./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.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_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/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_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/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_cb016503-f1a4-4cbe-921e-29664955e751/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 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:31:11,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:31:11,537 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:31:11,595 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:31:11,596 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:31:11,601 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:31:11,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:31:11,607 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:31:11,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:31:11,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:31:11,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:31:11,620 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:31:11,621 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:31:11,624 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:31:11,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:31:11,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:31:11,634 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:31:11,635 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:31:11,638 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:31:11,646 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:31:11,648 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:31:11,650 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:31:11,653 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:31:11,655 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:31:11,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:31:11,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:31:11,665 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:31:11,667 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:31:11,668 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:31:11,669 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:31:11,670 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:31:11,671 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:31:11,673 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:31:11,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:31:11,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:31:11,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:31:11,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:31:11,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:31:11,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:31:11,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:31:11,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:31:11,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-13 17:31:11,729 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:31:11,730 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:31:11,730 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:31:11,731 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:31:11,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 17:31:11,739 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 17:31:11,740 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:31:11,740 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:31:11,741 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:31:11,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:31:11,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:31:11,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:31:11,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 17:31:11,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 17:31:11,744 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 17:31:11,744 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:31:11,744 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:31:11,745 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 17:31:11,745 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:31:11,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:31:11,746 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 17:31:11,746 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:11,746 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:31:11,747 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 17:31:11,747 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 17:31:11,747 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:31:11,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 17:31:11,748 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-13 17:31:11,748 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-13 17:31:11,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 17:31:11,750 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:31:11,751 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_cb016503-f1a4-4cbe-921e-29664955e751/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a0b87150f68c4dfa6a57a3698556eda427efd851a248be648b2e5c8b3a3f4dd [2021-11-13 17:31:12,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:31:12,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:31:12,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:31:12,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:31:12,114 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:31:12,116 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-13 17:31:12,206 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/data/89f1f2d3b/755e20cc56104e37864905c246675a59/FLAG92742a61a [2021-11-13 17:31:13,096 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:31:13,097 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-13 17:31:13,154 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/data/89f1f2d3b/755e20cc56104e37864905c246675a59/FLAG92742a61a [2021-11-13 17:31:13,578 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/data/89f1f2d3b/755e20cc56104e37864905c246675a59 [2021-11-13 17:31:13,580 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:31:13,582 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:31:13,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:13,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:31:13,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:31:13,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:13" (1/1) ... [2021-11-13 17:31:13,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20f98aec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:13, skipping insertion in model container [2021-11-13 17:31:13,590 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:31:13" (1/1) ... [2021-11-13 17:31:13,598 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:31:13,749 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:31:14,581 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_cb016503-f1a4-4cbe-921e-29664955e751/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-11-13 17:31:15,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:15,818 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:31:15,974 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_cb016503-f1a4-4cbe-921e-29664955e751/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i[156940,156953] [2021-11-13 17:31:16,271 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:31:16,384 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:31:16,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16 WrapperNode [2021-11-13 17:31:16,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:31:16,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:16,388 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:31:16,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:31:16,396 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,522 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:31:16,693 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:31:16,693 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:31:16,693 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:31:16,702 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,735 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,735 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:16,997 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:17,043 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:31:17,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:31:17,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:31:17,044 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:31:17,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (1/1) ... [2021-11-13 17:31:17,058 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 17:31:17,071 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:31:17,099 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 17:31:17,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 17:31:17,148 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_complete [2021-11-13 17:31:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_complete [2021-11-13 17:31:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure dout_reset [2021-11-13 17:31:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_reset [2021-11-13 17:31:17,149 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_isocpipes [2021-11-13 17:31:17,149 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_isocpipes [2021-11-13 17:31:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-13 17:31:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-13 17:31:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure __cpu_to_le16p [2021-11-13 17:31:17,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __cpu_to_le16p [2021-11-13 17:31:17,150 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-13 17:31:17,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-13 17:31:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2021-11-13 17:31:17,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2021-11-13 17:31:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure usb_altnum_to_altsetting [2021-11-13 17:31:17,151 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_altnum_to_altsetting [2021-11-13 17:31:17,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-13 17:31:17,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-13 17:31:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_st5481 [2021-11-13 17:31:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_st5481 [2021-11-13 17:31:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2021-11-13 17:31:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2021-11-13 17:31:17,152 INFO L130 BoogieDeclarations]: Found specification of procedure usb_next_ctrl_msg [2021-11-13 17:31:17,152 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_next_ctrl_msg [2021-11-13 17:31:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_usb [2021-11-13 17:31:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_usb [2021-11-13 17:31:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out [2021-11-13 17:31:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out [2021-11-13 17:31:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_device_ctrl_msg [2021-11-13 17:31:17,153 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_device_ctrl_msg [2021-11-13 17:31:17,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-13 17:31:17,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-13 17:31:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure FsmEvent [2021-11-13 17:31:17,154 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmEvent [2021-11-13 17:31:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-13 17:31:17,154 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-13 17:31:17,154 INFO L130 BoogieDeclarations]: Found specification of procedure led_blink [2021-11-13 17:31:17,155 INFO L138 BoogieDeclarations]: Found implementation of procedure led_blink [2021-11-13 17:31:17,155 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_in_mode [2021-11-13 17:31:17,155 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_in_mode [2021-11-13 17:31:17,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2021-11-13 17:31:17,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2021-11-13 17:31:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_start_rcv [2021-11-13 17:31:17,156 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_start_rcv [2021-11-13 17:31:17,156 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-13 17:31:17,157 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-13 17:31:17,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_23 [2021-11-13 17:31:17,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_23 [2021-11-13 17:31:17,157 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_24 [2021-11-13 17:31:17,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_24 [2021-11-13 17:31:17,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_2 [2021-11-13 17:31:17,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_2 [2021-11-13 17:31:17,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_29 [2021-11-13 17:31:17,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_29 [2021-11-13 17:31:17,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_25 [2021-11-13 17:31:17,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_25 [2021-11-13 17:31:17,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:31:17,160 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_27 [2021-11-13 17:31:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_27 [2021-11-13 17:31:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_28 [2021-11-13 17:31:17,161 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_28 [2021-11-13 17:31:17,161 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-11-13 17:31:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-11-13 17:31:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure ph_connect [2021-11-13 17:31:17,162 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_connect [2021-11-13 17:31:17,162 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_mode [2021-11-13 17:31:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_mode [2021-11-13 17:31:17,163 INFO L130 BoogieDeclarations]: Found specification of procedure B_L1L2 [2021-11-13 17:31:17,163 INFO L138 BoogieDeclarations]: Found implementation of procedure B_L1L2 [2021-11-13 17:31:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-13 17:31:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~VOID [2021-11-13 17:31:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_10 [2021-11-13 17:31:17,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_10 [2021-11-13 17:31:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-13 17:31:17,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_11 [2021-11-13 17:31:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_11 [2021-11-13 17:31:17,165 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ifnum_to_if [2021-11-13 17:31:17,165 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ifnum_to_if [2021-11-13 17:31:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_setup_isocpipes [2021-11-13 17:31:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_setup_isocpipes [2021-11-13 17:31:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure isdnhdlc_out_init [2021-11-13 17:31:17,166 INFO L138 BoogieDeclarations]: Found implementation of procedure isdnhdlc_out_init [2021-11-13 17:31:17,166 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-13 17:31:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-13 17:31:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure ph_disconnect [2021-11-13 17:31:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ph_disconnect [2021-11-13 17:31:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-13 17:31:17,167 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f6 [2021-11-13 17:31:17,167 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f6 [2021-11-13 17:31:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-13 17:31:17,168 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f7 [2021-11-13 17:31:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f7 [2021-11-13 17:31:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f8 [2021-11-13 17:31:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f8 [2021-11-13 17:31:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_b_l2l1 [2021-11-13 17:31:17,169 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_b_l2l1 [2021-11-13 17:31:17,169 INFO L130 BoogieDeclarations]: Found specification of procedure l1_go_f3 [2021-11-13 17:31:17,170 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_go_f3 [2021-11-13 17:31:17,170 INFO L130 BoogieDeclarations]: Found specification of procedure dout_short_fifo [2021-11-13 17:31:17,171 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_short_fifo [2021-11-13 17:31:17,171 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_setup_b [2021-11-13 17:31:17,172 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_setup_b [2021-11-13 17:31:17,172 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-11-13 17:31:17,173 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-11-13 17:31:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-11-13 17:31:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-11-13 17:31:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure usb_in_complete [2021-11-13 17:31:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_in_complete [2021-11-13 17:31:17,174 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out_complete [2021-11-13 17:31:17,174 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out_complete [2021-11-13 17:31:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure st5481B_start_xfer [2021-11-13 17:31:17,175 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481B_start_xfer [2021-11-13 17:31:17,175 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_usb_pipe_reset [2021-11-13 17:31:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_usb_pipe_reset [2021-11-13 17:31:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-13 17:31:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-13 17:31:17,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-13 17:31:17,176 INFO L130 BoogieDeclarations]: Found specification of procedure dout_check_busy [2021-11-13 17:31:17,177 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_check_busy [2021-11-13 17:31:17,178 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_b_out [2021-11-13 17:31:17,181 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_b_out [2021-11-13 17:31:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure FsmFree [2021-11-13 17:31:17,181 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmFree [2021-11-13 17:31:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-13 17:31:17,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-13 17:31:17,183 INFO L130 BoogieDeclarations]: Found specification of procedure isdnhdlc_encode [2021-11-13 17:31:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure isdnhdlc_encode [2021-11-13 17:31:17,184 INFO L130 BoogieDeclarations]: Found specification of procedure usb_d_out [2021-11-13 17:31:17,184 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_d_out [2021-11-13 17:31:17,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-13 17:31:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-13 17:31:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-11-13 17:31:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-11-13 17:31:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-13 17:31:17,191 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-13 17:31:17,191 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_den [2021-11-13 17:31:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_den [2021-11-13 17:31:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-11-13 17:31:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-11-13 17:31:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-13 17:31:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-13 17:31:17,192 INFO L130 BoogieDeclarations]: Found specification of procedure dout_stop [2021-11-13 17:31:17,192 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_stop [2021-11-13 17:31:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure dout_underrun [2021-11-13 17:31:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_underrun [2021-11-13 17:31:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-13 17:31:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-11-13 17:31:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-11-13 17:31:17,193 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_in [2021-11-13 17:31:17,193 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_in [2021-11-13 17:31:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-13 17:31:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-13 17:31:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_31 [2021-11-13 17:31:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_31 [2021-11-13 17:31:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_d_exit [2021-11-13 17:31:17,194 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_d_exit [2021-11-13 17:31:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-13 17:31:17,194 INFO L130 BoogieDeclarations]: Found specification of procedure dump_iso_packet___0 [2021-11-13 17:31:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_iso_packet___0 [2021-11-13 17:31:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ctrl_msg [2021-11-13 17:31:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ctrl_msg [2021-11-13 17:31:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-11-13 17:31:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-11-13 17:31:17,195 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_any [2021-11-13 17:31:17,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_any [2021-11-13 17:31:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2021-11-13 17:31:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2021-11-13 17:31:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-13 17:31:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-13 17:31:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-13 17:31:17,196 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_b [2021-11-13 17:31:17,196 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_b [2021-11-13 17:31:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure dump_packet [2021-11-13 17:31:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_packet [2021-11-13 17:31:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_d [2021-11-13 17:31:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_d [2021-11-13 17:31:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 17:31:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-13 17:31:17,197 INFO L130 BoogieDeclarations]: Found specification of procedure l1_activate [2021-11-13 17:31:17,197 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_activate [2021-11-13 17:31:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure FsmNew [2021-11-13 17:31:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmNew [2021-11-13 17:31:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure l1_timer3 [2021-11-13 17:31:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure l1_timer3 [2021-11-13 17:31:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_stop [2021-11-13 17:31:17,198 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_stop [2021-11-13 17:31:17,198 INFO L130 BoogieDeclarations]: Found specification of procedure dout_long_enable_fifo [2021-11-13 17:31:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_long_enable_fifo [2021-11-13 17:31:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure usb_b_out_complete [2021-11-13 17:31:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_b_out_complete [2021-11-13 17:31:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure usb_int_complete [2021-11-13 17:31:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_int_complete [2021-11-13 17:31:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_setup_in [2021-11-13 17:31:17,199 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_setup_in [2021-11-13 17:31:17,199 INFO L130 BoogieDeclarations]: Found specification of procedure D_L1L2 [2021-11-13 17:31:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure D_L1L2 [2021-11-13 17:31:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure dout_complete [2021-11-13 17:31:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_complete [2021-11-13 17:31:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure FsmChangeState [2021-11-13 17:31:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure FsmChangeState [2021-11-13 17:31:17,200 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_ph_command [2021-11-13 17:31:17,200 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_ph_command [2021-11-13 17:31:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure dout_start_xmit [2021-11-13 17:31:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure dout_start_xmit [2021-11-13 17:31:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure st5481_release_d_out [2021-11-13 17:31:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure st5481_release_d_out [2021-11-13 17:31:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2021-11-13 17:31:17,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2021-11-13 17:31:17,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:31:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-11-13 17:31:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-11-13 17:31:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure get_buf_nr [2021-11-13 17:31:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure get_buf_nr [2021-11-13 17:31:17,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:31:17,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:31:18,270 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-13 17:31:23,472 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2021-11-13 17:31:43,777 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:31:43,777 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-13 17:31:43,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:43 BoogieIcfgContainer [2021-11-13 17:31:43,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:31:43,784 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 17:31:43,784 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 17:31:43,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 17:31:43,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 05:31:13" (1/3) ... [2021-11-13 17:31:43,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102b62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:43, skipping insertion in model container [2021-11-13 17:31:43,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:31:16" (2/3) ... [2021-11-13 17:31:43,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3102b62a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 05:31:43, skipping insertion in model container [2021-11-13 17:31:43,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:31:43" (3/3) ... [2021-11-13 17:31:43,797 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--isdn--hisax--hisax_st5481.ko-entry_point.cil.out.i [2021-11-13 17:31:43,802 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 17:31:43,803 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-13 17:31:43,878 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 17:31:43,893 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 17:31:43,896 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-13 17:31:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand has 1266 states, 884 states have (on average 1.3608597285067874) internal successors, (1203), 950 states have internal predecessors, (1203), 283 states have call successors, (283), 100 states have call predecessors, (283), 98 states have return successors, (278), 254 states have call predecessors, (278), 278 states have call successors, (278) [2021-11-13 17:31:43,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 17:31:43,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:43,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:43,964 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:43,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:43,969 INFO L85 PathProgramCache]: Analyzing trace with hash 517411944, now seen corresponding path program 1 times [2021-11-13 17:31:43,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:43,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1337706588] [2021-11-13 17:31:43,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:43,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:44,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:44,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:44,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:44,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-11-13 17:31:44,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:44,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:31:44,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:31:44,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:45,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-13 17:31:45,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:45,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1337706588] [2021-11-13 17:31:45,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1337706588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:45,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:45,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:31:45,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388317152] [2021-11-13 17:31:45,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:45,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:31:45,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:45,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:31:45,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:31:45,042 INFO L87 Difference]: Start difference. First operand has 1266 states, 884 states have (on average 1.3608597285067874) internal successors, (1203), 950 states have internal predecessors, (1203), 283 states have call successors, (283), 100 states have call predecessors, (283), 98 states have return successors, (278), 254 states have call predecessors, (278), 278 states have call successors, (278) Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:31:47,194 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:31:49,339 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:31:55,468 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 17:31:57,649 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:31:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:31:58,403 INFO L93 Difference]: Finished difference Result 4074 states and 6055 transitions. [2021-11-13 17:31:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:31:58,408 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2021-11-13 17:31:58,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:31:58,479 INFO L225 Difference]: With dead ends: 4074 [2021-11-13 17:31:58,479 INFO L226 Difference]: Without dead ends: 2789 [2021-11-13 17:31:58,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:31:58,508 INFO L933 BasicCegarLoop]: 1834 mSDtfsCounter, 2666 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 985 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11785.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2828 SdHoareTripleChecker+Valid, 3947 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 74.86ms SdHoareTripleChecker+Time, 985 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12844.74ms IncrementalHoareTripleChecker+Time [2021-11-13 17:31:58,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2828 Valid, 3947 Invalid, 2246 Unknown, 0 Unchecked, 74.86ms Time], IncrementalHoareTripleChecker [985 Valid, 1258 Invalid, 3 Unknown, 0 Unchecked, 12844.74ms Time] [2021-11-13 17:31:58,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2789 states. [2021-11-13 17:31:58,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2789 to 2451. [2021-11-13 17:31:58,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2451 states, 1715 states have (on average 1.3521865889212827) internal successors, (2319), 1825 states have internal predecessors, (2319), 542 states have call successors, (542), 194 states have call predecessors, (542), 193 states have return successors, (537), 489 states have call predecessors, (537), 537 states have call successors, (537) [2021-11-13 17:31:58,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2451 states to 2451 states and 3398 transitions. [2021-11-13 17:31:58,833 INFO L78 Accepts]: Start accepts. Automaton has 2451 states and 3398 transitions. Word has length 33 [2021-11-13 17:31:58,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:31:58,834 INFO L470 AbstractCegarLoop]: Abstraction has 2451 states and 3398 transitions. [2021-11-13 17:31:58,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.5) internal successors, (22), 3 states have internal predecessors, (22), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-11-13 17:31:58,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2451 states and 3398 transitions. [2021-11-13 17:31:58,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 17:31:58,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:31:58,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:31:58,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 17:31:58,845 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:31:58,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:31:58,846 INFO L85 PathProgramCache]: Analyzing trace with hash -637694461, now seen corresponding path program 1 times [2021-11-13 17:31:58,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:31:58,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807854946] [2021-11-13 17:31:58,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:31:58,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:31:59,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:31:59,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:31:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:31:59,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:31:59,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:31:59,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807854946] [2021-11-13 17:31:59,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807854946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:31:59,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:31:59,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:31:59,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606447379] [2021-11-13 17:31:59,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:31:59,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:31:59,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:31:59,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:31:59,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:31:59,465 INFO L87 Difference]: Start difference. First operand 2451 states and 3398 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:01,602 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:03,765 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:12,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:14,331 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:14,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:14,845 INFO L93 Difference]: Finished difference Result 5444 states and 7661 transitions. [2021-11-13 17:32:14,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 17:32:14,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-11-13 17:32:14,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:14,873 INFO L225 Difference]: With dead ends: 5444 [2021-11-13 17:32:14,873 INFO L226 Difference]: Without dead ends: 3005 [2021-11-13 17:32:14,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-13 17:32:14,888 INFO L933 BasicCegarLoop]: 1840 mSDtfsCounter, 1044 mSDsluCounter, 8804 mSDsCounter, 0 mSdLazyCounter, 2198 mSolverCounterSat, 495 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13889.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1095 SdHoareTripleChecker+Valid, 10644 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 69.31ms SdHoareTripleChecker+Time, 495 IncrementalHoareTripleChecker+Valid, 2198 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14862.92ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:14,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1095 Valid, 10644 Invalid, 2697 Unknown, 0 Unchecked, 69.31ms Time], IncrementalHoareTripleChecker [495 Valid, 2198 Invalid, 4 Unknown, 0 Unchecked, 14862.92ms Time] [2021-11-13 17:32:14,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3005 states. [2021-11-13 17:32:15,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3005 to 2453. [2021-11-13 17:32:15,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2453 states, 1717 states have (on average 1.351193942923704) internal successors, (2320), 1827 states have internal predecessors, (2320), 542 states have call successors, (542), 194 states have call predecessors, (542), 193 states have return successors, (537), 489 states have call predecessors, (537), 537 states have call successors, (537) [2021-11-13 17:32:15,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2453 states to 2453 states and 3399 transitions. [2021-11-13 17:32:15,024 INFO L78 Accepts]: Start accepts. Automaton has 2453 states and 3399 transitions. Word has length 33 [2021-11-13 17:32:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:15,025 INFO L470 AbstractCegarLoop]: Abstraction has 2453 states and 3399 transitions. [2021-11-13 17:32:15,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:15,027 INFO L276 IsEmpty]: Start isEmpty. Operand 2453 states and 3399 transitions. [2021-11-13 17:32:15,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-13 17:32:15,030 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:15,030 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:15,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 17:32:15,030 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:15,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:15,031 INFO L85 PathProgramCache]: Analyzing trace with hash -580436159, now seen corresponding path program 1 times [2021-11-13 17:32:15,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:15,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332552218] [2021-11-13 17:32:15,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:15,034 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:15,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:15,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:15,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:15,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:32:15,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:15,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:15,910 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:15,910 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332552218] [2021-11-13 17:32:15,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332552218] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:15,911 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:15,911 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:32:15,911 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900899534] [2021-11-13 17:32:15,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:15,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:32:15,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:15,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:32:15,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:32:15,914 INFO L87 Difference]: Start difference. First operand 2453 states and 3399 transitions. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:18,028 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:21,310 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 17:32:25,412 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:27,220 INFO L93 Difference]: Finished difference Result 8008 states and 12164 transitions. [2021-11-13 17:32:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 17:32:27,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 33 [2021-11-13 17:32:27,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:27,273 INFO L225 Difference]: With dead ends: 8008 [2021-11-13 17:32:27,273 INFO L226 Difference]: Without dead ends: 5567 [2021-11-13 17:32:27,294 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:27,299 INFO L933 BasicCegarLoop]: 2021 mSDtfsCounter, 2798 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 1025 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10196.22ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 4198 SdHoareTripleChecker+Invalid, 2331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.51ms SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10860.99ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:27,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2917 Valid, 4198 Invalid, 2331 Unknown, 0 Unchecked, 35.51ms Time], IncrementalHoareTripleChecker [1025 Valid, 1304 Invalid, 2 Unknown, 0 Unchecked, 10860.99ms Time] [2021-11-13 17:32:27,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5567 states. [2021-11-13 17:32:27,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5567 to 5205. [2021-11-13 17:32:27,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5205 states, 3616 states have (on average 1.3393252212389382) internal successors, (4843), 3856 states have internal predecessors, (4843), 1115 states have call successors, (1115), 386 states have call predecessors, (1115), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-11-13 17:32:27,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5205 states to 5205 states and 7602 transitions. [2021-11-13 17:32:27,622 INFO L78 Accepts]: Start accepts. Automaton has 5205 states and 7602 transitions. Word has length 33 [2021-11-13 17:32:27,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:27,622 INFO L470 AbstractCegarLoop]: Abstraction has 5205 states and 7602 transitions. [2021-11-13 17:32:27,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:27,623 INFO L276 IsEmpty]: Start isEmpty. Operand 5205 states and 7602 transitions. [2021-11-13 17:32:27,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-13 17:32:27,629 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:27,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:27,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 17:32:27,629 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:27,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:27,630 INFO L85 PathProgramCache]: Analyzing trace with hash -814198283, now seen corresponding path program 1 times [2021-11-13 17:32:27,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:27,630 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877698012] [2021-11-13 17:32:27,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:27,631 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:28,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:28,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:32:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:28,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:28,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:28,258 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877698012] [2021-11-13 17:32:28,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877698012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:28,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:28,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:32:28,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125526011] [2021-11-13 17:32:28,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:28,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:32:28,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:28,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:32:28,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:32:28,260 INFO L87 Difference]: Start difference. First operand 5205 states and 7602 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:30,379 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:35,161 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:35,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:35,497 INFO L93 Difference]: Finished difference Result 5559 states and 8181 transitions. [2021-11-13 17:32:35,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:32:35,498 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 34 [2021-11-13 17:32:35,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:35,545 INFO L225 Difference]: With dead ends: 5559 [2021-11-13 17:32:35,546 INFO L226 Difference]: Without dead ends: 5556 [2021-11-13 17:32:35,550 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:35,551 INFO L933 BasicCegarLoop]: 1595 mSDtfsCounter, 2115 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 639 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6621.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2224 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 14.66ms SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6937.17ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:35,551 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2224 Valid, 2164 Invalid, 1278 Unknown, 0 Unchecked, 14.66ms Time], IncrementalHoareTripleChecker [639 Valid, 637 Invalid, 2 Unknown, 0 Unchecked, 6937.17ms Time] [2021-11-13 17:32:35,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5556 states. [2021-11-13 17:32:35,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5556 to 5204. [2021-11-13 17:32:35,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 3616 states have (on average 1.3390486725663717) internal successors, (4842), 3855 states have internal predecessors, (4842), 1114 states have call successors, (1114), 386 states have call predecessors, (1114), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-11-13 17:32:36,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 7600 transitions. [2021-11-13 17:32:36,006 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 7600 transitions. Word has length 34 [2021-11-13 17:32:36,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:36,006 INFO L470 AbstractCegarLoop]: Abstraction has 5204 states and 7600 transitions. [2021-11-13 17:32:36,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:36,008 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 7600 transitions. [2021-11-13 17:32:36,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-11-13 17:32:36,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:36,009 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:36,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 17:32:36,009 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:36,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:36,010 INFO L85 PathProgramCache]: Analyzing trace with hash 529115332, now seen corresponding path program 1 times [2021-11-13 17:32:36,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:36,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997071896] [2021-11-13 17:32:36,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:36,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:36,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:36,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:36,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:32:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:36,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:36,427 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997071896] [2021-11-13 17:32:36,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997071896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:36,427 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:36,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:32:36,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533436311] [2021-11-13 17:32:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:36,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:32:36,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:32:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:32:36,429 INFO L87 Difference]: Start difference. First operand 5204 states and 7600 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:38,543 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:42,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:43,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:43,299 INFO L93 Difference]: Finished difference Result 5558 states and 8179 transitions. [2021-11-13 17:32:43,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:32:43,300 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 35 [2021-11-13 17:32:43,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:43,343 INFO L225 Difference]: With dead ends: 5558 [2021-11-13 17:32:43,344 INFO L226 Difference]: Without dead ends: 5555 [2021-11-13 17:32:43,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:43,348 INFO L933 BasicCegarLoop]: 1598 mSDtfsCounter, 2109 mSDsluCounter, 571 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 642 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6282.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2215 SdHoareTripleChecker+Valid, 2169 SdHoareTripleChecker+Invalid, 1279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.70ms SdHoareTripleChecker+Time, 642 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6590.80ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:43,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2215 Valid, 2169 Invalid, 1279 Unknown, 0 Unchecked, 12.70ms Time], IncrementalHoareTripleChecker [642 Valid, 635 Invalid, 2 Unknown, 0 Unchecked, 6590.80ms Time] [2021-11-13 17:32:43,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5555 states. [2021-11-13 17:32:43,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5555 to 5203. [2021-11-13 17:32:43,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 3616 states have (on average 1.3387721238938053) internal successors, (4841), 3854 states have internal predecessors, (4841), 1113 states have call successors, (1113), 386 states have call predecessors, (1113), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-11-13 17:32:43,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 7598 transitions. [2021-11-13 17:32:43,736 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 7598 transitions. Word has length 35 [2021-11-13 17:32:43,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:43,737 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 7598 transitions. [2021-11-13 17:32:43,737 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:43,737 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 7598 transitions. [2021-11-13 17:32:43,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-13 17:32:43,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:43,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:43,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 17:32:43,739 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:43,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash -777830696, now seen corresponding path program 1 times [2021-11-13 17:32:43,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:43,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018796354] [2021-11-13 17:32:43,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:43,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:43,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:32:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:44,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:44,061 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:44,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018796354] [2021-11-13 17:32:44,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018796354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:44,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:44,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:32:44,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2732564] [2021-11-13 17:32:44,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:44,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:32:44,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:44,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:32:44,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:32:44,065 INFO L87 Difference]: Start difference. First operand 5203 states and 7598 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:46,183 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:50,572 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:50,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:50,938 INFO L93 Difference]: Finished difference Result 5557 states and 8177 transitions. [2021-11-13 17:32:50,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:32:50,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 36 [2021-11-13 17:32:50,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:50,976 INFO L225 Difference]: With dead ends: 5557 [2021-11-13 17:32:50,976 INFO L226 Difference]: Without dead ends: 5554 [2021-11-13 17:32:50,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:50,981 INFO L933 BasicCegarLoop]: 1595 mSDtfsCounter, 2105 mSDsluCounter, 568 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 640 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6304.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2213 SdHoareTripleChecker+Valid, 2163 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.72ms SdHoareTripleChecker+Time, 640 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6601.40ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:50,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2213 Valid, 2163 Invalid, 1278 Unknown, 0 Unchecked, 11.72ms Time], IncrementalHoareTripleChecker [640 Valid, 636 Invalid, 2 Unknown, 0 Unchecked, 6601.40ms Time] [2021-11-13 17:32:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5554 states. [2021-11-13 17:32:51,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5554 to 5202. [2021-11-13 17:32:51,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5202 states, 3616 states have (on average 1.3384955752212389) internal successors, (4840), 3853 states have internal predecessors, (4840), 1112 states have call successors, (1112), 386 states have call predecessors, (1112), 473 states have return successors, (1644), 1070 states have call predecessors, (1644), 1110 states have call successors, (1644) [2021-11-13 17:32:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5202 states to 5202 states and 7596 transitions. [2021-11-13 17:32:51,368 INFO L78 Accepts]: Start accepts. Automaton has 5202 states and 7596 transitions. Word has length 36 [2021-11-13 17:32:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:51,369 INFO L470 AbstractCegarLoop]: Abstraction has 5202 states and 7596 transitions. [2021-11-13 17:32:51,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 5202 states and 7596 transitions. [2021-11-13 17:32:51,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-11-13 17:32:51,370 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:51,370 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:32:51,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 17:32:51,371 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:51,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:51,371 INFO L85 PathProgramCache]: Analyzing trace with hash 1656520263, now seen corresponding path program 1 times [2021-11-13 17:32:51,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:51,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164632325] [2021-11-13 17:32:51,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:51,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:51,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:51,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:32:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:51,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:32:51,689 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:32:51,689 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164632325] [2021-11-13 17:32:51,689 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164632325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:32:51,689 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:32:51,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:32:51,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536118957] [2021-11-13 17:32:51,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:32:51,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 17:32:51,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:32:51,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:32:51,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:32:51,691 INFO L87 Difference]: Start difference. First operand 5202 states and 7596 transitions. Second operand has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:53,811 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:58,685 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:32:59,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:32:59,021 INFO L93 Difference]: Finished difference Result 5556 states and 8175 transitions. [2021-11-13 17:32:59,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:32:59,022 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2021-11-13 17:32:59,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:32:59,056 INFO L225 Difference]: With dead ends: 5556 [2021-11-13 17:32:59,056 INFO L226 Difference]: Without dead ends: 5527 [2021-11-13 17:32:59,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-13 17:32:59,064 INFO L933 BasicCegarLoop]: 1589 mSDtfsCounter, 2104 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 636 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6708.34ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2216 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 1273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 11.83ms SdHoareTripleChecker+Time, 636 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7016.21ms IncrementalHoareTripleChecker+Time [2021-11-13 17:32:59,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2216 Valid, 2153 Invalid, 1273 Unknown, 0 Unchecked, 11.83ms Time], IncrementalHoareTripleChecker [636 Valid, 635 Invalid, 2 Unknown, 0 Unchecked, 7016.21ms Time] [2021-11-13 17:32:59,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5527 states. [2021-11-13 17:32:59,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5527 to 5175. [2021-11-13 17:32:59,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 3599 states have (on average 1.3384273409280356) internal successors, (4817), 3834 states have internal predecessors, (4817), 1105 states have call successors, (1105), 383 states have call predecessors, (1105), 470 states have return successors, (1638), 1064 states have call predecessors, (1638), 1104 states have call successors, (1638) [2021-11-13 17:32:59,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 7560 transitions. [2021-11-13 17:32:59,467 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 7560 transitions. Word has length 37 [2021-11-13 17:32:59,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:32:59,469 INFO L470 AbstractCegarLoop]: Abstraction has 5175 states and 7560 transitions. [2021-11-13 17:32:59,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.0) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-13 17:32:59,470 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 7560 transitions. [2021-11-13 17:32:59,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-13 17:32:59,491 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:32:59,492 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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 17:32:59,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 17:32:59,492 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:32:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:32:59,494 INFO L85 PathProgramCache]: Analyzing trace with hash 158448476, now seen corresponding path program 1 times [2021-11-13 17:32:59,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:32:59,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779274035] [2021-11-13 17:32:59,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:32:59,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:32:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:32:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-11-13 17:32:59,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-11-13 17:32:59,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:59,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-13 17:32:59,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:59,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-11-13 17:32:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:32:59,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:32:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:32:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-11-13 17:32:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:00,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-11-13 17:33:00,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:00,017 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2021-11-13 17:33:00,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:00,017 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779274035] [2021-11-13 17:33:00,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779274035] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:00,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:00,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:33:00,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365103328] [2021-11-13 17:33:00,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:00,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:33:00,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:00,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:33:00,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:33:00,021 INFO L87 Difference]: Start difference. First operand 5175 states and 7560 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 17:33:02,145 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:04,243 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:10,478 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:12,493 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:13,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:13,027 INFO L93 Difference]: Finished difference Result 8374 states and 12311 transitions. [2021-11-13 17:33:13,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:33:13,028 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2021-11-13 17:33:13,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:13,051 INFO L225 Difference]: With dead ends: 8374 [2021-11-13 17:33:13,051 INFO L226 Difference]: Without dead ends: 3211 [2021-11-13 17:33:13,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:33:13,076 INFO L933 BasicCegarLoop]: 1671 mSDtfsCounter, 2031 mSDsluCounter, 3059 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 1376 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12097.71ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2046 SdHoareTripleChecker+Valid, 4730 SdHoareTripleChecker+Invalid, 2595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.72ms SdHoareTripleChecker+Time, 1376 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12734.43ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:13,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2046 Valid, 4730 Invalid, 2595 Unknown, 0 Unchecked, 19.72ms Time], IncrementalHoareTripleChecker [1376 Valid, 1215 Invalid, 4 Unknown, 0 Unchecked, 12734.43ms Time] [2021-11-13 17:33:13,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3211 states. [2021-11-13 17:33:13,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3211 to 2805. [2021-11-13 17:33:13,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2805 states, 1971 states have (on average 1.3363774733637748) internal successors, (2634), 2091 states have internal predecessors, (2634), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 565 states have call predecessors, (884), 576 states have call successors, (884) [2021-11-13 17:33:13,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2805 states to 2805 states and 4095 transitions. [2021-11-13 17:33:13,242 INFO L78 Accepts]: Start accepts. Automaton has 2805 states and 4095 transitions. Word has length 113 [2021-11-13 17:33:13,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:13,242 INFO L470 AbstractCegarLoop]: Abstraction has 2805 states and 4095 transitions. [2021-11-13 17:33:13,242 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (12), 6 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-11-13 17:33:13,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2805 states and 4095 transitions. [2021-11-13 17:33:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-11-13 17:33:13,252 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:13,252 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:13,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 17:33:13,252 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:13,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:13,253 INFO L85 PathProgramCache]: Analyzing trace with hash 382893013, now seen corresponding path program 1 times [2021-11-13 17:33:13,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:13,253 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866650704] [2021-11-13 17:33:13,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:13,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:33:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:33:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:33:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-13 17:33:13,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:33:13,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:13,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-11-13 17:33:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:13,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-11-13 17:33:13,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:33:13,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-11-13 17:33:13,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-11-13 17:33:13,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:33:13,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:33:13,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:13,812 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 17:33:13,813 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:13,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866650704] [2021-11-13 17:33:13,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866650704] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:13,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:13,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 17:33:13,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197068719] [2021-11-13 17:33:13,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:13,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 17:33:13,815 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:13,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:33:13,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:33:13,816 INFO L87 Difference]: Start difference. First operand 2805 states and 4095 transitions. Second operand has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:33:15,936 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:20,690 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2021-11-13 17:33:22,916 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:23,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:23,442 INFO L93 Difference]: Finished difference Result 5964 states and 8801 transitions. [2021-11-13 17:33:23,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:33:23,443 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2021-11-13 17:33:23,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:23,455 INFO L225 Difference]: With dead ends: 5964 [2021-11-13 17:33:23,455 INFO L226 Difference]: Without dead ends: 3188 [2021-11-13 17:33:23,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:33:23,469 INFO L933 BasicCegarLoop]: 1654 mSDtfsCounter, 1400 mSDsluCounter, 3530 mSDsCounter, 0 mSdLazyCounter, 1609 mSolverCounterSat, 943 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8810.59ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 5184 SdHoareTripleChecker+Invalid, 2554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 21.56ms SdHoareTripleChecker+Time, 943 IncrementalHoareTripleChecker+Valid, 1609 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9420.94ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:23,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1409 Valid, 5184 Invalid, 2554 Unknown, 0 Unchecked, 21.56ms Time], IncrementalHoareTripleChecker [943 Valid, 1609 Invalid, 2 Unknown, 0 Unchecked, 9420.94ms Time] [2021-11-13 17:33:23,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3188 states. [2021-11-13 17:33:23,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3188 to 2809. [2021-11-13 17:33:23,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2809 states, 1975 states have (on average 1.3356962025316457) internal successors, (2638), 2095 states have internal predecessors, (2638), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 565 states have call predecessors, (884), 576 states have call successors, (884) [2021-11-13 17:33:23,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2809 states to 2809 states and 4099 transitions. [2021-11-13 17:33:23,640 INFO L78 Accepts]: Start accepts. Automaton has 2809 states and 4099 transitions. Word has length 142 [2021-11-13 17:33:23,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:23,641 INFO L470 AbstractCegarLoop]: Abstraction has 2809 states and 4099 transitions. [2021-11-13 17:33:23,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.714285714285714) internal successors, (96), 3 states have internal predecessors, (96), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:33:23,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2809 states and 4099 transitions. [2021-11-13 17:33:23,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-13 17:33:23,650 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:23,650 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:23,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 17:33:23,651 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:23,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:23,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1859941735, now seen corresponding path program 1 times [2021-11-13 17:33:23,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:23,652 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194902243] [2021-11-13 17:33:23,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:23,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:23,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:33:24,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:33:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:33:24,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-13 17:33:24,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:33:24,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-11-13 17:33:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-11-13 17:33:24,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:33:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-11-13 17:33:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-11-13 17:33:24,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:33:24,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:33:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:24,237 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 17:33:24,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:24,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194902243] [2021-11-13 17:33:24,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194902243] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:33:24,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628031430] [2021-11-13 17:33:24,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:24,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:33:24,239 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:33:24,242 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:33:24,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 17:33:25,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:25,852 INFO L263 TraceCheckSpWp]: Trace formula consists of 4055 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 17:33:25,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:33:26,213 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-13 17:33:26,213 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:33:26,562 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 17:33:26,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628031430] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:33:26,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:33:26,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 9 [2021-11-13 17:33:26,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742127624] [2021-11-13 17:33:26,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:33:26,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-13 17:33:26,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:26,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:33:26,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:33:26,565 INFO L87 Difference]: Start difference. First operand 2809 states and 4099 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (35), 6 states have call predecessors, (35), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 17:33:28,656 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:30,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:36,652 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:38,672 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:39,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:33:39,238 INFO L93 Difference]: Finished difference Result 5972 states and 8809 transitions. [2021-11-13 17:33:39,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 17:33:39,239 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (35), 6 states have call predecessors, (35), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 144 [2021-11-13 17:33:39,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:33:39,253 INFO L225 Difference]: With dead ends: 5972 [2021-11-13 17:33:39,254 INFO L226 Difference]: Without dead ends: 3192 [2021-11-13 17:33:39,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 314 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-13 17:33:39,268 INFO L933 BasicCegarLoop]: 1649 mSDtfsCounter, 1948 mSDsluCounter, 6036 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 1345 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11704.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1957 SdHoareTripleChecker+Valid, 7685 SdHoareTripleChecker+Invalid, 3231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.67ms SdHoareTripleChecker+Time, 1345 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12432.15ms IncrementalHoareTripleChecker+Time [2021-11-13 17:33:39,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1957 Valid, 7685 Invalid, 3231 Unknown, 0 Unchecked, 29.67ms Time], IncrementalHoareTripleChecker [1345 Valid, 1882 Invalid, 4 Unknown, 0 Unchecked, 12432.15ms Time] [2021-11-13 17:33:39,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3192 states. [2021-11-13 17:33:39,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3192 to 2817. [2021-11-13 17:33:39,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2817 states, 1983 states have (on average 1.334341906202723) internal successors, (2646), 2103 states have internal predecessors, (2646), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 565 states have call predecessors, (884), 576 states have call successors, (884) [2021-11-13 17:33:39,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2817 states to 2817 states and 4107 transitions. [2021-11-13 17:33:39,510 INFO L78 Accepts]: Start accepts. Automaton has 2817 states and 4107 transitions. Word has length 144 [2021-11-13 17:33:39,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:33:39,512 INFO L470 AbstractCegarLoop]: Abstraction has 2817 states and 4107 transitions. [2021-11-13 17:33:39,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 5 states have internal predecessors, (127), 2 states have call successors, (35), 6 states have call predecessors, (35), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-11-13 17:33:39,512 INFO L276 IsEmpty]: Start isEmpty. Operand 2817 states and 4107 transitions. [2021-11-13 17:33:39,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-13 17:33:39,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:33:39,522 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:33:39,562 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-13 17:33:39,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-13 17:33:39,741 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:33:39,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:33:39,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1150551971, now seen corresponding path program 2 times [2021-11-13 17:33:39,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:33:39,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528741834] [2021-11-13 17:33:39,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:33:39,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:33:39,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:33:40,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:33:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:33:40,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-13 17:33:40,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:33:40,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:40,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 17:33:40,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 17:33:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:33:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:33:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:33:40,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-13 17:33:40,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:33:40,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:33:40,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:33:40,342 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-11-13 17:33:40,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:33:40,343 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528741834] [2021-11-13 17:33:40,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528741834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:33:40,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:33:40,344 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-13 17:33:40,344 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29426281] [2021-11-13 17:33:40,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:33:40,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 17:33:40,345 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:33:40,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 17:33:40,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-13 17:33:40,346 INFO L87 Difference]: Start difference. First operand 2817 states and 4107 transitions. Second operand has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:33:42,474 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:44,565 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:46,642 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:56,533 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:33:58,546 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:34:01,414 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:34:03,427 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-13 17:34:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:34:04,633 INFO L93 Difference]: Finished difference Result 9145 states and 13521 transitions. [2021-11-13 17:34:04,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-13 17:34:04,634 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 146 [2021-11-13 17:34:04,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 17:34:04,667 INFO L225 Difference]: With dead ends: 9145 [2021-11-13 17:34:04,668 INFO L226 Difference]: Without dead ends: 6357 [2021-11-13 17:34:04,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2021-11-13 17:34:04,684 INFO L933 BasicCegarLoop]: 3231 mSDtfsCounter, 3252 mSDsluCounter, 7074 mSDsCounter, 0 mSdLazyCounter, 3054 mSolverCounterSat, 1735 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22419.25ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3376 SdHoareTripleChecker+Valid, 10305 SdHoareTripleChecker+Invalid, 4796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 46.89ms SdHoareTripleChecker+Time, 1735 IncrementalHoareTripleChecker+Valid, 3054 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23778.12ms IncrementalHoareTripleChecker+Time [2021-11-13 17:34:04,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3376 Valid, 10305 Invalid, 4796 Unknown, 0 Unchecked, 46.89ms Time], IncrementalHoareTripleChecker [1735 Valid, 3054 Invalid, 7 Unknown, 0 Unchecked, 23778.12ms Time] [2021-11-13 17:34:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2021-11-13 17:34:04,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 2821. [2021-11-13 17:34:04,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2821 states, 1987 states have (on average 1.3336688475088072) internal successors, (2650), 2107 states have internal predecessors, (2650), 577 states have call successors, (577), 202 states have call predecessors, (577), 256 states have return successors, (884), 565 states have call predecessors, (884), 576 states have call successors, (884) [2021-11-13 17:34:04,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2821 states to 2821 states and 4111 transitions. [2021-11-13 17:34:04,951 INFO L78 Accepts]: Start accepts. Automaton has 2821 states and 4111 transitions. Word has length 146 [2021-11-13 17:34:04,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 17:34:04,952 INFO L470 AbstractCegarLoop]: Abstraction has 2821 states and 4111 transitions. [2021-11-13 17:34:04,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.25) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-11-13 17:34:04,952 INFO L276 IsEmpty]: Start isEmpty. Operand 2821 states and 4111 transitions. [2021-11-13 17:34:04,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-13 17:34:04,961 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 17:34:04,961 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:34:04,962 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 17:34:04,962 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 17:34:04,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:34:04,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1010003361, now seen corresponding path program 1 times [2021-11-13 17:34:04,963 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:34:04,963 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488021061] [2021-11-13 17:34:04,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:04,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:34:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-11-13 17:34:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-11-13 17:34:05,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-11-13 17:34:05,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-11-13 17:34:05,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-11-13 17:34:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:34:05,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-11-13 17:34:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:34:05,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-11-13 17:34:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-11-13 17:34:05,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-11-13 17:34:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-11-13 17:34:05,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-11-13 17:34:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-13 17:34:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-13 17:34:05,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:34:05,898 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-13 17:34:05,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:34:05,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488021061] [2021-11-13 17:34:05,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488021061] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:34:05,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [771498884] [2021-11-13 17:34:05,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:34:05,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:34:05,899 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:34:05,900 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:34:05,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cb016503-f1a4-4cbe-921e-29664955e751/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process