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:42,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:50:42,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:42,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:50:42,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:50:42,862 INFO L87 Difference]: Start difference. First operand 713 states and 1033 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (46), 7 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-13 17:50:49,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:49,311 INFO L93 Difference]: Finished difference Result 2308 states and 3378 transitions. [2021-11-13 17:50:49,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:50:49,312 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (46), 7 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 327 [2021-11-13 17:50:49,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:49,335 INFO L225 Difference]: With dead ends: 2308 [2021-11-13 17:50:49,335 INFO L226 Difference]: Without dead ends: 1605 [2021-11-13 17:50:49,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-13 17:50:49,349 INFO L933 BasicCegarLoop]: 956 mSDtfsCounter, 2150 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 3208 mSolverCounterSat, 2580 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4814.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2286 SdHoareTripleChecker+Valid, 3827 SdHoareTripleChecker+Invalid, 5788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 85.73ms SdHoareTripleChecker+Time, 2580 IncrementalHoareTripleChecker+Valid, 3208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5878.77ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:49,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2286 Valid, 3827 Invalid, 5788 Unknown, 0 Unchecked, 85.73ms Time], IncrementalHoareTripleChecker [2580 Valid, 3208 Invalid, 0 Unknown, 0 Unchecked, 5878.77ms Time] [2021-11-13 17:50:49,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2021-11-13 17:50:49,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1416. [2021-11-13 17:50:49,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 911 states have (on average 1.3084522502744238) internal successors, (1192), 927 states have internal predecessors, (1192), 429 states have call successors, (429), 76 states have call predecessors, (429), 75 states have return successors, (428), 424 states have call predecessors, (428), 428 states have call successors, (428) [2021-11-13 17:50:49,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2049 transitions. [2021-11-13 17:50:49,557 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2049 transitions. Word has length 327 [2021-11-13 17:50:49,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:49,559 INFO L470 AbstractCegarLoop]: Abstraction has 1416 states and 2049 transitions. [2021-11-13 17:50:49,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 4 states have internal predecessors, (83), 3 states have call successors, (46), 7 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-13 17:50:49,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2049 transitions. [2021-11-13 17:50:49,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-11-13 17:50:49,578 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:49,579 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:50:49,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:50:49,579 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:49,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:49,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1666869582, now seen corresponding path program 1 times [2021-11-13 17:50:49,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:49,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447166049] [2021-11-13 17:50:49,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:49,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:49,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:49,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:49,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:50:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:49,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:49,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-11-13 17:50:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-11-13 17:50:49,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:49,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-11-13 17:50:49,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:50:49,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:49,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:49,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:49,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:49,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:49,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-11-13 17:50:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:49,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:49,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:49,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-11-13 17:50:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:50:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:50:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:50:50,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-11-13 17:50:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:50,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:50,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:50,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-11-13 17:50:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:50:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:50:50,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:50,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:50:50,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-11-13 17:50:50,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:50,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:50,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:50,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:50,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:50,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 272 [2021-11-13 17:50:50,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-11-13 17:50:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2021-11-13 17:50:50,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:50:50,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:50:50,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:50:50,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:50:50,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:50,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:50,376 INFO L134 CoverageAnalysis]: Checked inductivity of 2452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2452 trivial. 0 not checked. [2021-11-13 17:50:50,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:50,377 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447166049] [2021-11-13 17:50:50,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447166049] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:50,377 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:50,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:50:50,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833473468] [2021-11-13 17:50:50,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:50,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:50:50,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:50,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:50:50,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:50:50,381 INFO L87 Difference]: Start difference. First operand 1416 states and 2049 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (46), 7 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-13 17:50:58,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:50:58,058 INFO L93 Difference]: Finished difference Result 4604 states and 6724 transitions. [2021-11-13 17:50:58,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:50:58,059 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (46), 7 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 326 [2021-11-13 17:50:58,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:50:58,095 INFO L225 Difference]: With dead ends: 4604 [2021-11-13 17:50:58,096 INFO L226 Difference]: Without dead ends: 3198 [2021-11-13 17:50:58,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-13 17:50:58,110 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 2143 mSDsluCounter, 3259 mSDsCounter, 0 mSdLazyCounter, 3645 mSolverCounterSat, 2546 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5953.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2279 SdHoareTripleChecker+Valid, 4240 SdHoareTripleChecker+Invalid, 6191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 86.70ms SdHoareTripleChecker+Time, 2546 IncrementalHoareTripleChecker+Valid, 3645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6965.31ms IncrementalHoareTripleChecker+Time [2021-11-13 17:50:58,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2279 Valid, 4240 Invalid, 6191 Unknown, 0 Unchecked, 86.70ms Time], IncrementalHoareTripleChecker [2546 Valid, 3645 Invalid, 0 Unknown, 0 Unchecked, 6965.31ms Time] [2021-11-13 17:50:58,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-11-13 17:50:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 2809. [2021-11-13 17:50:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 1803 states have (on average 1.3072656683305601) internal successors, (2357), 1842 states have internal predecessors, (2357), 854 states have call successors, (854), 152 states have call predecessors, (854), 151 states have return successors, (853), 838 states have call predecessors, (853), 853 states have call successors, (853) [2021-11-13 17:50:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 4064 transitions. [2021-11-13 17:50:58,386 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 4064 transitions. Word has length 326 [2021-11-13 17:50:58,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:50:58,387 INFO L470 AbstractCegarLoop]: Abstraction has 2809 states and 4064 transitions. [2021-11-13 17:50:58,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 4 states have internal predecessors, (82), 3 states have call successors, (46), 7 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-13 17:50:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 4064 transitions. [2021-11-13 17:50:58,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2021-11-13 17:50:58,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:50:58,416 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:50:58,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:50:58,416 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:50:58,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:50:58,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1962599507, now seen corresponding path program 1 times [2021-11-13 17:50:58,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:50:58,422 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617228526] [2021-11-13 17:50:58,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:50:58,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:50:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:50:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:58,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:50:58,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:58,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-11-13 17:50:58,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-11-13 17:50:58,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 17:50:58,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-13 17:50:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:58,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:58,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:58,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:58,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:58,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-11-13 17:50:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:58,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-11-13 17:50:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:50:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:58,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:50:58,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:59,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:50:59,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-11-13 17:50:59,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:59,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:50:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:50:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:50:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:50:59,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-11-13 17:50:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:50:59,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:50:59,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:50:59,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:50:59,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:50:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-11-13 17:50:59,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2021-11-13 17:50:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-13 17:50:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:50:59,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:50:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:50:59,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:50:59,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:50:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:50:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:50:59,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1696 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2021-11-13 17:50:59,286 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:50:59,286 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617228526] [2021-11-13 17:50:59,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617228526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:50:59,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:50:59,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:50:59,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138160878] [2021-11-13 17:50:59,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:50:59,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:50:59,288 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:50:59,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:50:59,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:50:59,290 INFO L87 Difference]: Start difference. First operand 2809 states and 4064 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (38), 7 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 17:51:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:05,653 INFO L93 Difference]: Finished difference Result 9170 states and 13376 transitions. [2021-11-13 17:51:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:51:05,654 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (38), 7 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) Word has length 294 [2021-11-13 17:51:05,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:05,735 INFO L225 Difference]: With dead ends: 9170 [2021-11-13 17:51:05,735 INFO L226 Difference]: Without dead ends: 6371 [2021-11-13 17:51:05,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-13 17:51:05,767 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 2646 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 2779 mSolverCounterSat, 3333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4677.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2782 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 6112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 62.35ms SdHoareTripleChecker+Time, 3333 IncrementalHoareTripleChecker+Valid, 2779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5566.12ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:05,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2782 Valid, 3514 Invalid, 6112 Unknown, 0 Unchecked, 62.35ms Time], IncrementalHoareTripleChecker [3333 Valid, 2779 Invalid, 0 Unknown, 0 Unchecked, 5566.12ms Time] [2021-11-13 17:51:05,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6371 states. [2021-11-13 17:51:06,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6371 to 5612. [2021-11-13 17:51:06,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5612 states, 3604 states have (on average 1.3054938956714761) internal successors, (4705), 3680 states have internal predecessors, (4705), 1703 states have call successors, (1703), 305 states have call predecessors, (1703), 304 states have return successors, (1702), 1674 states have call predecessors, (1702), 1702 states have call successors, (1702) [2021-11-13 17:51:06,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5612 states to 5612 states and 8110 transitions. [2021-11-13 17:51:06,401 INFO L78 Accepts]: Start accepts. Automaton has 5612 states and 8110 transitions. Word has length 294 [2021-11-13 17:51:06,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:06,402 INFO L470 AbstractCegarLoop]: Abstraction has 5612 states and 8110 transitions. [2021-11-13 17:51:06,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 4 states have internal predecessors, (80), 3 states have call successors, (38), 7 states have call predecessors, (38), 1 states have return successors, (34), 3 states have call predecessors, (34), 3 states have call successors, (34) [2021-11-13 17:51:06,403 INFO L276 IsEmpty]: Start isEmpty. Operand 5612 states and 8110 transitions. [2021-11-13 17:51:06,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2021-11-13 17:51:06,432 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:06,432 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:51:06,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:51:06,433 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:06,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:06,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1156520858, now seen corresponding path program 1 times [2021-11-13 17:51:06,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:06,434 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747468568] [2021-11-13 17:51:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:06,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:06,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:51:06,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:06,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:06,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-11-13 17:51:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 17:51:06,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:51:06,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-11-13 17:51:06,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:06,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:06,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:06,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:06,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:06,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-11-13 17:51:06,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:06,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-11-13 17:51:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:06,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-11-13 17:51:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:06,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-11-13 17:51:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:07,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:07,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:07,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:07,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-11-13 17:51:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:07,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:07,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:07,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:07,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:07,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-13 17:51:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2021-11-13 17:51:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 285 [2021-11-13 17:51:07,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:51:07,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:51:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:51:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:51:07,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:07,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:07,206 INFO L134 CoverageAnalysis]: Checked inductivity of 2452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2452 trivial. 0 not checked. [2021-11-13 17:51:07,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:07,207 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747468568] [2021-11-13 17:51:07,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747468568] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:07,207 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:51:07,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 17:51:07,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750513989] [2021-11-13 17:51:07,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:07,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:51:07,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:07,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:51:07,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:51:07,212 INFO L87 Difference]: Start difference. First operand 5612 states and 8110 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (46), 7 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-13 17:51:13,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:13,879 INFO L93 Difference]: Finished difference Result 18081 states and 26296 transitions. [2021-11-13 17:51:13,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 17:51:13,879 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (46), 7 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) Word has length 329 [2021-11-13 17:51:13,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:14,005 INFO L225 Difference]: With dead ends: 18081 [2021-11-13 17:51:14,005 INFO L226 Difference]: Without dead ends: 12479 [2021-11-13 17:51:14,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=253, Unknown=0, NotChecked=0, Total=380 [2021-11-13 17:51:14,047 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 2647 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 2779 mSolverCounterSat, 3333 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4703.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2783 SdHoareTripleChecker+Valid, 3514 SdHoareTripleChecker+Invalid, 6112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 54.60ms SdHoareTripleChecker+Time, 3333 IncrementalHoareTripleChecker+Valid, 2779 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5596.22ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:14,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2783 Valid, 3514 Invalid, 6112 Unknown, 0 Unchecked, 54.60ms Time], IncrementalHoareTripleChecker [3333 Valid, 2779 Invalid, 0 Unknown, 0 Unchecked, 5596.22ms Time] [2021-11-13 17:51:14,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12479 states. [2021-11-13 17:51:14,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12479 to 11053. [2021-11-13 17:51:14,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11053 states, 7108 states have (on average 1.3028981429375353) internal successors, (9261), 7251 states have internal predecessors, (9261), 3336 states have call successors, (3336), 609 states have call predecessors, (3336), 608 states have return successors, (3335), 3285 states have call predecessors, (3335), 3335 states have call successors, (3335) [2021-11-13 17:51:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11053 states to 11053 states and 15932 transitions. [2021-11-13 17:51:15,061 INFO L78 Accepts]: Start accepts. Automaton has 11053 states and 15932 transitions. Word has length 329 [2021-11-13 17:51:15,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:15,065 INFO L470 AbstractCegarLoop]: Abstraction has 11053 states and 15932 transitions. [2021-11-13 17:51:15,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 4 states have internal predecessors, (85), 3 states have call successors, (46), 7 states have call predecessors, (46), 1 states have return successors, (42), 3 states have call predecessors, (42), 3 states have call successors, (42) [2021-11-13 17:51:15,067 INFO L276 IsEmpty]: Start isEmpty. Operand 11053 states and 15932 transitions. [2021-11-13 17:51:15,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-13 17:51:15,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:15,106 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:51:15,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:51:15,106 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1761206975, now seen corresponding path program 1 times [2021-11-13 17:51:15,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:15,108 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317231541] [2021-11-13 17:51:15,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:15,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:15,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:15,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:15,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:51:15,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:15,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:15,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 17:51:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:51:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:51:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:15,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 17:51:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:51:15,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:15,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:15,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:15,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 17:51:15,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:15,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:15,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:15,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:51:15,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:15,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:15,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:15,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-13 17:51:15,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:15,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:15,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:15,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:15,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:51:15,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:15,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:15,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:15,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-13 17:51:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:15,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:15,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:15,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:15,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:15,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-13 17:51:15,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-13 17:51:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-13 17:51:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:51:15,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:51:15,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:51:15,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:51:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:15,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:15,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:15,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2457 trivial. 0 not checked. [2021-11-13 17:51:15,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:15,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317231541] [2021-11-13 17:51:15,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317231541] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:15,928 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43288142] [2021-11-13 17:51:15,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:15,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:15,929 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:15,934 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:15,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:51:16,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:16,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 1965 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:51:16,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:17,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1387 proven. 0 refuted. 0 times theorem prover too weak. 1072 trivial. 0 not checked. [2021-11-13 17:51:17,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:51:17,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43288142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:17,697 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:51:17,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-11-13 17:51:17,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504744651] [2021-11-13 17:51:17,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:17,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:51:17,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:17,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:51:17,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:51:17,701 INFO L87 Difference]: Start difference. First operand 11053 states and 15932 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-13 17:51:19,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:19,270 INFO L93 Difference]: Finished difference Result 33139 states and 48145 transitions. [2021-11-13 17:51:19,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:51:19,271 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) Word has length 338 [2021-11-13 17:51:19,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:19,445 INFO L225 Difference]: With dead ends: 33139 [2021-11-13 17:51:19,445 INFO L226 Difference]: Without dead ends: 22096 [2021-11-13 17:51:19,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:51:19,533 INFO L933 BasicCegarLoop]: 1843 mSDtfsCounter, 988 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 229.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 988 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.50ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 269.01ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:19,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [988 Valid, 2848 Invalid, 57 Unknown, 0 Unchecked, 12.50ms Time], IncrementalHoareTripleChecker [16 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 269.01ms Time] [2021-11-13 17:51:19,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22096 states. [2021-11-13 17:51:21,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22096 to 22093. [2021-11-13 17:51:21,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22093 states, 14207 states have (on average 1.291053705919617) internal successors, (18342), 14493 states have internal predecessors, (18342), 6669 states have call successors, (6669), 1217 states have call predecessors, (6669), 1216 states have return successors, (6762), 6568 states have call predecessors, (6762), 6668 states have call successors, (6762) [2021-11-13 17:51:21,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22093 states to 22093 states and 31773 transitions. [2021-11-13 17:51:21,304 INFO L78 Accepts]: Start accepts. Automaton has 22093 states and 31773 transitions. Word has length 338 [2021-11-13 17:51:21,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:21,307 INFO L470 AbstractCegarLoop]: Abstraction has 22093 states and 31773 transitions. [2021-11-13 17:51:21,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 3 states have call successors, (58), 3 states have call predecessors, (58), 3 states have return successors, (55), 3 states have call predecessors, (55), 3 states have call successors, (55) [2021-11-13 17:51:21,307 INFO L276 IsEmpty]: Start isEmpty. Operand 22093 states and 31773 transitions. [2021-11-13 17:51:21,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 339 [2021-11-13 17:51:21,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:21,346 INFO L514 BasicCegarLoop]: trace histogram [40, 40, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:51:21,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-13 17:51:21,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:21,568 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:21,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:21,568 INFO L85 PathProgramCache]: Analyzing trace with hash -828578683, now seen corresponding path program 1 times [2021-11-13 17:51:21,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:21,568 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742243157] [2021-11-13 17:51:21,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:21,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:21,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:21,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:21,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:21,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:51:21,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:21,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:21,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 17:51:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:51:21,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:51:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:21,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 17:51:21,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:51:21,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:21,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:21,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:21,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:21,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 17:51:21,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:21,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:21,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:22,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:22,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:22,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:51:22,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:22,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:22,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-13 17:51:22,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:22,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:22,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:22,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:22,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:22,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:22,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:51:22,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:22,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-11-13 17:51:22,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:22,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:22,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:22,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:22,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 284 [2021-11-13 17:51:22,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 289 [2021-11-13 17:51:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2021-11-13 17:51:22,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:51:22,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:51:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:51:22,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:51:22,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:22,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:22,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2457 trivial. 0 not checked. [2021-11-13 17:51:22,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:22,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742243157] [2021-11-13 17:51:22,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742243157] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:22,394 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1622871442] [2021-11-13 17:51:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:22,394 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:22,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:22,395 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:22,412 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 17:51:22,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:22,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1965 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:51:22,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:23,811 INFO L134 CoverageAnalysis]: Checked inductivity of 2459 backedges. 1154 proven. 0 refuted. 0 times theorem prover too weak. 1305 trivial. 0 not checked. [2021-11-13 17:51:23,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:51:23,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1622871442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:23,812 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:51:23,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2021-11-13 17:51:23,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577611551] [2021-11-13 17:51:23,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:23,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 17:51:23,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:23,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:51:23,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:51:23,815 INFO L87 Difference]: Start difference. First operand 22093 states and 31773 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-13 17:51:25,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:25,623 INFO L93 Difference]: Finished difference Result 52849 states and 75972 transitions. [2021-11-13 17:51:25,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:51:25,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) Word has length 338 [2021-11-13 17:51:25,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:25,869 INFO L225 Difference]: With dead ends: 52849 [2021-11-13 17:51:25,870 INFO L226 Difference]: Without dead ends: 30766 [2021-11-13 17:51:25,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 473 GetRequests, 462 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-11-13 17:51:25,996 INFO L933 BasicCegarLoop]: 1242 mSDtfsCounter, 928 mSDsluCounter, 993 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 58.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.71ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.20ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:25,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 2235 Invalid, 51 Unknown, 0 Unchecked, 7.71ms Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 91.20ms Time] [2021-11-13 17:51:26,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30766 states. [2021-11-13 17:51:28,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30766 to 30763. [2021-11-13 17:51:28,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30763 states, 19851 states have (on average 1.2849730492166642) internal successors, (25508), 20205 states have internal predecessors, (25508), 9132 states have call successors, (9132), 1780 states have call predecessors, (9132), 1779 states have return successors, (9371), 9011 states have call predecessors, (9371), 9131 states have call successors, (9371) [2021-11-13 17:51:28,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30763 states to 30763 states and 44011 transitions. [2021-11-13 17:51:28,752 INFO L78 Accepts]: Start accepts. Automaton has 30763 states and 44011 transitions. Word has length 338 [2021-11-13 17:51:28,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:28,762 INFO L470 AbstractCegarLoop]: Abstraction has 30763 states and 44011 transitions. [2021-11-13 17:51:28,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 3 states have call successors, (53), 3 states have call predecessors, (53), 2 states have return successors, (50), 2 states have call predecessors, (50), 2 states have call successors, (50) [2021-11-13 17:51:28,763 INFO L276 IsEmpty]: Start isEmpty. Operand 30763 states and 44011 transitions. [2021-11-13 17:51:28,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2021-11-13 17:51:28,796 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:28,797 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:51:28,844 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:29,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-13 17:51:29,011 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:29,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:29,012 INFO L85 PathProgramCache]: Analyzing trace with hash 834957377, now seen corresponding path program 1 times [2021-11-13 17:51:29,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:29,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546170615] [2021-11-13 17:51:29,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:29,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:29,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:51:29,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:29,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:29,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-11-13 17:51:29,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:51:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-11-13 17:51:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-11-13 17:51:29,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:51:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:29,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:29,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:29,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-11-13 17:51:29,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:29,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:29,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:29,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:29,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-11-13 17:51:29,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:29,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:29,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:29,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-11-13 17:51:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:29,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-11-13 17:51:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:29,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:29,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-11-13 17:51:29,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-11-13 17:51:29,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2021-11-13 17:51:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:51:29,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:51:29,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:29,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:51:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:30,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:51:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:30,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:30,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:30,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:30,024 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1701 trivial. 0 not checked. [2021-11-13 17:51:30,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:30,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546170615] [2021-11-13 17:51:30,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546170615] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:30,025 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720785290] [2021-11-13 17:51:30,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:30,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:30,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:30,027 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:30,051 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 17:51:30,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:30,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:51:30,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:31,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1703 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2021-11-13 17:51:31,469 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:51:31,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720785290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:31,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:51:31,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [12] total 17 [2021-11-13 17:51:31,471 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019251417] [2021-11-13 17:51:31,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:31,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:31,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:31,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:31,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-11-13 17:51:31,473 INFO L87 Difference]: Start difference. First operand 30763 states and 44011 transitions. Second operand has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:51:33,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:33,780 INFO L93 Difference]: Finished difference Result 77267 states and 110471 transitions. [2021-11-13 17:51:33,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:51:33,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 304 [2021-11-13 17:51:33,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:34,314 INFO L225 Difference]: With dead ends: 77267 [2021-11-13 17:51:34,314 INFO L226 Difference]: Without dead ends: 46514 [2021-11-13 17:51:34,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:51:34,470 INFO L933 BasicCegarLoop]: 1445 mSDtfsCounter, 1052 mSDsluCounter, 6795 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 62.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 8240 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.35ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.44ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:34,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 8240 Invalid, 76 Unknown, 0 Unchecked, 18.35ms Time], IncrementalHoareTripleChecker [3 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 97.44ms Time] [2021-11-13 17:51:34,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46514 states. [2021-11-13 17:51:37,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46514 to 46157. [2021-11-13 17:51:37,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46157 states, 29833 states have (on average 1.2860255421848288) internal successors, (38366), 30417 states have internal predecessors, (38366), 13613 states have call successors, (13613), 2659 states have call predecessors, (13613), 2710 states have return successors, (14072), 13428 states have call predecessors, (14072), 13612 states have call successors, (14072) [2021-11-13 17:51:38,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46157 states to 46157 states and 66051 transitions. [2021-11-13 17:51:38,198 INFO L78 Accepts]: Start accepts. Automaton has 46157 states and 66051 transitions. Word has length 304 [2021-11-13 17:51:38,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:38,206 INFO L470 AbstractCegarLoop]: Abstraction has 46157 states and 66051 transitions. [2021-11-13 17:51:38,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.571428571428571) internal successors, (88), 5 states have internal predecessors, (88), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:51:38,207 INFO L276 IsEmpty]: Start isEmpty. Operand 46157 states and 66051 transitions. [2021-11-13 17:51:38,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2021-11-13 17:51:38,265 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:38,266 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:51:38,320 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:38,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-13 17:51:38,495 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:38,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:38,496 INFO L85 PathProgramCache]: Analyzing trace with hash 753789413, now seen corresponding path program 1 times [2021-11-13 17:51:38,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:38,497 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525330928] [2021-11-13 17:51:38,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:38,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:38,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:38,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:38,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:51:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:38,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:38,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-13 17:51:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-11-13 17:51:38,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-11-13 17:51:38,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:38,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 17:51:38,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2021-11-13 17:51:38,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:38,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:38,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:38,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:38,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:51:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:38,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:38,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:38,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-11-13 17:51:39,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:39,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-11-13 17:51:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:39,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:39,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:39,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:39,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:39,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:39,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:39,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-11-13 17:51:39,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:39,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:39,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:39,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2021-11-13 17:51:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-11-13 17:51:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-11-13 17:51:39,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:51:39,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:51:39,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:51:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:51:39,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:39,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2021-11-13 17:51:39,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:39,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525330928] [2021-11-13 17:51:39,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525330928] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:39,284 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857700007] [2021-11-13 17:51:39,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:39,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:39,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:39,287 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:39,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 17:51:39,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:39,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:51:39,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:40,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2021-11-13 17:51:40,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:51:40,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857700007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:40,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:51:40,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-13 17:51:40,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944841062] [2021-11-13 17:51:40,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:40,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:40,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:40,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:40,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:51:40,544 INFO L87 Difference]: Start difference. First operand 46157 states and 66051 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:51:43,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:43,442 INFO L93 Difference]: Finished difference Result 108130 states and 154585 transitions. [2021-11-13 17:51:43,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:51:43,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 305 [2021-11-13 17:51:43,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:44,066 INFO L225 Difference]: With dead ends: 108130 [2021-11-13 17:51:44,066 INFO L226 Difference]: Without dead ends: 61983 [2021-11-13 17:51:44,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 409 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-11-13 17:51:44,348 INFO L933 BasicCegarLoop]: 1467 mSDtfsCounter, 1052 mSDsluCounter, 6871 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 60.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 8338 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.10ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 71.68ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:44,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 8338 Invalid, 77 Unknown, 0 Unchecked, 17.10ms Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 71.68ms Time] [2021-11-13 17:51:44,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61983 states. [2021-11-13 17:51:47,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61983 to 61533. [2021-11-13 17:51:47,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61533 states, 39799 states have (on average 1.286665494107892) internal successors, (51208), 40623 states have internal predecessors, (51208), 18094 states have call successors, (18094), 3538 states have call predecessors, (18094), 3639 states have return successors, (18737), 17833 states have call predecessors, (18737), 18093 states have call successors, (18737) [2021-11-13 17:51:48,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61533 states to 61533 states and 88039 transitions. [2021-11-13 17:51:48,226 INFO L78 Accepts]: Start accepts. Automaton has 61533 states and 88039 transitions. Word has length 305 [2021-11-13 17:51:48,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:51:48,227 INFO L470 AbstractCegarLoop]: Abstraction has 61533 states and 88039 transitions. [2021-11-13 17:51:48,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:51:48,227 INFO L276 IsEmpty]: Start isEmpty. Operand 61533 states and 88039 transitions. [2021-11-13 17:51:48,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2021-11-13 17:51:48,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:51:48,318 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:51:48,364 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 17:51:48,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:48,531 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:51:48,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:51:48,532 INFO L85 PathProgramCache]: Analyzing trace with hash -2002009830, now seen corresponding path program 1 times [2021-11-13 17:51:48,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:51:48,532 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586264096] [2021-11-13 17:51:48,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:48,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:51:48,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:51:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:48,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:48,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:51:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:48,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-11-13 17:51:49,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-11-13 17:51:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-11-13 17:51:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:49,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-11-13 17:51:49,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-11-13 17:51:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:49,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:49,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:49,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-11-13 17:51:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:49,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:49,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:49,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:49,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:49,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-11-13 17:51:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:49,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:49,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-11-13 17:51:49,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:51:49,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:51:49,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:51:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:51:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:49,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-11-13 17:51:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:51:49,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:51:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:51:49,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:51:49,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:51:49,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-11-13 17:51:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2021-11-13 17:51:49,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-11-13 17:51:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:51:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:51:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:51:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:51:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:51:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:51:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:49,512 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2021-11-13 17:51:49,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:51:49,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586264096] [2021-11-13 17:51:49,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1586264096] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:51:49,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672253537] [2021-11-13 17:51:49,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:51:49,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:51:49,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:51:49,519 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:51:49,534 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 17:51:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:51:50,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:51:50,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:51:50,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2021-11-13 17:51:50,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:51:50,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672253537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:51:50,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:51:50,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-13 17:51:50,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088425433] [2021-11-13 17:51:50,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:51:50,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:51:50,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:51:50,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:51:50,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:51:50,661 INFO L87 Difference]: Start difference. First operand 61533 states and 88039 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:51:54,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:51:54,454 INFO L93 Difference]: Finished difference Result 138879 states and 198551 transitions. [2021-11-13 17:51:54,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:51:54,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 306 [2021-11-13 17:51:54,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:51:55,222 INFO L225 Difference]: With dead ends: 138879 [2021-11-13 17:51:55,222 INFO L226 Difference]: Without dead ends: 77356 [2021-11-13 17:51:55,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 410 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-11-13 17:51:55,896 INFO L933 BasicCegarLoop]: 1482 mSDtfsCounter, 1052 mSDsluCounter, 6931 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 53.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 8413 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.96ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 63.65ms IncrementalHoareTripleChecker+Time [2021-11-13 17:51:55,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 8413 Invalid, 77 Unknown, 0 Unchecked, 14.96ms Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 63.65ms Time] [2021-11-13 17:51:55,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77356 states. [2021-11-13 17:51:59,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77356 to 61563. [2021-11-13 17:51:59,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61563 states, 39823 states have (on average 1.286492730331718) internal successors, (51232), 40641 states have internal predecessors, (51232), 18094 states have call successors, (18094), 3538 states have call predecessors, (18094), 3645 states have return successors, (18746), 17845 states have call predecessors, (18746), 18093 states have call successors, (18746) [2021-11-13 17:52:00,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61563 states to 61563 states and 88072 transitions. [2021-11-13 17:52:00,216 INFO L78 Accepts]: Start accepts. Automaton has 61563 states and 88072 transitions. Word has length 306 [2021-11-13 17:52:00,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:00,217 INFO L470 AbstractCegarLoop]: Abstraction has 61563 states and 88072 transitions. [2021-11-13 17:52:00,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:52:00,218 INFO L276 IsEmpty]: Start isEmpty. Operand 61563 states and 88072 transitions. [2021-11-13 17:52:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2021-11-13 17:52:00,282 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:00,283 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:52:00,334 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:00,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 17:52:00,503 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:00,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:00,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1772032802, now seen corresponding path program 1 times [2021-11-13 17:52:00,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:00,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234066162] [2021-11-13 17:52:00,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:00,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:52:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:00,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:52:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:00,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-11-13 17:52:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-11-13 17:52:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-11-13 17:52:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-11-13 17:52:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 17:52:00,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:00,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:00,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:52:00,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:52:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:52:00,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:52:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:52:00,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-11-13 17:52:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:00,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:52:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:00,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:52:00,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:52:01,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:52:01,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:52:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-11-13 17:52:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:52:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:52:01,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:52:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:52:01,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-11-13 17:52:01,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:01,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:52:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:52:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:52:01,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:52:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:52:01,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-11-13 17:52:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:52:01,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:52:01,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:52:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:52:01,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-11-13 17:52:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-11-13 17:52:01,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-11-13 17:52:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:52:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:52:01,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:52:01,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:52:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:52:01,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:52:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:01,686 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2021-11-13 17:52:01,686 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:01,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234066162] [2021-11-13 17:52:01,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234066162] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:52:01,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [736996809] [2021-11-13 17:52:01,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:01,687 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:52:01,688 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:52:01,689 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:52:01,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 17:52:02,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:02,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 1866 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-13 17:52:02,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:02,917 INFO L134 CoverageAnalysis]: Checked inductivity of 1702 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1696 trivial. 0 not checked. [2021-11-13 17:52:02,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-13 17:52:02,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [736996809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:52:02,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-13 17:52:02,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 18 [2021-11-13 17:52:02,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189116234] [2021-11-13 17:52:02,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:52:02,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:52:02,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:02,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:52:02,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-11-13 17:52:02,921 INFO L87 Difference]: Start difference. First operand 61563 states and 88072 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:52:06,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:52:06,763 INFO L93 Difference]: Finished difference Result 138933 states and 198608 transitions. [2021-11-13 17:52:06,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 17:52:06,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) Word has length 307 [2021-11-13 17:52:06,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:52:07,290 INFO L225 Difference]: With dead ends: 138933 [2021-11-13 17:52:07,290 INFO L226 Difference]: Without dead ends: 77380 [2021-11-13 17:52:07,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 434 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=515, Unknown=0, NotChecked=0, Total=600 [2021-11-13 17:52:07,636 INFO L933 BasicCegarLoop]: 1482 mSDtfsCounter, 1052 mSDsluCounter, 6931 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.08ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1056 SdHoareTripleChecker+Valid, 8413 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.48ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.40ms IncrementalHoareTripleChecker+Time [2021-11-13 17:52:07,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1056 Valid, 8413 Invalid, 77 Unknown, 0 Unchecked, 16.48ms Time], IncrementalHoareTripleChecker [2 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 98.40ms Time] [2021-11-13 17:52:07,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77380 states. [2021-11-13 17:52:11,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77380 to 61584. [2021-11-13 17:52:11,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61584 states, 39841 states have (on average 1.2863632940940237) internal successors, (51250), 40650 states have internal predecessors, (51250), 18094 states have call successors, (18094), 3538 states have call predecessors, (18094), 3648 states have return successors, (18749), 17857 states have call predecessors, (18749), 18093 states have call successors, (18749) [2021-11-13 17:52:11,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61584 states to 61584 states and 88093 transitions. [2021-11-13 17:52:11,876 INFO L78 Accepts]: Start accepts. Automaton has 61584 states and 88093 transitions. Word has length 307 [2021-11-13 17:52:11,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:52:11,877 INFO L470 AbstractCegarLoop]: Abstraction has 61584 states and 88093 transitions. [2021-11-13 17:52:11,877 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 3 states have call successors, (39), 3 states have call predecessors, (39), 3 states have return successors, (35), 3 states have call predecessors, (35), 2 states have call successors, (35) [2021-11-13 17:52:11,877 INFO L276 IsEmpty]: Start isEmpty. Operand 61584 states and 88093 transitions. [2021-11-13 17:52:11,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-11-13 17:52:11,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:52:11,930 INFO L514 BasicCegarLoop]: trace histogram [33, 33, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2021-11-13 17:52:11,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:52:12,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-13 17:52:12,155 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:52:12,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:52:12,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1969812472, now seen corresponding path program 1 times [2021-11-13 17:52:12,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:52:12,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418182638] [2021-11-13 17:52:12,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:12,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:52:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:52:12,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:12,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:12,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-11-13 17:52:12,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:12,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-13 17:52:12,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2021-11-13 17:52:12,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:52:12,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-11-13 17:52:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:12,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:52:12,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-11-13 17:52:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:12,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:12,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:52:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:52:12,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:52:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:52:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:52:12,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-11-13 17:52:12,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:12,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:52:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:52:12,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:52:12,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:52:12,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:52:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-11-13 17:52:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:12,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:52:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:52:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:52:12,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:52:12,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-11-13 17:52:12,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:12,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-11-13 17:52:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-11-13 17:52:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-13 17:52:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-11-13 17:52:12,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:52:12,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:52:12,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-11-13 17:52:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:52:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-11-13 17:52:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-11-13 17:52:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:52:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-11-13 17:52:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:12,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-11-13 17:52:12,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:13,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 270 [2021-11-13 17:52:13,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:13,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-11-13 17:52:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:13,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:52:13,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-11-13 17:52:13,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:13,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-11-13 17:52:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:13,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:52:13,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:13,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:52:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-11-13 17:52:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 17 proven. 7 refuted. 0 times theorem prover too weak. 1697 trivial. 0 not checked. [2021-11-13 17:52:13,547 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:52:13,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418182638] [2021-11-13 17:52:13,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418182638] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:52:13,548 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823247272] [2021-11-13 17:52:13,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:52:13,549 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:52:13,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:52:13,551 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:52:13,570 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f801c23e-2581-4a33-97e0-46ff300f972b/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 17:52:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:52:14,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1931 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-13 17:52:14,166 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:52:15,041 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 1702 trivial. 0 not checked. [2021-11-13 17:52:15,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:52:16,080 INFO L134 CoverageAnalysis]: Checked inductivity of 1721 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 1703 trivial. 0 not checked. [2021-11-13 17:52:16,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [823247272] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:52:16,082 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:52:16,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10, 10] total 24 [2021-11-13 17:52:16,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35763701] [2021-11-13 17:52:16,082 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:52:16,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-11-13 17:52:16,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:52:16,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-11-13 17:52:16,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2021-11-13 17:52:16,085 INFO L87 Difference]: Start difference. First operand 61584 states and 88093 transitions. Second operand has 24 states, 24 states have (on average 7.416666666666667) internal successors, (178), 15 states have internal predecessors, (178), 5 states have call successors, (80), 9 states have call predecessors, (80), 7 states have return successors, (71), 6 states have call predecessors, (71), 5 states have call successors, (71)