./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa --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 e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:18:19,676 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:18:19,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:18:19,706 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:18:19,707 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:18:19,708 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:18:19,710 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:18:19,712 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:18:19,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:18:19,715 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:18:19,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:18:19,717 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:18:19,718 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:18:19,719 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:18:19,720 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:18:19,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:18:19,722 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:18:19,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:18:19,726 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:18:19,728 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:18:19,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:18:19,732 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:18:19,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:18:19,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:18:19,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:18:19,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:18:19,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:18:19,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:18:19,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:18:19,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:18:19,742 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:18:19,743 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:18:19,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:18:19,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:18:19,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:18:19,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:18:19,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:18:19,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:18:19,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:18:19,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:18:19,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:18:19,749 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 20:18:19,772 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:18:19,773 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:18:19,773 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:18:19,773 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:18:19,774 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:18:19,774 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:18:19,775 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:18:19,775 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:18:19,775 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:18:19,775 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:18:19,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:18:19,775 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:18:19,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:18:19,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:18:19,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:18:19,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:18:19,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:18:19,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:18:19,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:18:19,777 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:18:19,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:18:19,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:18:19,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:18:19,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:18:19,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:18:19,778 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:18:19,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:18:19,778 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:18:19,778 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:18:19,778 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:18:19,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:18:19,779 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_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b [2021-12-06 20:18:19,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:18:19,983 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:18:19,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:18:19,986 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:18:19,986 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:18:19,987 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2021-12-06 20:18:20,029 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data/971a9a0e3/2d8c56ead8a0428ca466fce889fee945/FLAG967e9066a [2021-12-06 20:18:20,595 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:18:20,596 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2021-12-06 20:18:20,618 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data/971a9a0e3/2d8c56ead8a0428ca466fce889fee945/FLAG967e9066a [2021-12-06 20:18:21,063 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data/971a9a0e3/2d8c56ead8a0428ca466fce889fee945 [2021-12-06 20:18:21,066 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:18:21,067 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:18:21,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:18:21,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:18:21,072 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:18:21,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:18:21" (1/1) ... [2021-12-06 20:18:21,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3331ebcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:21, skipping insertion in model container [2021-12-06 20:18:21,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:18:21" (1/1) ... [2021-12-06 20:18:21,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:18:21,244 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:18:22,144 WARN L230 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_e75cdd3b-958c-4cd1-b473-c42e392a19c5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2021-12-06 20:18:22,178 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-06 20:18:22,184 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:18:22,208 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:18:22,412 WARN L230 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_e75cdd3b-958c-4cd1-b473-c42e392a19c5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2021-12-06 20:18:22,417 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-06 20:18:22,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:18:22,465 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:18:22,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22 WrapperNode [2021-12-06 20:18:22,466 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:18:22,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:18:22,467 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:18:22,467 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:18:22,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,509 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,613 INFO L137 Inliner]: procedures = 141, calls = 1103, calls flagged for inlining = 57, calls inlined = 55, statements flattened = 2436 [2021-12-06 20:18:22,613 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:18:22,614 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:18:22,614 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:18:22,614 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:18:22,620 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,692 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:18:22,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:18:22,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:18:22,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:18:22,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (1/1) ... [2021-12-06 20:18:22,725 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:18:22,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:18:22,744 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:18:22,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:18:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure atm_sk [2021-12-06 20:18:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_sk [2021-12-06 20:18:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-12-06 20:18:22,783 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-12-06 20:18:22,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 20:18:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure change_bit [2021-12-06 20:18:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure change_bit [2021-12-06 20:18:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure atm_alloc_charge [2021-12-06 20:18:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_alloc_charge [2021-12-06 20:18:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-06 20:18:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 20:18:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 20:18:22,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 20:18:22,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 20:18:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 20:18:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 20:18:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 20:18:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-06 20:18:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-06 20:18:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 20:18:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 20:18:22,785 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 20:18:22,785 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 20:18:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 20:18:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 20:18:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure sk_sleep [2021-12-06 20:18:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_sleep [2021-12-06 20:18:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-06 20:18:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-06 20:18:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_ioctl [2021-12-06 20:18:22,786 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_ioctl [2021-12-06 20:18:22,786 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 20:18:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 20:18:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 20:18:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 20:18:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 20:18:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 20:18:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 20:18:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-06 20:18:22,787 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-06 20:18:22,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 20:18:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 20:18:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_dev_close [2021-12-06 20:18:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_dev_close [2021-12-06 20:18:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 20:18:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 20:18:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 20:18:22,788 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 20:18:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 20:18:22,788 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-06 20:18:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-06 20:18:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2021-12-06 20:18:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2021-12-06 20:18:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:18:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-06 20:18:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-06 20:18:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_send [2021-12-06 20:18:22,789 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_send [2021-12-06 20:18:22,789 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-06 20:18:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-06 20:18:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 20:18:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:18:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 20:18:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 20:18:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-06 20:18:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_create [2021-12-06 20:18:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_create [2021-12-06 20:18:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_close [2021-12-06 20:18:22,790 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_close [2021-12-06 20:18:22,790 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_deregister [2021-12-06 20:18:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_deregister [2021-12-06 20:18:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:18:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 20:18:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_close [2021-12-06 20:18:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_close [2021-12-06 20:18:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-06 20:18:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-06 20:18:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_put [2021-12-06 20:18:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_put [2021-12-06 20:18:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-06 20:18:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-06 20:18:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_lookup [2021-12-06 20:18:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_lookup [2021-12-06 20:18:22,791 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-06 20:18:22,791 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-06 20:18:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:18:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_send [2021-12-06 20:18:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_send [2021-12-06 20:18:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-06 20:18:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-06 20:18:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_send_control [2021-12-06 20:18:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_send_control [2021-12-06 20:18:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 20:18:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2021-12-06 20:18:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2021-12-06 20:18:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:18:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:18:22,792 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2021-12-06 20:18:22,792 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2021-12-06 20:18:23,056 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:18:23,058 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:18:26,181 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 20:18:34,281 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:18:34,295 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:18:34,296 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 20:18:34,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:18:34 BoogieIcfgContainer [2021-12-06 20:18:34,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:18:34,299 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:18:34,299 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:18:34,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:18:34,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:18:21" (1/3) ... [2021-12-06 20:18:34,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b54cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:18:34, skipping insertion in model container [2021-12-06 20:18:34,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:18:22" (2/3) ... [2021-12-06 20:18:34,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75b54cc8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:18:34, skipping insertion in model container [2021-12-06 20:18:34,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:18:34" (3/3) ... [2021-12-06 20:18:34,303 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2021-12-06 20:18:34,307 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:18:34,307 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:18:34,346 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:18:34,351 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:18:34,351 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:18:34,376 INFO L276 IsEmpty]: Start isEmpty. Operand has 628 states, 450 states have (on average 1.3444444444444446) internal successors, (605), 467 states have internal predecessors, (605), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) [2021-12-06 20:18:34,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 20:18:34,386 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:34,387 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:18:34,387 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:34,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:34,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1856106833, now seen corresponding path program 1 times [2021-12-06 20:18:34,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:34,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209413263] [2021-12-06 20:18:34,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:34,398 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:18:34,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:34,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:18:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:34,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:18:34,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:18:34,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:34,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:18:34,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:34,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:18:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:18:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:34,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:18:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:34,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:34,955 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-06 20:18:34,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:34,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209413263] [2021-12-06 20:18:34,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209413263] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:18:34,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:18:34,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 20:18:34,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985247991] [2021-12-06 20:18:34,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:18:34,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 20:18:34,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:34,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 20:18:34,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:18:34,984 INFO L87 Difference]: Start difference. First operand has 628 states, 450 states have (on average 1.3444444444444446) internal successors, (605), 467 states have internal predecessors, (605), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 20:18:37,214 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:18:40,390 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:18:42,535 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:18:42,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:18:42,800 INFO L93 Difference]: Finished difference Result 1372 states and 1975 transitions. [2021-12-06 20:18:42,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:18:42,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 133 [2021-12-06 20:18:42,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:18:42,818 INFO L225 Difference]: With dead ends: 1372 [2021-12-06 20:18:42,818 INFO L226 Difference]: Without dead ends: 736 [2021-12-06 20:18:42,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:18:42,828 INFO L933 BasicCegarLoop]: 814 mSDtfsCounter, 556 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 398 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 1581 SdHoareTripleChecker+Invalid, 912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 398 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:18:42,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 1581 Invalid, 912 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [398 Valid, 511 Invalid, 3 Unknown, 0 Unchecked, 7.7s Time] [2021-12-06 20:18:42,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-12-06 20:18:42,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 615. [2021-12-06 20:18:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 444 states have (on average 1.3288288288288288) internal successors, (590), 454 states have internal predecessors, (590), 132 states have call successors, (132), 39 states have call predecessors, (132), 38 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2021-12-06 20:18:42,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 852 transitions. [2021-12-06 20:18:42,902 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 852 transitions. Word has length 133 [2021-12-06 20:18:42,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:18:42,903 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 852 transitions. [2021-12-06 20:18:42,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 20:18:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 852 transitions. [2021-12-06 20:18:42,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 20:18:42,906 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:18:42,906 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:18:42,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:18:42,907 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:18:42,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:18:42,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1666389307, now seen corresponding path program 1 times [2021-12-06 20:18:42,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:18:42,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152429220] [2021-12-06 20:18:42,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:18:42,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:18:42,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:18:43,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:43,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:18:43,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:43,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:43,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:18:43,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:43,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:18:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:43,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:18:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:43,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:18:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:18:43,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:18:43,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:43,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:18:43,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:18:43,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:18:43,239 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-06 20:18:43,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:18:43,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152429220] [2021-12-06 20:18:43,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152429220] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:18:43,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:18:43,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:18:43,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252422751] [2021-12-06 20:18:43,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:18:43,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:18:43,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:18:43,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:18:43,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:18:43,242 INFO L87 Difference]: Start difference. First operand 615 states and 852 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 20:18:45,547 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:18:48,344 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:18:50,361 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:18:52,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:18:56,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:18:58,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:00,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:01,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:01,675 INFO L93 Difference]: Finished difference Result 2011 states and 2837 transitions. [2021-12-06 20:19:01,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:19:01,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 133 [2021-12-06 20:19:01,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:01,690 INFO L225 Difference]: With dead ends: 2011 [2021-12-06 20:19:01,690 INFO L226 Difference]: Without dead ends: 1420 [2021-12-06 20:19:01,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:19:01,694 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 1570 mSDsluCounter, 1861 mSDsCounter, 0 mSdLazyCounter, 1282 mSolverCounterSat, 807 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 2761 SdHoareTripleChecker+Invalid, 2096 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 1282 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:01,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1668 Valid, 2761 Invalid, 2096 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 1282 Invalid, 7 Unknown, 0 Unchecked, 18.2s Time] [2021-12-06 20:19:01,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1420 states. [2021-12-06 20:19:01,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1420 to 1186. [2021-12-06 20:19:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 860 states have (on average 1.3325581395348838) internal successors, (1146), 879 states have internal predecessors, (1146), 250 states have call successors, (250), 75 states have call predecessors, (250), 75 states have return successors, (252), 243 states have call predecessors, (252), 248 states have call successors, (252) [2021-12-06 20:19:01,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1648 transitions. [2021-12-06 20:19:01,775 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1648 transitions. Word has length 133 [2021-12-06 20:19:01,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:01,776 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 1648 transitions. [2021-12-06 20:19:01,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 20:19:01,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1648 transitions. [2021-12-06 20:19:01,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-12-06 20:19:01,780 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:01,780 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:19:01,780 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:19:01,781 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:01,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:01,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1873060620, now seen corresponding path program 1 times [2021-12-06 20:19:01,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:01,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138051727] [2021-12-06 20:19:01,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:01,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:01,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:01,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:19:01,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:01,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:01,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:01,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:01,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:01,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:01,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:01,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:02,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:19:02,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:02,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:19:02,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:19:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:02,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:19:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:02,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:02,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:19:02,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:02,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:19:02,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:02,176 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-06 20:19:02,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:02,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138051727] [2021-12-06 20:19:02,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138051727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:02,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:02,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:02,177 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544526212] [2021-12-06 20:19:02,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:02,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:02,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:02,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:02,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:02,178 INFO L87 Difference]: Start difference. First operand 1186 states and 1648 transitions. Second operand has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 20:19:04,507 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:07,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:09,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:13,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:16,093 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:18,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:18,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:18,602 INFO L93 Difference]: Finished difference Result 2623 states and 3679 transitions. [2021-12-06 20:19:18,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:19:18,603 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 136 [2021-12-06 20:19:18,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:18,613 INFO L225 Difference]: With dead ends: 2623 [2021-12-06 20:19:18,614 INFO L226 Difference]: Without dead ends: 1461 [2021-12-06 20:19:18,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:19:18,621 INFO L933 BasicCegarLoop]: 1010 mSDtfsCounter, 1415 mSDsluCounter, 2347 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 578 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 1769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 578 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:18,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 3357 Invalid, 1769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [578 Valid, 1185 Invalid, 6 Unknown, 0 Unchecked, 16.2s Time] [2021-12-06 20:19:18,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2021-12-06 20:19:18,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1212. [2021-12-06 20:19:18,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 880 states have (on average 1.3295454545454546) internal successors, (1170), 899 states have internal predecessors, (1170), 251 states have call successors, (251), 80 states have call predecessors, (251), 80 states have return successors, (253), 244 states have call predecessors, (253), 249 states have call successors, (253) [2021-12-06 20:19:18,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1674 transitions. [2021-12-06 20:19:18,684 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1674 transitions. Word has length 136 [2021-12-06 20:19:18,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:18,684 INFO L470 AbstractCegarLoop]: Abstraction has 1212 states and 1674 transitions. [2021-12-06 20:19:18,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.714285714285714) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 20:19:18,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1674 transitions. [2021-12-06 20:19:18,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-06 20:19:18,687 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:18,687 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:18,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:19:18,688 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:18,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:18,688 INFO L85 PathProgramCache]: Analyzing trace with hash -764946523, now seen corresponding path program 1 times [2021-12-06 20:19:18,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:18,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099621921] [2021-12-06 20:19:18,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:18,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:18,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:19:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:18,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:18,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:19:18,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:18,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:18,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:19:18,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:18,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:19:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:18,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:19:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:18,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:19:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:18,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:19:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:19,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:19,006 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-06 20:19:19,006 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:19,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099621921] [2021-12-06 20:19:19,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099621921] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:19,007 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:19,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:19:19,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183528893] [2021-12-06 20:19:19,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:19,007 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:19:19,007 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:19,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:19:19,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:19:19,008 INFO L87 Difference]: Start difference. First operand 1212 states and 1674 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 20:19:21,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:24,112 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:26,150 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:30,402 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:32,417 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:32,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:32,955 INFO L93 Difference]: Finished difference Result 4018 states and 5662 transitions. [2021-12-06 20:19:32,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:19:32,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 5 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 144 [2021-12-06 20:19:32,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:32,973 INFO L225 Difference]: With dead ends: 4018 [2021-12-06 20:19:32,973 INFO L226 Difference]: Without dead ends: 2826 [2021-12-06 20:19:32,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:19:32,979 INFO L933 BasicCegarLoop]: 913 mSDtfsCounter, 1574 mSDsluCounter, 1524 mSDsCounter, 0 mSdLazyCounter, 978 mSolverCounterSat, 807 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 1790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 807 IncrementalHoareTripleChecker+Valid, 978 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:32,979 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1667 Valid, 2437 Invalid, 1790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [807 Valid, 978 Invalid, 5 Unknown, 0 Unchecked, 13.7s Time] [2021-12-06 20:19:32,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2826 states. [2021-12-06 20:19:33,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2826 to 2337. [2021-12-06 20:19:33,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2337 states, 1701 states have (on average 1.332745443856555) internal successors, (2267), 1734 states have internal predecessors, (2267), 483 states have call successors, (483), 152 states have call predecessors, (483), 152 states have return successors, (489), 472 states have call predecessors, (489), 481 states have call successors, (489) [2021-12-06 20:19:33,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2337 states to 2337 states and 3239 transitions. [2021-12-06 20:19:33,079 INFO L78 Accepts]: Start accepts. Automaton has 2337 states and 3239 transitions. Word has length 144 [2021-12-06 20:19:33,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:33,079 INFO L470 AbstractCegarLoop]: Abstraction has 2337 states and 3239 transitions. [2021-12-06 20:19:33,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (12), 5 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 20:19:33,080 INFO L276 IsEmpty]: Start isEmpty. Operand 2337 states and 3239 transitions. [2021-12-06 20:19:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-06 20:19:33,082 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:33,082 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:19:33,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:19:33,082 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:33,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1630948905, now seen corresponding path program 1 times [2021-12-06 20:19:33,083 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:33,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223842310] [2021-12-06 20:19:33,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:33,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:33,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:19:33,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:33,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:33,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:33,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:19:33,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:33,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:19:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:33,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:33,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:19:33,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:19:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:19:33,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:33,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:19:33,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:33,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 20:19:33,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 20:19:33,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:33,409 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-06 20:19:33,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:33,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223842310] [2021-12-06 20:19:33,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223842310] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:33,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:33,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:33,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486306573] [2021-12-06 20:19:33,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:33,410 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:33,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:33,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:33,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:33,411 INFO L87 Difference]: Start difference. First operand 2337 states and 3239 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:19:36,121 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:38,153 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:41,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:43,522 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:43,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:43,920 INFO L93 Difference]: Finished difference Result 4849 states and 6763 transitions. [2021-12-06 20:19:43,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:19:43,921 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 150 [2021-12-06 20:19:43,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:43,935 INFO L225 Difference]: With dead ends: 4849 [2021-12-06 20:19:43,936 INFO L226 Difference]: Without dead ends: 2536 [2021-12-06 20:19:43,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:19:43,944 INFO L933 BasicCegarLoop]: 685 mSDtfsCounter, 1185 mSDsluCounter, 987 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 592 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 1229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 592 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:43,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1269 Valid, 1672 Invalid, 1229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [592 Valid, 633 Invalid, 4 Unknown, 0 Unchecked, 10.3s Time] [2021-12-06 20:19:43,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2536 states. [2021-12-06 20:19:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2536 to 2005. [2021-12-06 20:19:44,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2005 states, 1460 states have (on average 1.3253424657534247) internal successors, (1935), 1485 states have internal predecessors, (1935), 403 states have call successors, (403), 142 states have call predecessors, (403), 141 states have return successors, (401), 393 states have call predecessors, (401), 401 states have call successors, (401) [2021-12-06 20:19:44,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2005 states to 2005 states and 2739 transitions. [2021-12-06 20:19:44,023 INFO L78 Accepts]: Start accepts. Automaton has 2005 states and 2739 transitions. Word has length 150 [2021-12-06 20:19:44,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:44,023 INFO L470 AbstractCegarLoop]: Abstraction has 2005 states and 2739 transitions. [2021-12-06 20:19:44,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (16), 6 states have call predecessors, (16), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:19:44,024 INFO L276 IsEmpty]: Start isEmpty. Operand 2005 states and 2739 transitions. [2021-12-06 20:19:44,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 20:19:44,027 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:44,028 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:19:44,028 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:19:44,028 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:44,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:44,028 INFO L85 PathProgramCache]: Analyzing trace with hash -2114242925, now seen corresponding path program 1 times [2021-12-06 20:19:44,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:44,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932606506] [2021-12-06 20:19:44,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:44,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:19:44,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:44,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:44,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:44,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:44,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:19:44,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:44,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:44,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:19:44,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:44,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:19:44,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:44,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:44,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:19:44,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:44,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:19:44,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:19:44,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:44,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 20:19:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 20:19:44,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 20:19:44,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-06 20:19:44,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2021-12-06 20:19:44,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:44,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932606506] [2021-12-06 20:19:44,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932606506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:44,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:44,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:19:44,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443343580] [2021-12-06 20:19:44,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:44,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:19:44,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:44,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:19:44,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:19:44,370 INFO L87 Difference]: Start difference. First operand 2005 states and 2739 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:19:47,486 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:49,523 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:53,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:55,140 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:19:55,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:19:55,814 INFO L93 Difference]: Finished difference Result 4611 states and 6384 transitions. [2021-12-06 20:19:55,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:19:55,815 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 175 [2021-12-06 20:19:55,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:19:55,835 INFO L225 Difference]: With dead ends: 4611 [2021-12-06 20:19:55,835 INFO L226 Difference]: Without dead ends: 2630 [2021-12-06 20:19:55,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:19:55,844 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 1116 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 1053 mSolverCounterSat, 628 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1198 SdHoareTripleChecker+Valid, 2437 SdHoareTripleChecker+Invalid, 1685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 628 IncrementalHoareTripleChecker+Valid, 1053 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:19:55,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1198 Valid, 2437 Invalid, 1685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [628 Valid, 1053 Invalid, 4 Unknown, 0 Unchecked, 11.2s Time] [2021-12-06 20:19:55,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2021-12-06 20:19:55,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2080. [2021-12-06 20:19:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1512 states have (on average 1.3326719576719577) internal successors, (2015), 1537 states have internal predecessors, (2015), 416 states have call successors, (416), 152 states have call predecessors, (416), 151 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2021-12-06 20:19:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 2845 transitions. [2021-12-06 20:19:55,925 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 2845 transitions. Word has length 175 [2021-12-06 20:19:55,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:19:55,925 INFO L470 AbstractCegarLoop]: Abstraction has 2080 states and 2845 transitions. [2021-12-06 20:19:55,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:19:55,925 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 2845 transitions. [2021-12-06 20:19:55,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-12-06 20:19:55,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:19:55,930 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:19:55,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:19:55,930 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:19:55,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:19:55,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1065041216, now seen corresponding path program 1 times [2021-12-06 20:19:55,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:19:55,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706576663] [2021-12-06 20:19:55,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:19:55,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:19:55,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:19:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:19:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:56,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:19:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:56,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:56,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:19:56,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:19:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:56,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:19:56,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:56,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:19:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:19:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:56,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:19:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:19:56,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 20:19:56,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 20:19:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:19:56,284 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-06 20:19:56,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:19:56,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706576663] [2021-12-06 20:19:56,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706576663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:19:56,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:19:56,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:19:56,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623265886] [2021-12-06 20:19:56,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:19:56,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:19:56,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:19:56,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:19:56,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:19:56,286 INFO L87 Difference]: Start difference. First operand 2080 states and 2845 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-06 20:19:59,444 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:03,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:03,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:20:03,512 INFO L93 Difference]: Finished difference Result 4838 states and 6911 transitions. [2021-12-06 20:20:03,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:20:03,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 178 [2021-12-06 20:20:03,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:20:03,531 INFO L225 Difference]: With dead ends: 4838 [2021-12-06 20:20:03,531 INFO L226 Difference]: Without dead ends: 3141 [2021-12-06 20:20:03,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:20:03,538 INFO L933 BasicCegarLoop]: 858 mSDtfsCounter, 695 mSDsluCounter, 2233 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 321 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 3091 SdHoareTripleChecker+Invalid, 1371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:20:03,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 3091 Invalid, 1371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1048 Invalid, 2 Unknown, 0 Unchecked, 7.0s Time] [2021-12-06 20:20:03,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3141 states. [2021-12-06 20:20:03,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3141 to 2084. [2021-12-06 20:20:03,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1516 states have (on average 1.3317941952506596) internal successors, (2019), 1541 states have internal predecessors, (2019), 416 states have call successors, (416), 152 states have call predecessors, (416), 151 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2021-12-06 20:20:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2849 transitions. [2021-12-06 20:20:03,641 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2849 transitions. Word has length 178 [2021-12-06 20:20:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:03,641 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 2849 transitions. [2021-12-06 20:20:03,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-06 20:20:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2849 transitions. [2021-12-06 20:20:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-12-06 20:20:03,645 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:03,645 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:20:03,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:20:03,646 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:03,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:03,646 INFO L85 PathProgramCache]: Analyzing trace with hash -1338240510, now seen corresponding path program 1 times [2021-12-06 20:20:03,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:03,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457414853] [2021-12-06 20:20:03,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:03,646 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:03,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:20:03,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:03,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:03,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:20:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:20:03,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:20:03,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:03,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:03,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:20:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:20:03,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:03,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:03,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:20:03,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:20:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:03,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:03,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 20:20:03,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 20:20:04,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:04,007 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-06 20:20:04,007 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:04,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457414853] [2021-12-06 20:20:04,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457414853] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:04,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:04,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:20:04,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649095906] [2021-12-06 20:20:04,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:04,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:20:04,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:04,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:20:04,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:20:04,009 INFO L87 Difference]: Start difference. First operand 2084 states and 2849 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-06 20:20:07,021 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:10,611 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:12,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:13,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:20:13,102 INFO L93 Difference]: Finished difference Result 4846 states and 6919 transitions. [2021-12-06 20:20:13,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:20:13,103 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) Word has length 179 [2021-12-06 20:20:13,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:20:13,124 INFO L225 Difference]: With dead ends: 4846 [2021-12-06 20:20:13,124 INFO L226 Difference]: Without dead ends: 3145 [2021-12-06 20:20:13,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:20:13,130 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 788 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 930 mSolverCounterSat, 348 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 3099 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 930 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:20:13,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [842 Valid, 3099 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 930 Invalid, 3 Unknown, 0 Unchecked, 8.9s Time] [2021-12-06 20:20:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3145 states. [2021-12-06 20:20:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3145 to 2084. [2021-12-06 20:20:13,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2084 states, 1516 states have (on average 1.3317941952506596) internal successors, (2019), 1541 states have internal predecessors, (2019), 416 states have call successors, (416), 152 states have call predecessors, (416), 151 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2021-12-06 20:20:13,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2084 states to 2084 states and 2849 transitions. [2021-12-06 20:20:13,231 INFO L78 Accepts]: Start accepts. Automaton has 2084 states and 2849 transitions. Word has length 179 [2021-12-06 20:20:13,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:13,231 INFO L470 AbstractCegarLoop]: Abstraction has 2084 states and 2849 transitions. [2021-12-06 20:20:13,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (13), 1 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-06 20:20:13,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2084 states and 2849 transitions. [2021-12-06 20:20:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-06 20:20:13,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:13,235 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:20:13,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:20:13,236 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:13,236 INFO L85 PathProgramCache]: Analyzing trace with hash -463674758, now seen corresponding path program 1 times [2021-12-06 20:20:13,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:13,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029269011] [2021-12-06 20:20:13,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:13,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:20:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:20:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:20:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:20:13,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:13,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:13,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:20:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:13,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:13,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:20:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:13,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:20:13,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:20:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 20:20:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 20:20:13,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-06 20:20:13,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 20:20:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:13,679 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-06 20:20:13,679 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:13,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029269011] [2021-12-06 20:20:13,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029269011] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:13,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:13,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:20:13,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906624346] [2021-12-06 20:20:13,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:13,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:20:13,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:13,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:20:13,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:20:13,681 INFO L87 Difference]: Start difference. First operand 2084 states and 2849 transitions. Second operand has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:20:16,780 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:18,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:20,840 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:24,387 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:26,395 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:28,480 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:28,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:20:28,975 INFO L93 Difference]: Finished difference Result 4334 states and 6019 transitions. [2021-12-06 20:20:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:20:28,976 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 185 [2021-12-06 20:20:28,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:20:28,989 INFO L225 Difference]: With dead ends: 4334 [2021-12-06 20:20:28,989 INFO L226 Difference]: Without dead ends: 2633 [2021-12-06 20:20:28,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:20:28,994 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 397 mSDsluCounter, 2021 mSDsCounter, 0 mSdLazyCounter, 1163 mSolverCounterSat, 321 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 422 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 1490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1163 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:20:28,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [422 Valid, 2684 Invalid, 1490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [321 Valid, 1163 Invalid, 6 Unknown, 0 Unchecked, 15.1s Time] [2021-12-06 20:20:28,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2633 states. [2021-12-06 20:20:29,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2633 to 2088. [2021-12-06 20:20:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2088 states, 1520 states have (on average 1.330921052631579) internal successors, (2023), 1545 states have internal predecessors, (2023), 416 states have call successors, (416), 152 states have call predecessors, (416), 151 states have return successors, (414), 410 states have call predecessors, (414), 414 states have call successors, (414) [2021-12-06 20:20:29,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2088 states to 2088 states and 2853 transitions. [2021-12-06 20:20:29,073 INFO L78 Accepts]: Start accepts. Automaton has 2088 states and 2853 transitions. Word has length 185 [2021-12-06 20:20:29,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:29,073 INFO L470 AbstractCegarLoop]: Abstraction has 2088 states and 2853 transitions. [2021-12-06 20:20:29,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.625) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (19), 6 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:20:29,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2088 states and 2853 transitions. [2021-12-06 20:20:29,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-06 20:20:29,077 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:29,078 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:20:29,078 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:20:29,078 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:29,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:29,078 INFO L85 PathProgramCache]: Analyzing trace with hash 255512636, now seen corresponding path program 1 times [2021-12-06 20:20:29,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:29,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1491594215] [2021-12-06 20:20:29,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:29,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:20:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:29,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:29,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:20:29,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:29,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:29,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:20:29,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:29,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:20:29,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:29,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:20:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:29,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:29,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:20:29,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:29,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:20:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:29,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:20:29,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:29,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 20:20:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 20:20:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:29,574 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-06 20:20:29,575 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:29,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1491594215] [2021-12-06 20:20:29,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1491594215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:29,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:29,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:20:29,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21199900] [2021-12-06 20:20:29,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:29,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:20:29,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:29,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:20:29,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:20:29,578 INFO L87 Difference]: Start difference. First operand 2088 states and 2853 transitions. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:20:33,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:35,089 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:39,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:41,836 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:44,189 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:46,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:48,518 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:49,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:20:49,024 INFO L93 Difference]: Finished difference Result 5662 states and 8325 transitions. [2021-12-06 20:20:49,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:20:49,025 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 185 [2021-12-06 20:20:49,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:20:49,047 INFO L225 Difference]: With dead ends: 5662 [2021-12-06 20:20:49,047 INFO L226 Difference]: Without dead ends: 3957 [2021-12-06 20:20:49,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:20:49,053 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 1412 mSDsluCounter, 5094 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 504 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1480 SdHoareTripleChecker+Valid, 6000 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:20:49,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1480 Valid, 6000 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [504 Valid, 1930 Invalid, 7 Unknown, 0 Unchecked, 19.0s Time] [2021-12-06 20:20:49,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3957 states. [2021-12-06 20:20:49,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3957 to 2096. [2021-12-06 20:20:49,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2096 states, 1526 states have (on average 1.3296199213630406) internal successors, (2029), 1551 states have internal predecessors, (2029), 416 states have call successors, (416), 152 states have call predecessors, (416), 153 states have return successors, (418), 412 states have call predecessors, (418), 414 states have call successors, (418) [2021-12-06 20:20:49,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2096 states to 2096 states and 2863 transitions. [2021-12-06 20:20:49,163 INFO L78 Accepts]: Start accepts. Automaton has 2096 states and 2863 transitions. Word has length 185 [2021-12-06 20:20:49,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:20:49,163 INFO L470 AbstractCegarLoop]: Abstraction has 2096 states and 2863 transitions. [2021-12-06 20:20:49,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (15), 7 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:20:49,164 INFO L276 IsEmpty]: Start isEmpty. Operand 2096 states and 2863 transitions. [2021-12-06 20:20:49,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-06 20:20:49,167 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:20:49,167 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:20:49,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:20:49,168 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:20:49,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:20:49,168 INFO L85 PathProgramCache]: Analyzing trace with hash -388615980, now seen corresponding path program 1 times [2021-12-06 20:20:49,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:20:49,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440540497] [2021-12-06 20:20:49,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:20:49,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:20:49,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:20:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:20:49,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:49,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:20:49,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:20:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:49,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:20:49,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:49,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:20:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:20:49,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:20:49,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:20:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 20:20:49,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 20:20:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:20:49,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 20:20:49,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-06 20:20:49,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:20:49,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:20:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-06 20:20:49,869 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:20:49,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440540497] [2021-12-06 20:20:49,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440540497] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:20:49,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:20:49,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-06 20:20:49,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777414935] [2021-12-06 20:20:49,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:20:49,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:20:49,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:20:49,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:20:49,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:20:49,871 INFO L87 Difference]: Start difference. First operand 2096 states and 2863 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:20:53,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:20:55,580 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:00,063 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:02,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:02,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:02,707 INFO L93 Difference]: Finished difference Result 4364 states and 6055 transitions. [2021-12-06 20:21:02,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:21:02,708 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 197 [2021-12-06 20:21:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:02,721 INFO L225 Difference]: With dead ends: 4364 [2021-12-06 20:21:02,721 INFO L226 Difference]: Without dead ends: 2651 [2021-12-06 20:21:02,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:21:02,727 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 790 mSDsluCounter, 4164 mSDsCounter, 0 mSdLazyCounter, 1657 mSolverCounterSat, 655 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 4850 SdHoareTripleChecker+Invalid, 2316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 1657 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:02,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 4850 Invalid, 2316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 1657 Invalid, 4 Unknown, 0 Unchecked, 12.4s Time] [2021-12-06 20:21:02,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2021-12-06 20:21:02,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2108. [2021-12-06 20:21:02,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 1534 states have (on average 1.3279009126466754) internal successors, (2037), 1559 states have internal predecessors, (2037), 416 states have call successors, (416), 152 states have call predecessors, (416), 157 states have return successors, (434), 416 states have call predecessors, (434), 414 states have call successors, (434) [2021-12-06 20:21:02,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2887 transitions. [2021-12-06 20:21:02,824 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2887 transitions. Word has length 197 [2021-12-06 20:21:02,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:02,824 INFO L470 AbstractCegarLoop]: Abstraction has 2108 states and 2887 transitions. [2021-12-06 20:21:02,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:21:02,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2887 transitions. [2021-12-06 20:21:02,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-06 20:21:02,827 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:02,827 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:21:02,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:21:02,828 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:02,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:02,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1443188453, now seen corresponding path program 1 times [2021-12-06 20:21:02,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:02,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804319707] [2021-12-06 20:21:02,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:02,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:02,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:02,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:02,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:03,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:21:03,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:03,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:21:03,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:21:03,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:21:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:21:03,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:03,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:21:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:21:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 20:21:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 20:21:03,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:03,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-06 20:21:03,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 20:21:03,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 20:21:03,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:03,410 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 221 trivial. 0 not checked. [2021-12-06 20:21:03,410 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:03,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804319707] [2021-12-06 20:21:03,410 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804319707] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:03,410 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:21:03,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:21:03,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444802134] [2021-12-06 20:21:03,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:03,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:21:03,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:03,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:21:03,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:21:03,412 INFO L87 Difference]: Start difference. First operand 2108 states and 2887 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:21:06,911 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:08,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:13,421 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:15,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:17,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:19,720 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:20,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:20,442 INFO L93 Difference]: Finished difference Result 4763 states and 6744 transitions. [2021-12-06 20:21:20,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 20:21:20,443 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 196 [2021-12-06 20:21:20,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:20,456 INFO L225 Difference]: With dead ends: 4763 [2021-12-06 20:21:20,457 INFO L226 Difference]: Without dead ends: 3038 [2021-12-06 20:21:20,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:21:20,463 INFO L933 BasicCegarLoop]: 883 mSDtfsCounter, 672 mSDsluCounter, 5724 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 450 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 731 SdHoareTripleChecker+Valid, 6607 SdHoareTripleChecker+Invalid, 2233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 450 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:20,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [731 Valid, 6607 Invalid, 2233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [450 Valid, 1777 Invalid, 6 Unknown, 0 Unchecked, 16.7s Time] [2021-12-06 20:21:20,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3038 states. [2021-12-06 20:21:20,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3038 to 2112. [2021-12-06 20:21:20,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1538 states have (on average 1.3270481144343302) internal successors, (2041), 1561 states have internal predecessors, (2041), 416 states have call successors, (416), 152 states have call predecessors, (416), 157 states have return successors, (434), 418 states have call predecessors, (434), 414 states have call successors, (434) [2021-12-06 20:21:20,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 2891 transitions. [2021-12-06 20:21:20,557 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 2891 transitions. Word has length 196 [2021-12-06 20:21:20,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:20,557 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 2891 transitions. [2021-12-06 20:21:20,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 5 states have internal predecessors, (84), 2 states have call successors, (21), 7 states have call predecessors, (21), 3 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:21:20,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 2891 transitions. [2021-12-06 20:21:20,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2021-12-06 20:21:20,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:20,560 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:21:20,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:21:20,560 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:20,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:20,561 INFO L85 PathProgramCache]: Analyzing trace with hash -2095778693, now seen corresponding path program 1 times [2021-12-06 20:21:20,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:20,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737439128] [2021-12-06 20:21:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:20,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:20,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:20,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:20,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:21:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:21:20,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:20,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:21:20,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:21:20,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:20,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:20,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:21:20,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:20,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:20,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:21:20,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 20:21:20,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:20,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:20,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 20:21:20,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:21,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-06 20:21:21,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:21,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:21,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-06 20:21:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 20:21:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:21,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 20:21:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 238 trivial. 0 not checked. [2021-12-06 20:21:21,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:21,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737439128] [2021-12-06 20:21:21,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737439128] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:21:21,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489396137] [2021-12-06 20:21:21,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:21,098 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:21:21,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:21:21,099 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:21:21,100 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:21:21,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:21,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 2231 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 20:21:21,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:21:21,889 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2021-12-06 20:21:21,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:21:21,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [489396137] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:21:21,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:21:21,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 13 [2021-12-06 20:21:21,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685419737] [2021-12-06 20:21:21,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:21:21,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:21:21,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:21,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:21:21,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:21:21,891 INFO L87 Difference]: Start difference. First operand 2112 states and 2891 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 20:21:22,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:22,121 INFO L93 Difference]: Finished difference Result 4216 states and 5809 transitions. [2021-12-06 20:21:22,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:21:22,121 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 202 [2021-12-06 20:21:22,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:22,128 INFO L225 Difference]: With dead ends: 4216 [2021-12-06 20:21:22,129 INFO L226 Difference]: Without dead ends: 2117 [2021-12-06 20:21:22,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 251 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:21:22,135 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 6 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:22,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 3557 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:21:22,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2117 states. [2021-12-06 20:21:22,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2117 to 2117. [2021-12-06 20:21:22,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2117 states, 1543 states have (on average 1.3259883344134802) internal successors, (2046), 1566 states have internal predecessors, (2046), 416 states have call successors, (416), 152 states have call predecessors, (416), 157 states have return successors, (434), 418 states have call predecessors, (434), 414 states have call successors, (434) [2021-12-06 20:21:22,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2117 states to 2117 states and 2896 transitions. [2021-12-06 20:21:22,224 INFO L78 Accepts]: Start accepts. Automaton has 2117 states and 2896 transitions. Word has length 202 [2021-12-06 20:21:22,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:22,225 INFO L470 AbstractCegarLoop]: Abstraction has 2117 states and 2896 transitions. [2021-12-06 20:21:22,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (23), 2 states have call predecessors, (23), 4 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 20:21:22,225 INFO L276 IsEmpty]: Start isEmpty. Operand 2117 states and 2896 transitions. [2021-12-06 20:21:22,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-06 20:21:22,228 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:22,228 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:21:22,252 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:21:22,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:21:22,429 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:22,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:22,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1629733937, now seen corresponding path program 1 times [2021-12-06 20:21:22,429 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:22,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752317856] [2021-12-06 20:21:22,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:22,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:22,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:22,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:21:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:21:22,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:22,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:22,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:21:22,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:22,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:22,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:21:22,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:22,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:22,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:21:22,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:22,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:21:22,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 20:21:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:22,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 20:21:22,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:23,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2021-12-06 20:21:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:23,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:23,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:23,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:23,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-06 20:21:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:23,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 20:21:23,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 20:21:23,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-12-06 20:21:23,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:23,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752317856] [2021-12-06 20:21:23,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752317856] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:21:23,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1302203934] [2021-12-06 20:21:23,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:23,059 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:21:23,059 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:21:23,060 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:21:23,061 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:21:23,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:23,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 2261 conjuncts, 16 conjunts are in the unsatisfiable core [2021-12-06 20:21:23,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:21:24,063 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 32 proven. 3 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-12-06 20:21:24,063 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:21:24,985 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2021-12-06 20:21:24,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1302203934] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:21:24,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:21:24,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 19 [2021-12-06 20:21:24,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814001966] [2021-12-06 20:21:24,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:21:24,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 20:21:24,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:24,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 20:21:24,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:21:24,987 INFO L87 Difference]: Start difference. First operand 2117 states and 2896 transitions. Second operand has 19 states, 17 states have (on average 7.823529411764706) internal successors, (133), 14 states have internal predecessors, (133), 4 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:21:29,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:34,127 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:34,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:34,707 INFO L93 Difference]: Finished difference Result 4735 states and 6580 transitions. [2021-12-06 20:21:34,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:21:34,708 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 7.823529411764706) internal successors, (133), 14 states have internal predecessors, (133), 4 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) Word has length 204 [2021-12-06 20:21:34,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:34,717 INFO L225 Difference]: With dead ends: 4735 [2021-12-06 20:21:34,717 INFO L226 Difference]: Without dead ends: 2631 [2021-12-06 20:21:34,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 482 GetRequests, 450 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=163, Invalid=767, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:21:34,724 INFO L933 BasicCegarLoop]: 663 mSDtfsCounter, 809 mSDsluCounter, 4734 mSDsCounter, 0 mSdLazyCounter, 1692 mSolverCounterSat, 679 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 832 SdHoareTripleChecker+Valid, 5397 SdHoareTripleChecker+Invalid, 2373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 679 IncrementalHoareTripleChecker+Valid, 1692 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:34,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [832 Valid, 5397 Invalid, 2373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [679 Valid, 1692 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2021-12-06 20:21:34,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2021-12-06 20:21:34,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2127. [2021-12-06 20:21:34,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2127 states, 1551 states have (on average 1.324306898774984) internal successors, (2054), 1574 states have internal predecessors, (2054), 417 states have call successors, (417), 153 states have call predecessors, (417), 158 states have return successors, (435), 419 states have call predecessors, (435), 415 states have call successors, (435) [2021-12-06 20:21:34,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2127 states to 2127 states and 2906 transitions. [2021-12-06 20:21:34,812 INFO L78 Accepts]: Start accepts. Automaton has 2127 states and 2906 transitions. Word has length 204 [2021-12-06 20:21:34,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:34,812 INFO L470 AbstractCegarLoop]: Abstraction has 2127 states and 2906 transitions. [2021-12-06 20:21:34,812 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 7.823529411764706) internal successors, (133), 14 states have internal predecessors, (133), 4 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:21:34,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2127 states and 2906 transitions. [2021-12-06 20:21:34,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-06 20:21:34,815 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:34,815 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:21:34,837 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:21:35,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:21:35,017 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:35,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:35,018 INFO L85 PathProgramCache]: Analyzing trace with hash 78816210, now seen corresponding path program 1 times [2021-12-06 20:21:35,019 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:35,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130196474] [2021-12-06 20:21:35,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:35,020 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:35,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:21:35,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:35,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:21:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:35,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:35,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:21:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:35,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:35,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:21:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:35,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:21:35,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:21:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 20:21:35,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:35,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 20:21:35,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 20:21:35,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:35,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:35,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-06 20:21:35,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 20:21:35,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 20:21:35,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:35,668 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-12-06 20:21:35,668 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:35,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130196474] [2021-12-06 20:21:35,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130196474] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:21:35,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598106731] [2021-12-06 20:21:35,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:35,669 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:21:35,669 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:21:35,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:21:35,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 20:21:36,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:36,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2305 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-06 20:21:36,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:21:36,556 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 41 proven. 3 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-12-06 20:21:36,557 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:21:37,455 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2021-12-06 20:21:37,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598106731] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:21:37,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:21:37,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 8, 8] total 21 [2021-12-06 20:21:37,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697137091] [2021-12-06 20:21:37,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:21:37,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 20:21:37,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:37,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 20:21:37,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2021-12-06 20:21:37,456 INFO L87 Difference]: Start difference. First operand 2127 states and 2906 transitions. Second operand has 21 states, 19 states have (on average 7.368421052631579) internal successors, (140), 16 states have internal predecessors, (140), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:21:42,740 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:44,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:50,460 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:52,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:21:53,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:21:53,203 INFO L93 Difference]: Finished difference Result 4748 states and 6592 transitions. [2021-12-06 20:21:53,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:21:53,204 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 7.368421052631579) internal successors, (140), 16 states have internal predecessors, (140), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 207 [2021-12-06 20:21:53,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:21:53,213 INFO L225 Difference]: With dead ends: 4748 [2021-12-06 20:21:53,213 INFO L226 Difference]: Without dead ends: 2636 [2021-12-06 20:21:53,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 456 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2021-12-06 20:21:53,221 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 537 mSDsluCounter, 6466 mSDsCounter, 0 mSdLazyCounter, 2299 mSolverCounterSat, 392 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 7154 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2299 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:21:53,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 7154 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2299 Invalid, 4 Unknown, 0 Unchecked, 15.0s Time] [2021-12-06 20:21:53,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2636 states. [2021-12-06 20:21:53,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2636 to 2132. [2021-12-06 20:21:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 1556 states have (on average 1.3232647814910026) internal successors, (2059), 1579 states have internal predecessors, (2059), 417 states have call successors, (417), 153 states have call predecessors, (417), 158 states have return successors, (435), 419 states have call predecessors, (435), 415 states have call successors, (435) [2021-12-06 20:21:53,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2911 transitions. [2021-12-06 20:21:53,308 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2911 transitions. Word has length 207 [2021-12-06 20:21:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:21:53,308 INFO L470 AbstractCegarLoop]: Abstraction has 2132 states and 2911 transitions. [2021-12-06 20:21:53,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 7.368421052631579) internal successors, (140), 16 states have internal predecessors, (140), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:21:53,309 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2911 transitions. [2021-12-06 20:21:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2021-12-06 20:21:53,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:21:53,312 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:21:53,334 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 20:21:53,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-06 20:21:53,512 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:21:53,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:21:53,513 INFO L85 PathProgramCache]: Analyzing trace with hash -503115684, now seen corresponding path program 2 times [2021-12-06 20:21:53,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:21:53,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500328279] [2021-12-06 20:21:53,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:21:53,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:21:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:21:53,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:53,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:53,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:21:53,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:53,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:53,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:21:53,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:53,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:21:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:53,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:53,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:21:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:53,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:21:53,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:21:53,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:53,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 20:21:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 20:21:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 20:21:54,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:21:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:21:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 20:21:54,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 20:21:54,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 20:21:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:21:54,192 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-12-06 20:21:54,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:21:54,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500328279] [2021-12-06 20:21:54,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500328279] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:21:54,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [705258501] [2021-12-06 20:21:54,193 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:21:54,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:21:54,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:21:54,194 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:21:54,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 20:21:55,027 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:21:55,027 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:21:55,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 2335 conjuncts, 23 conjunts are in the unsatisfiable core [2021-12-06 20:21:55,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:21:55,598 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 34 proven. 21 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-06 20:21:55,598 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:21:56,562 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2021-12-06 20:21:56,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [705258501] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:21:56,563 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:21:56,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 9] total 25 [2021-12-06 20:21:56,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042964830] [2021-12-06 20:21:56,563 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:21:56,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 20:21:56,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:21:56,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 20:21:56,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=520, Unknown=0, NotChecked=0, Total=600 [2021-12-06 20:21:56,565 INFO L87 Difference]: Start difference. First operand 2132 states and 2911 transitions. Second operand has 25 states, 23 states have (on average 6.086956521739131) internal successors, (140), 20 states have internal predecessors, (140), 4 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:22:01,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:07,318 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:08,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:08,084 INFO L93 Difference]: Finished difference Result 4758 states and 6602 transitions. [2021-12-06 20:22:08,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 20:22:08,085 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 6.086956521739131) internal successors, (140), 20 states have internal predecessors, (140), 4 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) Word has length 209 [2021-12-06 20:22:08,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:08,093 INFO L225 Difference]: With dead ends: 4758 [2021-12-06 20:22:08,093 INFO L226 Difference]: Without dead ends: 2641 [2021-12-06 20:22:08,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 456 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 281 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=210, Invalid=1196, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 20:22:08,100 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 552 mSDsluCounter, 6382 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 409 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 7062 SdHoareTripleChecker+Invalid, 2699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:08,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 7062 Invalid, 2699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 2288 Invalid, 2 Unknown, 0 Unchecked, 10.7s Time] [2021-12-06 20:22:08,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2021-12-06 20:22:08,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2137. [2021-12-06 20:22:08,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2137 states, 1561 states have (on average 1.32222934016656) internal successors, (2064), 1584 states have internal predecessors, (2064), 417 states have call successors, (417), 153 states have call predecessors, (417), 158 states have return successors, (435), 419 states have call predecessors, (435), 415 states have call successors, (435) [2021-12-06 20:22:08,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2137 states to 2137 states and 2916 transitions. [2021-12-06 20:22:08,203 INFO L78 Accepts]: Start accepts. Automaton has 2137 states and 2916 transitions. Word has length 209 [2021-12-06 20:22:08,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:08,203 INFO L470 AbstractCegarLoop]: Abstraction has 2137 states and 2916 transitions. [2021-12-06 20:22:08,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 6.086956521739131) internal successors, (140), 20 states have internal predecessors, (140), 4 states have call successors, (45), 7 states have call predecessors, (45), 7 states have return successors, (31), 5 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:22:08,203 INFO L276 IsEmpty]: Start isEmpty. Operand 2137 states and 2916 transitions. [2021-12-06 20:22:08,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-06 20:22:08,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:08,206 INFO L514 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:22:08,229 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-06 20:22:08,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-12-06 20:22:08,408 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:22:08,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:08,409 INFO L85 PathProgramCache]: Analyzing trace with hash -526511079, now seen corresponding path program 1 times [2021-12-06 20:22:08,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:08,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181007110] [2021-12-06 20:22:08,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:08,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:22:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:08,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:08,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:22:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:08,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:22:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:22:08,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:08,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:08,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:22:08,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:08,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:22:08,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:08,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:08,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:22:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:08,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 20:22:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 20:22:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 20:22:09,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:22:09,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 20:22:09,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2021-12-06 20:22:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-06 20:22:09,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,137 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 20:22:09,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:09,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181007110] [2021-12-06 20:22:09,137 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181007110] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:22:09,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645119318] [2021-12-06 20:22:09,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:09,137 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:22:09,137 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:22:09,138 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:22:09,139 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 20:22:09,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:09,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 20:22:09,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:22:10,280 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 57 proven. 10 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-06 20:22:10,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:22:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 20:22:11,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [645119318] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:22:11,283 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:22:11,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 10, 10] total 25 [2021-12-06 20:22:11,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891739124] [2021-12-06 20:22:11,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:22:11,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-06 20:22:11,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:11,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-06 20:22:11,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=522, Unknown=0, NotChecked=0, Total=600 [2021-12-06 20:22:11,284 INFO L87 Difference]: Start difference. First operand 2137 states and 2916 transitions. Second operand has 25 states, 23 states have (on average 6.217391304347826) internal successors, (143), 20 states have internal predecessors, (143), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:22:18,739 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:20,772 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:27,579 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:29,593 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:30,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:30,533 INFO L93 Difference]: Finished difference Result 4816 states and 6667 transitions. [2021-12-06 20:22:30,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 20:22:30,534 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 6.217391304347826) internal successors, (143), 20 states have internal predecessors, (143), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 210 [2021-12-06 20:22:30,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:30,543 INFO L225 Difference]: With dead ends: 4816 [2021-12-06 20:22:30,543 INFO L226 Difference]: Without dead ends: 2699 [2021-12-06 20:22:30,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 459 SyntacticMatches, 3 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 436 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=361, Invalid=1991, Unknown=0, NotChecked=0, Total=2352 [2021-12-06 20:22:30,551 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 542 mSDsluCounter, 9941 mSDsCounter, 0 mSdLazyCounter, 3499 mSolverCounterSat, 416 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 10620 SdHoareTripleChecker+Invalid, 3919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 3499 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:30,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 10620 Invalid, 3919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 3499 Invalid, 4 Unknown, 0 Unchecked, 17.5s Time] [2021-12-06 20:22:30,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2699 states. [2021-12-06 20:22:30,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2699 to 2195. [2021-12-06 20:22:30,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2195 states, 1613 states have (on average 1.3161810291382516) internal successors, (2123), 1636 states have internal predecessors, (2123), 417 states have call successors, (417), 159 states have call predecessors, (417), 164 states have return successors, (435), 419 states have call predecessors, (435), 415 states have call successors, (435) [2021-12-06 20:22:30,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 2975 transitions. [2021-12-06 20:22:30,657 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 2975 transitions. Word has length 210 [2021-12-06 20:22:30,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:30,658 INFO L470 AbstractCegarLoop]: Abstraction has 2195 states and 2975 transitions. [2021-12-06 20:22:30,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 6.217391304347826) internal successors, (143), 20 states have internal predecessors, (143), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:22:30,658 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 2975 transitions. [2021-12-06 20:22:30,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-12-06 20:22:30,661 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:30,661 INFO L514 BasicCegarLoop]: trace histogram [9, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:22:30,685 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 20:22:30,861 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 20:22:30,861 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:22:30,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:30,862 INFO L85 PathProgramCache]: Analyzing trace with hash 441591447, now seen corresponding path program 2 times [2021-12-06 20:22:30,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:30,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884837121] [2021-12-06 20:22:30,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:30,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:30,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:22:30,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:30,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:30,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:30,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:22:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:30,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:31,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:22:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:22:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:22:31,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:22:31,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:31,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:22:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 20:22:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:31,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-06 20:22:31,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 20:22:31,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:31,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:22:31,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 20:22:31,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-06 20:22:31,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-06 20:22:31,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:31,643 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 20:22:31,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:31,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884837121] [2021-12-06 20:22:31,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884837121] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:22:31,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1271155893] [2021-12-06 20:22:31,643 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:22:31,644 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:22:31,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:22:31,644 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:22:31,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 20:22:33,006 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:22:33,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:22:33,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 2366 conjuncts, 19 conjunts are in the unsatisfiable core [2021-12-06 20:22:33,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:22:33,689 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 62 proven. 15 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-06 20:22:33,689 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:22:35,015 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 20:22:35,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1271155893] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:22:35,016 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:22:35,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 11, 11] total 27 [2021-12-06 20:22:35,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060556437] [2021-12-06 20:22:35,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:22:35,017 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 20:22:35,017 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:35,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 20:22:35,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2021-12-06 20:22:35,017 INFO L87 Difference]: Start difference. First operand 2195 states and 2975 transitions. Second operand has 27 states, 25 states have (on average 5.8) internal successors, (145), 22 states have internal predecessors, (145), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:22:43,250 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:45,291 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:51,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:53,867 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:22:54,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:22:54,886 INFO L93 Difference]: Finished difference Result 4896 states and 6741 transitions. [2021-12-06 20:22:54,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 20:22:54,887 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.8) internal successors, (145), 22 states have internal predecessors, (145), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 211 [2021-12-06 20:22:54,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:22:54,895 INFO L225 Difference]: With dead ends: 4896 [2021-12-06 20:22:54,895 INFO L226 Difference]: Without dead ends: 2709 [2021-12-06 20:22:54,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 515 GetRequests, 460 SyntacticMatches, 3 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 534 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=419, Invalid=2443, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 20:22:54,902 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 548 mSDsluCounter, 8499 mSDsCounter, 0 mSdLazyCounter, 3191 mSolverCounterSat, 499 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 9180 SdHoareTripleChecker+Invalid, 3694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 3191 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:22:54,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 9180 Invalid, 3694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 3191 Invalid, 4 Unknown, 0 Unchecked, 17.6s Time] [2021-12-06 20:22:54,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2021-12-06 20:22:55,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 2205. [2021-12-06 20:22:55,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2205 states, 1623 states have (on average 1.3142329020332717) internal successors, (2133), 1646 states have internal predecessors, (2133), 417 states have call successors, (417), 159 states have call predecessors, (417), 164 states have return successors, (435), 419 states have call predecessors, (435), 415 states have call successors, (435) [2021-12-06 20:22:55,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2205 states to 2205 states and 2985 transitions. [2021-12-06 20:22:55,015 INFO L78 Accepts]: Start accepts. Automaton has 2205 states and 2985 transitions. Word has length 211 [2021-12-06 20:22:55,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:22:55,015 INFO L470 AbstractCegarLoop]: Abstraction has 2205 states and 2985 transitions. [2021-12-06 20:22:55,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.8) internal successors, (145), 22 states have internal predecessors, (145), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:22:55,015 INFO L276 IsEmpty]: Start isEmpty. Operand 2205 states and 2985 transitions. [2021-12-06 20:22:55,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-12-06 20:22:55,018 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:22:55,018 INFO L514 BasicCegarLoop]: trace histogram [10, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:22:55,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-12-06 20:22:55,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-06 20:22:55,219 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:22:55,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:22:55,219 INFO L85 PathProgramCache]: Analyzing trace with hash -197728359, now seen corresponding path program 2 times [2021-12-06 20:22:55,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:22:55,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26599337] [2021-12-06 20:22:55,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:22:55,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:22:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:22:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:55,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:22:55,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:55,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:55,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:22:55,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:55,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:22:55,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:55,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:22:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:55,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:22:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:55,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:22:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:22:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 20:22:55,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:55,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 20:22:55,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:56,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 20:22:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:22:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:22:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:56,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 20:22:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:56,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 20:22:56,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 20:22:56,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:22:56,130 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 20:22:56,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:22:56,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26599337] [2021-12-06 20:22:56,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26599337] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:22:56,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573612490] [2021-12-06 20:22:56,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:22:56,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:22:56,131 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:22:56,132 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:22:56,132 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-06 20:22:57,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:22:57,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:22:57,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 2332 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 20:22:57,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:22:58,088 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 67 proven. 21 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-06 20:22:58,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:22:58,305 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:22:58,306 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 36 [2021-12-06 20:22:58,322 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:22:58,322 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2021-12-06 20:22:59,727 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 20:22:59,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573612490] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:22:59,727 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:22:59,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 12, 14] total 31 [2021-12-06 20:22:59,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804612271] [2021-12-06 20:22:59,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:22:59,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-06 20:22:59,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:22:59,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-06 20:22:59,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=825, Unknown=0, NotChecked=0, Total=930 [2021-12-06 20:22:59,730 INFO L87 Difference]: Start difference. First operand 2205 states and 2985 transitions. Second operand has 31 states, 29 states have (on average 5.172413793103448) internal successors, (150), 26 states have internal predecessors, (150), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:23:08,379 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:10,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:12,456 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:19,879 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:21,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:23,926 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:25,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:23:25,096 INFO L93 Difference]: Finished difference Result 4934 states and 6791 transitions. [2021-12-06 20:23:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-06 20:23:25,097 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 5.172413793103448) internal successors, (150), 26 states have internal predecessors, (150), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) Word has length 212 [2021-12-06 20:23:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:23:25,105 INFO L225 Difference]: With dead ends: 4934 [2021-12-06 20:23:25,105 INFO L226 Difference]: Without dead ends: 2737 [2021-12-06 20:23:25,111 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 459 SyntacticMatches, 3 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=477, Invalid=3183, Unknown=0, NotChecked=0, Total=3660 [2021-12-06 20:23:25,112 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 608 mSDsluCounter, 10218 mSDsCounter, 0 mSdLazyCounter, 4038 mSolverCounterSat, 552 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 10890 SdHoareTripleChecker+Invalid, 4596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 552 IncrementalHoareTripleChecker+Valid, 4038 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:23:25,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [631 Valid, 10890 Invalid, 4596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [552 Valid, 4038 Invalid, 6 Unknown, 0 Unchecked, 22.9s Time] [2021-12-06 20:23:25,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2021-12-06 20:23:25,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2215. [2021-12-06 20:23:25,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2215 states, 1633 states have (on average 1.3123086344151869) internal successors, (2143), 1656 states have internal predecessors, (2143), 417 states have call successors, (417), 159 states have call predecessors, (417), 164 states have return successors, (435), 419 states have call predecessors, (435), 415 states have call successors, (435) [2021-12-06 20:23:25,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2215 states to 2215 states and 2995 transitions. [2021-12-06 20:23:25,234 INFO L78 Accepts]: Start accepts. Automaton has 2215 states and 2995 transitions. Word has length 212 [2021-12-06 20:23:25,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:23:25,234 INFO L470 AbstractCegarLoop]: Abstraction has 2215 states and 2995 transitions. [2021-12-06 20:23:25,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 5.172413793103448) internal successors, (150), 26 states have internal predecessors, (150), 4 states have call successors, (47), 7 states have call predecessors, (47), 6 states have return successors, (31), 4 states have call predecessors, (31), 4 states have call successors, (31) [2021-12-06 20:23:25,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2215 states and 2995 transitions. [2021-12-06 20:23:25,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-06 20:23:25,237 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:23:25,237 INFO L514 BasicCegarLoop]: trace histogram [11, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:23:25,261 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2021-12-06 20:23:25,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:23:25,438 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:23:25,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:23:25,438 INFO L85 PathProgramCache]: Analyzing trace with hash -202031498, now seen corresponding path program 3 times [2021-12-06 20:23:25,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:23:25,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622032260] [2021-12-06 20:23:25,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:23:25,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:23:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:23:25,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 20:23:25,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:23:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:25,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:23:25,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:25,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:23:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:25,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:25,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 20:23:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:25,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 20:23:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-06 20:23:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 20:23:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-06 20:23:26,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 20:23:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:23:26,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:23:26,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 20:23:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-06 20:23:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-06 20:23:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:23:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 20:23:26,340 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:23:26,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622032260] [2021-12-06 20:23:26,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622032260] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:23:26,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157297618] [2021-12-06 20:23:26,340 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:23:26,340 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:23:26,340 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:23:26,341 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:23:26,343 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-06 20:23:37,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2021-12-06 20:23:37,228 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:23:37,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2410 conjuncts, 117 conjunts are in the unsatisfiable core [2021-12-06 20:23:37,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:23:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 72 proven. 28 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-06 20:23:38,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:23:38,819 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:23:38,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 3 case distinctions, treesize of input 65 treesize of output 82 [2021-12-06 20:23:38,861 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-06 20:23:38,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 74 treesize of output 79 [2021-12-06 20:23:40,969 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2021-12-06 20:23:40,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157297618] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:23:40,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 20:23:40,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 14, 18] total 38 [2021-12-06 20:23:40,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18224565] [2021-12-06 20:23:40,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 20:23:40,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-12-06 20:23:40,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:23:40,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-12-06 20:23:40,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1276, Unknown=0, NotChecked=0, Total=1406 [2021-12-06 20:23:40,972 INFO L87 Difference]: Start difference. First operand 2215 states and 2995 transitions. Second operand has 38 states, 34 states have (on average 4.970588235294118) internal successors, (169), 32 states have internal predecessors, (169), 8 states have call successors, (56), 8 states have call predecessors, (56), 6 states have return successors, (38), 6 states have call predecessors, (38), 7 states have call successors, (38) [2021-12-06 20:23:51,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:53,873 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:55,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:57,932 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:23:59,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:24:08,662 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:24:10,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:24:12,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:24:14,785 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:24:16,819 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:24:18,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:18,293 INFO L93 Difference]: Finished difference Result 4954 states and 6811 transitions. [2021-12-06 20:24:18,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-06 20:24:18,294 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 34 states have (on average 4.970588235294118) internal successors, (169), 32 states have internal predecessors, (169), 8 states have call successors, (56), 8 states have call predecessors, (56), 6 states have return successors, (38), 6 states have call predecessors, (38), 7 states have call successors, (38) Word has length 214 [2021-12-06 20:24:18,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:18,301 INFO L225 Difference]: With dead ends: 4954 [2021-12-06 20:24:18,302 INFO L226 Difference]: Without dead ends: 2747 [2021-12-06 20:24:18,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 457 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 820 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=542, Invalid=4288, Unknown=0, NotChecked=0, Total=4830 [2021-12-06 20:24:18,308 INFO L933 BasicCegarLoop]: 681 mSDtfsCounter, 812 mSDsluCounter, 12837 mSDsCounter, 0 mSdLazyCounter, 5596 mSolverCounterSat, 539 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 13518 SdHoareTripleChecker+Invalid, 6145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 5596 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 34.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:18,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 13518 Invalid, 6145 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [539 Valid, 5596 Invalid, 10 Unknown, 0 Unchecked, 34.3s Time] [2021-12-06 20:24:18,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2747 states. [2021-12-06 20:24:18,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2747 to 2225. [2021-12-06 20:24:18,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2225 states, 1643 states have (on average 1.310407790626902) internal successors, (2153), 1666 states have internal predecessors, (2153), 417 states have call successors, (417), 159 states have call predecessors, (417), 164 states have return successors, (435), 419 states have call predecessors, (435), 415 states have call successors, (435) [2021-12-06 20:24:18,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2225 states to 2225 states and 3005 transitions. [2021-12-06 20:24:18,424 INFO L78 Accepts]: Start accepts. Automaton has 2225 states and 3005 transitions. Word has length 214 [2021-12-06 20:24:18,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:18,424 INFO L470 AbstractCegarLoop]: Abstraction has 2225 states and 3005 transitions. [2021-12-06 20:24:18,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 34 states have (on average 4.970588235294118) internal successors, (169), 32 states have internal predecessors, (169), 8 states have call successors, (56), 8 states have call predecessors, (56), 6 states have return successors, (38), 6 states have call predecessors, (38), 7 states have call successors, (38) [2021-12-06 20:24:18,424 INFO L276 IsEmpty]: Start isEmpty. Operand 2225 states and 3005 transitions. [2021-12-06 20:24:18,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-06 20:24:18,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:18,427 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:24:18,437 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-06 20:24:18,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:24:18,628 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:18,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:18,628 INFO L85 PathProgramCache]: Analyzing trace with hash -838850821, now seen corresponding path program 3 times [2021-12-06 20:24:18,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:24:18,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [681688243] [2021-12-06 20:24:18,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:18,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:24:18,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:24:18,927 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-06 20:24:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:24:19,257 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-06 20:24:19,257 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-06 20:24:19,258 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-12-06 20:24:19,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 20:24:19,261 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:24:19,264 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-06 20:24:19,298 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-12-06 20:24:19,299 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) [2021-12-06 20:24:19,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 08:24:19 BoogieIcfgContainer [2021-12-06 20:24:19,415 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-06 20:24:19,416 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-06 20:24:19,416 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-06 20:24:19,416 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-06 20:24:19,417 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:18:34" (3/4) ... [2021-12-06 20:24:19,419 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-06 20:24:19,420 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-06 20:24:19,420 INFO L158 Benchmark]: Toolchain (without parser) took 358353.06ms. Allocated memory was 117.4MB in the beginning and 446.7MB in the end (delta: 329.3MB). Free memory was 69.1MB in the beginning and 338.9MB in the end (delta: -269.8MB). Peak memory consumption was 60.9MB. Max. memory is 16.1GB. [2021-12-06 20:24:19,420 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:24:19,420 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1397.58ms. Allocated memory was 117.4MB in the beginning and 169.9MB in the end (delta: 52.4MB). Free memory was 68.8MB in the beginning and 81.4MB in the end (delta: -12.6MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. [2021-12-06 20:24:19,421 INFO L158 Benchmark]: Boogie Procedure Inliner took 146.61ms. Allocated memory is still 169.9MB. Free memory was 81.4MB in the beginning and 104.0MB in the end (delta: -22.6MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. [2021-12-06 20:24:19,421 INFO L158 Benchmark]: Boogie Preprocessor took 102.07ms. Allocated memory is still 169.9MB. Free memory was 104.0MB in the beginning and 84.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2021-12-06 20:24:19,421 INFO L158 Benchmark]: RCFGBuilder took 11581.57ms. Allocated memory was 169.9MB in the beginning and 446.7MB in the end (delta: 276.8MB). Free memory was 84.8MB in the beginning and 338.1MB in the end (delta: -253.3MB). Peak memory consumption was 258.4MB. Max. memory is 16.1GB. [2021-12-06 20:24:19,421 INFO L158 Benchmark]: TraceAbstraction took 345116.33ms. Allocated memory is still 446.7MB. Free memory was 337.0MB in the beginning and 338.9MB in the end (delta: -1.9MB). Peak memory consumption was 244.5MB. Max. memory is 16.1GB. [2021-12-06 20:24:19,422 INFO L158 Benchmark]: Witness Printer took 3.68ms. Allocated memory is still 446.7MB. Free memory is still 338.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-06 20:24:19,423 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 117.4MB. Free memory is still 96.1MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1397.58ms. Allocated memory was 117.4MB in the beginning and 169.9MB in the end (delta: 52.4MB). Free memory was 68.8MB in the beginning and 81.4MB in the end (delta: -12.6MB). Peak memory consumption was 56.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 146.61ms. Allocated memory is still 169.9MB. Free memory was 81.4MB in the beginning and 104.0MB in the end (delta: -22.6MB). Peak memory consumption was 21.8MB. Max. memory is 16.1GB. * Boogie Preprocessor took 102.07ms. Allocated memory is still 169.9MB. Free memory was 104.0MB in the beginning and 84.8MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * RCFGBuilder took 11581.57ms. Allocated memory was 169.9MB in the beginning and 446.7MB in the end (delta: 276.8MB). Free memory was 84.8MB in the beginning and 338.1MB in the end (delta: -253.3MB). Peak memory consumption was 258.4MB. Max. memory is 16.1GB. * TraceAbstraction took 345116.33ms. Allocated memory is still 446.7MB. Free memory was 337.0MB in the beginning and 338.9MB in the end (delta: -1.9MB). Peak memory consumption was 244.5MB. Max. memory is 16.1GB. * Witness Printer took 3.68ms. Allocated memory is still 446.7MB. Free memory is still 338.9MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification free ensures #res.base == #ptr.base && #res.offset == #ptr.offset; is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation The program execution was not completely translated back. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 7526]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of large string literal at line 6952, overapproximation of bitwiseAnd at line 6045. Possible FailurePath: [L6261] int ldv_state_variable_3 ; [L6262] int LDV_IN_INTERRUPT = 1; [L6263] int ldv_state_variable_2 ; [L6264] struct atm_vcc *atmtcp_c_dev_ops_group0 ; [L6265] int ref_cnt ; [L6266] struct atm_vcc *atmtcp_v_dev_ops_group1 ; [L6267] struct atm_dev *atmtcp_v_dev_ops_group0 ; [L6268] int ldv_state_variable_1 ; [L6269] int ldv_state_variable_0 ; [L6942-L6944] static struct atmdev_ops atmtcp_v_dev_ops = {& atmtcp_v_dev_close, & atmtcp_v_open, & atmtcp_v_close, & atmtcp_v_ioctl, 0, 0, 0, & atmtcp_v_send, 0, 0, 0, 0, & atmtcp_v_proc, & __this_module}; [L6945-L6946] static struct atmdev_ops atmtcp_c_dev_ops = {0, 0, & atmtcp_c_close, 0, 0, 0, 0, & atmtcp_c_send, 0, 0, 0, 0, 0, 0}; [L6947-L7055] static struct atm_dev atmtcp_control_dev = {(struct atmdev_ops const *)(& atmtcp_c_dev_ops), 0, "atmtcp", 999, 0, 0, 0UL, {0, 0}, {0, 0}, {(unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0}, {(signed char)0, (signed char)0}, {{{0}, {0}, {0}, {0}, {0}}, {{0}, {0}, {0}, {0}, {0}}, {{0}, {0}, {0}, {0}, {0}}}, (char)0, 0, {0}, {{{{{0}}, 3735899821U, 4294967295U, (void *)-1, {0, {0, 0}, "atmtcp_control_dev.lock", 0, 0UL}}}}, 0, 0, {0, 0, {0, {0, 0}, 0, 0, 0, 0, {{0}}, {{{0L}, {0, 0}, 0, {0, {0, 0}, 0, 0, 0UL}}, {{0, 0}, 0UL, 0, 0UL, 0U, 0, 0, 0, {(char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0}, {0, {0, 0}, 0, 0, 0UL}}, 0, 0}, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0}, 0, 0, {{0}, {{{{{0}}, 0U, 0U, 0, {0, {0, 0}, 0, 0, 0UL}}}}, {0, 0}, 0, 0, {0, {0, 0}, 0, 0, 0UL}}, 0, 0, 0, 0, {{0}, (unsigned char)0, (unsigned char)0, (_Bool)0, (_Bool)0, (_Bool)0, (_Bool)0, (_Bool)0, (_Bool)0, (_Bool)0, {{{{{0}}, 0U, 0U, 0, {0, {0, 0}, 0, 0, 0UL}}}}, {0, 0}, {0U, {{{{{{0}}, 0U, 0U, 0, {0, {0, 0}, 0, 0, 0UL}}}}, {0, 0}}}, 0, (_Bool)0, (_Bool)0, {{0, 0}, 0UL, 0, 0UL, 0U, 0, 0, 0, {(char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0, (char)0}, {0, {0, 0}, 0, 0, 0UL}}, 0UL, {{0L}, {0, 0}, 0, {0, {0, 0}, 0, 0, 0UL}}, {{{{{{0}}, 0U, 0U, 0, {0, {0, 0}, 0, 0, 0UL}}}}, {0, 0}}, 0, {0}, {0}, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, (unsigned char)0, 0, 0, 0, 0, 0UL, 0UL, 0UL, 0UL, 0, 0, 0}, 0, 0, 0, 0, 0ULL, 0UL, 0, {0, 0}, 0, 0, {0, 0}, 0, 0, 0U, 0U, {{{{{0}}, 0U, 0U, 0, {0, {0, 0}, 0, 0, 0UL}}}}, {0, 0}, {0, {0, 0}, {{0}}}, 0, 0, 0, 0, (_Bool)0, (_Bool)0}, {0, 0}}; [L7212] static struct atm_ioctl atmtcp_ioctl_ops = {& __this_module, & atmtcp_ioctl, {0, 0}}; [L7228] int ldv_retval_0 ; [L7229] int ldv_retval_1 ; [L7565] int ldv_module_refcounter = 1; VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L7255] unsigned long ldvarg1 ; [L7256] struct socket *ldvarg0 ; [L7257] void *tmp ; [L7258] unsigned int ldvarg2 ; [L7259] loff_t *ldvarg7 ; [L7260] void *tmp___0 ; [L7261] void *ldvarg4 ; [L7262] void *tmp___1 ; [L7263] struct sk_buff *ldvarg3 ; [L7264] void *tmp___2 ; [L7265] unsigned int ldvarg5 ; [L7266] char *ldvarg6 ; [L7267] void *tmp___3 ; [L7268] struct sk_buff *ldvarg8 ; [L7269] void *tmp___4 ; [L7270] int tmp___5 ; [L7271] int tmp___6 ; [L7272] int tmp___7 ; [L7273] int tmp___8 ; [L7274] int tmp___9 ; VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg1={36893488147419103237:0}, ldvarg5={36893488147419103236:0}, ref_cnt=0] [L7276] CALL, EXPR ldv_init_zalloc(48UL) VAL [\old(size)=48, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6215] void *p ; [L6216] void *tmp ; [L6218] EXPR, FCALL calloc(1UL, size) VAL [\old(size)=48, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-36893488147419103231:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, size=48] [L6218] tmp = calloc(1UL, size) [L6219] p = tmp VAL [\old(size)=48, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-36893488147419103231:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-36893488147419103231:0}, ref_cnt=0, size=48, tmp={-36893488147419103231:0}] [L6220] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6177] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, cond=1, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6220] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(size)=48, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-36893488147419103231:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-36893488147419103231:0}, ref_cnt=0, size=48, tmp={-36893488147419103231:0}] [L6221] return (p); VAL [\old(size)=48, \result={-36893488147419103231:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-36893488147419103231:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-36893488147419103231:0}, ref_cnt=0, size=48, tmp={-36893488147419103231:0}] [L7276] RET, EXPR ldv_init_zalloc(48UL) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_init_zalloc(48UL)={-36893488147419103231:0}, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg1={36893488147419103237:0}, ldvarg5={36893488147419103236:0}, ref_cnt=0] [L7276] tmp = ldv_init_zalloc(48UL) [L7277] ldvarg0 = (struct socket *)tmp VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg5={36893488147419103236:0}, ref_cnt=0, tmp={-36893488147419103231:0}] [L7278] CALL, EXPR ldv_init_zalloc(8UL) VAL [\old(size)=8, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6215] void *p ; [L6216] void *tmp ; [L6218] EXPR, FCALL calloc(1UL, size) VAL [\old(size)=8, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-36893488147419103233:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, size=8] [L6218] tmp = calloc(1UL, size) [L6219] p = tmp VAL [\old(size)=8, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-36893488147419103233:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-36893488147419103233:0}, ref_cnt=0, size=8, tmp={-36893488147419103233:0}] [L6220] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6177] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, cond=1, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6220] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(size)=8, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-36893488147419103233:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-36893488147419103233:0}, ref_cnt=0, size=8, tmp={-36893488147419103233:0}] [L6221] return (p); VAL [\old(size)=8, \result={-36893488147419103233:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-36893488147419103233:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-36893488147419103233:0}, ref_cnt=0, size=8, tmp={-36893488147419103233:0}] [L7278] RET, EXPR ldv_init_zalloc(8UL) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_init_zalloc(8UL)={-36893488147419103233:0}, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg5={36893488147419103236:0}, ref_cnt=0, tmp={-36893488147419103231:0}] [L7278] tmp___0 = ldv_init_zalloc(8UL) [L7279] ldvarg7 = (loff_t *)tmp___0 VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg5={36893488147419103236:0}, ldvarg7={-36893488147419103233:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}] [L7280] CALL, EXPR ldv_init_zalloc(1UL) VAL [\old(size)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6215] void *p ; [L6216] void *tmp ; [L6218] EXPR, FCALL calloc(1UL, size) VAL [\old(size)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={18446744073709551617:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, size=1] [L6218] tmp = calloc(1UL, size) [L6219] p = tmp VAL [\old(size)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={18446744073709551617:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={18446744073709551617:0}, ref_cnt=0, size=1, tmp={18446744073709551617:0}] [L6220] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6177] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, cond=1, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6220] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(size)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={18446744073709551617:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={18446744073709551617:0}, ref_cnt=0, size=1, tmp={18446744073709551617:0}] [L6221] return (p); VAL [\old(size)=1, \result={18446744073709551617:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={18446744073709551617:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={18446744073709551617:0}, ref_cnt=0, size=1, tmp={18446744073709551617:0}] [L7280] RET, EXPR ldv_init_zalloc(1UL) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_init_zalloc(1UL)={18446744073709551617:0}, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg5={36893488147419103236:0}, ldvarg7={-36893488147419103233:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}] [L7280] tmp___1 = ldv_init_zalloc(1UL) [L7281] ldvarg4 = tmp___1 VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg7={-36893488147419103233:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}] [L7282] CALL, EXPR ldv_init_zalloc(232UL) VAL [\old(size)=232, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6215] void *p ; [L6216] void *tmp ; [L6218] EXPR, FCALL calloc(1UL, size) VAL [\old(size)=232, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-55340232221128654849:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, size=232] [L6218] tmp = calloc(1UL, size) [L6219] p = tmp VAL [\old(size)=232, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-55340232221128654849:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-55340232221128654849:0}, ref_cnt=0, size=232, tmp={-55340232221128654849:0}] [L6220] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6177] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, cond=1, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6220] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(size)=232, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-55340232221128654849:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-55340232221128654849:0}, ref_cnt=0, size=232, tmp={-55340232221128654849:0}] [L6221] return (p); VAL [\old(size)=232, \result={-55340232221128654849:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-55340232221128654849:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-55340232221128654849:0}, ref_cnt=0, size=232, tmp={-55340232221128654849:0}] [L7282] RET, EXPR ldv_init_zalloc(232UL) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_init_zalloc(232UL)={-55340232221128654849:0}, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg7={-36893488147419103233:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}] [L7282] tmp___2 = ldv_init_zalloc(232UL) [L7283] ldvarg3 = (struct sk_buff *)tmp___2 VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg7={-36893488147419103233:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}] [L7284] CALL, EXPR ldv_init_zalloc(1UL) VAL [\old(size)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6215] void *p ; [L6216] void *tmp ; [L6218] EXPR, FCALL calloc(1UL, size) VAL [\old(size)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={36893488147419103233:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, size=1] [L6218] tmp = calloc(1UL, size) [L6219] p = tmp VAL [\old(size)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={36893488147419103233:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={36893488147419103233:0}, ref_cnt=0, size=1, tmp={36893488147419103233:0}] [L6220] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6177] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, cond=1, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6220] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(size)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={36893488147419103233:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={36893488147419103233:0}, ref_cnt=0, size=1, tmp={36893488147419103233:0}] [L6221] return (p); VAL [\old(size)=1, \result={36893488147419103233:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={36893488147419103233:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={36893488147419103233:0}, ref_cnt=0, size=1, tmp={36893488147419103233:0}] [L7284] RET, EXPR ldv_init_zalloc(1UL) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_init_zalloc(1UL)={36893488147419103233:0}, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg7={-36893488147419103233:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}] [L7284] tmp___3 = ldv_init_zalloc(1UL) [L7285] ldvarg6 = (char *)tmp___3 VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}] [L7286] CALL, EXPR ldv_init_zalloc(232UL) VAL [\old(size)=232, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6215] void *p ; [L6216] void *tmp ; [L6218] EXPR, FCALL calloc(1UL, size) VAL [\old(size)=232, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-92233720368547758079:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, size=232] [L6218] tmp = calloc(1UL, size) [L6219] p = tmp VAL [\old(size)=232, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-92233720368547758079:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-92233720368547758079:0}, ref_cnt=0, size=232, tmp={-92233720368547758079:0}] [L6220] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6177] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, cond=1, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6220] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(size)=232, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-92233720368547758079:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-92233720368547758079:0}, ref_cnt=0, size=232, tmp={-92233720368547758079:0}] [L6221] return (p); VAL [\old(size)=232, \result={-92233720368547758079:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, calloc(1UL, size)={-92233720368547758079:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-92233720368547758079:0}, ref_cnt=0, size=232, tmp={-92233720368547758079:0}] [L7286] RET, EXPR ldv_init_zalloc(232UL) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_init_zalloc(232UL)={-92233720368547758079:0}, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}] [L7286] tmp___4 = ldv_init_zalloc(232UL) [L7287] ldvarg8 = (struct sk_buff *)tmp___4 [L7288] FCALL ldv_initialize() [L7289] CALL ldv_memset((void *)(& ldvarg1), 0, 8UL) VAL [\old(c)=0, \old(n)=8, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, s={36893488147419103237:0}] [L6226] void *tmp ; VAL [\old(c)=0, \old(n)=8, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, c=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, n=8, ref_cnt=0, s={36893488147419103237:0}, s={36893488147419103237:0}] [L6228] EXPR, FCALL memset(s, c, n) VAL [\old(c)=0, \old(n)=8, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, c=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, memset(s, c, n)={36893488147419103237:0}, n=8, ref_cnt=0, s={36893488147419103237:0}, s={36893488147419103237:0}] [L6228] tmp = memset(s, c, n) [L6229] return (tmp); VAL [\old(c)=0, \old(n)=8, \result={36893488147419103237:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, c=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, n=8, ref_cnt=0, s={36893488147419103237:0}, s={36893488147419103237:0}, tmp={36893488147419103237:0}] [L7289] RET ldv_memset((void *)(& ldvarg1), 0, 8UL) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_memset((void *)(& ldvarg1), 0, 8UL)={36893488147419103237:0}, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ldvarg8={-92233720368547758079:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}, tmp___4={-92233720368547758079:0}] [L7290] ldvarg2 = __VERIFIER_nondet_uint () [L7291] CALL ldv_memset((void *)(& ldvarg5), 0, 4UL) VAL [\old(c)=0, \old(n)=4, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, s={36893488147419103236:0}] [L6226] void *tmp ; VAL [\old(c)=0, \old(n)=4, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, c=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, n=4, ref_cnt=0, s={36893488147419103236:0}, s={36893488147419103236:0}] [L6228] EXPR, FCALL memset(s, c, n) VAL [\old(c)=0, \old(n)=4, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, c=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, memset(s, c, n)={36893488147419103236:0}, n=4, ref_cnt=0, s={36893488147419103236:0}, s={36893488147419103236:0}] [L6228] tmp = memset(s, c, n) [L6229] return (tmp); VAL [\old(c)=0, \old(n)=4, \result={36893488147419103236:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, c=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, n=4, ref_cnt=0, s={36893488147419103236:0}, s={36893488147419103236:0}, tmp={36893488147419103236:0}] [L7291] RET ldv_memset((void *)(& ldvarg5), 0, 4UL) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_memset((void *)(& ldvarg5), 0, 4UL)={36893488147419103236:0}, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=0, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg2=24960, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ldvarg8={-92233720368547758079:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}, tmp___4={-92233720368547758079:0}] [L7292] ldv_state_variable_1 = 0 [L7293] ref_cnt = 0 [L7294] ldv_state_variable_0 = 1 [L7295] ldv_state_variable_3 = 0 [L7296] ldv_state_variable_2 = 0 VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg2=24960, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ldvarg8={-92233720368547758079:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}, tmp___4={-92233720368547758079:0}] [L7298] tmp___5 = __VERIFIER_nondet_int() [L7300] case 0: [L7318] case 1: VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg2=24960, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ldvarg8={-92233720368547758079:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}, tmp___4={-92233720368547758079:0}, tmp___5=1] [L7319] COND TRUE ldv_state_variable_0 != 0 [L7320] tmp___7 = __VERIFIER_nondet_int() [L7322] case 0: [L7330] case 1: VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg2=24960, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ldvarg8={-92233720368547758079:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}, tmp___4={-92233720368547758079:0}, tmp___5=1, tmp___7=1] [L7331] COND TRUE ldv_state_variable_0 == 1 [L7332] CALL, EXPR atmtcp_init() [L7216] FCALL register_atm_ioctl(& atmtcp_ioctl_ops) [L7217] return (0); VAL [\result=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=1, ldv_state_variable_1=0, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L7332] RET, EXPR atmtcp_init() [L7332] ldv_retval_0 = atmtcp_init() [L7333] COND TRUE ldv_retval_0 == 0 [L7334] ldv_state_variable_0 = 3 [L7335] ldv_state_variable_1 = 1 VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg2=24960, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ldvarg8={-92233720368547758079:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}, tmp___4={-92233720368547758079:0}, tmp___5=1, tmp___7=1] [L7338] COND FALSE !(ldv_retval_0 != 0) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg2=24960, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ldvarg8={-92233720368547758079:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}, tmp___4={-92233720368547758079:0}, tmp___5=1, tmp___7=1] [L7298] tmp___5 = __VERIFIER_nondet_int() [L7300] case 0: VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg2=24960, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ldvarg8={-92233720368547758079:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}, tmp___4={-92233720368547758079:0}, tmp___5=0, tmp___7=1] [L7301] COND TRUE ldv_state_variable_1 != 0 [L7302] tmp___6 = __VERIFIER_nondet_int() [L7304] case 0: VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ldvarg0={-36893488147419103231:0}, ldvarg1={36893488147419103237:0}, ldvarg2=24960, ldvarg3={-55340232221128654849:0}, ldvarg4={18446744073709551617:0}, ldvarg5={36893488147419103236:0}, ldvarg6={36893488147419103233:0}, ldvarg7={-36893488147419103233:0}, ldvarg8={-92233720368547758079:0}, ref_cnt=0, tmp={-36893488147419103231:0}, tmp___0={-36893488147419103233:0}, tmp___1={18446744073709551617:0}, tmp___2={-55340232221128654849:0}, tmp___3={36893488147419103233:0}, tmp___4={-92233720368547758079:0}, tmp___5=0, tmp___6=0, tmp___7=1] [L7305] COND TRUE ldv_state_variable_1 == 1 [L7306] EXPR \read(ldvarg1) [L7306] CALL atmtcp_ioctl(ldvarg0, ldvarg2, ldvarg1) [L7169] int err ; [L7170] struct atm_vcc *vcc ; [L7171] struct atm_vcc *tmp ; [L7172] bool tmp___0 ; [L7173] int tmp___1 ; [L7175] err = 0 [L7176] CALL, EXPR ATM_SD(sock) [L6342] struct atm_vcc *tmp ; [L6344] EXPR sock->sk VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, sock={-36893488147419103231:0}, sock={-36893488147419103231:0}, sock->sk={36893488147419103243:36893488147419103238}] [L6344] CALL, EXPR atm_sk(sock->sk) VAL [__this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, sk={36893488147419103243:36893488147419103238}] [L6337] return ((struct atm_vcc *)sk); VAL [\result={36893488147419103243:36893488147419103238}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, sk={36893488147419103243:36893488147419103238}, sk={36893488147419103243:36893488147419103238}] [L6344] RET, EXPR atm_sk(sock->sk) VAL [__this_module={21:-20}, atm_sk(sock->sk)={36893488147419103243:36893488147419103238}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, sock={-36893488147419103231:0}, sock={-36893488147419103231:0}, sock->sk={36893488147419103243:36893488147419103238}] [L6344] tmp = atm_sk(sock->sk) [L6345] return (tmp); VAL [\result={36893488147419103243:36893488147419103238}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, sock={-36893488147419103231:0}, sock={-36893488147419103231:0}, tmp={36893488147419103243:36893488147419103238}] [L7176] RET, EXPR ATM_SD(sock) [L7176] tmp = ATM_SD(sock) [L7177] vcc = tmp VAL [\old(arg)=0, \old(cmd)=24960, __this_module={21:-20}, arg=0, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, cmd=24960, err=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, sock={-36893488147419103231:0}, sock={-36893488147419103231:0}, tmp={36893488147419103243:36893488147419103238}, vcc={36893488147419103243:36893488147419103238}] [L7178] COND FALSE !((cmd != 24960U && cmd != 24974U) && cmd != 24975U) [L7182] CALL, EXPR capable(12) [L7680] return __VERIFIER_nondet_bool(); [L7182] RET, EXPR capable(12) [L7182] tmp___0 = capable(12) [L7183] COND TRUE \read(tmp___0) [L7184] tmp___1 = 0 VAL [\old(arg)=0, \old(cmd)=24960, __this_module={21:-20}, arg=0, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, cmd=24960, err=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, sock={-36893488147419103231:0}, sock={-36893488147419103231:0}, tmp={36893488147419103243:36893488147419103238}, tmp___0=1, tmp___1=0, vcc={36893488147419103243:36893488147419103238}] [L7188] COND FALSE !(\read(tmp___1)) [L7193] case 24960U: [L7194] CALL atmtcp_attach(vcc, (int )arg) [L7089] struct atm_dev *dev ; [L7090] int error ; [L7091] struct sock *tmp ; [L7093] dev = (struct atm_dev *)0 VAL [\old(itf)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev={36893488147419103235:0}, itf=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, vcc={36893488147419103243:36893488147419103238}, vcc={36893488147419103243:36893488147419103238}] [L7094] COND TRUE itf != -1 VAL [\old(itf)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev={36893488147419103235:0}, itf=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, vcc={36893488147419103243:36893488147419103238}, vcc={36893488147419103243:36893488147419103238}] [L7095] CALL, EXPR atm_dev_lookup(itf) VAL [\old(arg0)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L7669] CALL, EXPR ldv_malloc(sizeof(struct atm_dev)) VAL [\old(size)=1598, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6181] void *p ; [L6182] void *tmp ; [L6183] int tmp___0 ; [L6185] tmp___0 = __VERIFIER_nondet_int() [L6186] COND FALSE !(tmp___0 != 0) [L6189] tmp = malloc(size) [L6190] p = tmp VAL [\old(size)=1598, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-18446744073709551615:0}, ref_cnt=0, size=1598, tmp={-18446744073709551615:0}, tmp___0=0] [L6191] CALL assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6177] COND FALSE !(!cond) VAL [\old(cond)=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, cond=1, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6191] RET assume_abort_if_not((unsigned long )p != (unsigned long )((void *)0)) VAL [\old(size)=1598, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-18446744073709551615:0}, ref_cnt=0, size=1598, tmp={-18446744073709551615:0}, tmp___0=0] [L6192] return (p); VAL [\old(size)=1598, \result={-18446744073709551615:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-18446744073709551615:0}, ref_cnt=0, size=1598, tmp={-18446744073709551615:0}, tmp___0=0] [L7669] RET, EXPR ldv_malloc(sizeof(struct atm_dev)) VAL [\old(arg0)=0, __this_module={21:-20}, arg0=0, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_malloc(sizeof(struct atm_dev))={-18446744073709551615:0}, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L7669] return ldv_malloc(sizeof(struct atm_dev)); [L7095] RET, EXPR atm_dev_lookup(itf) VAL [\old(itf)=0, __this_module={21:-20}, atm_dev_lookup(itf)={-18446744073709551615:0}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev={36893488147419103235:0}, itf=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, vcc={36893488147419103243:36893488147419103238}, vcc={36893488147419103243:36893488147419103238}] [L7095] dev = atm_dev_lookup(itf) [L7098] EXPR \read(*dev) VAL [\old(itf)=0, \read(*dev)={-18446744073709551615:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev={36893488147419103235:0}, itf=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, vcc={36893488147419103243:36893488147419103238}, vcc={36893488147419103243:36893488147419103238}] [L7098] COND TRUE (unsigned long )dev != (unsigned long )((struct atm_dev *)0) [L7099] EXPR \read(*dev) [L7099] EXPR dev->ops VAL [\old(itf)=0, \read(*dev)={-18446744073709551615:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev={36893488147419103235:0}, dev->ops={20:-3}, itf=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, vcc={36893488147419103243:36893488147419103238}, vcc={36893488147419103243:36893488147419103238}] [L7099] COND TRUE (unsigned long )dev->ops != (unsigned long )((struct atmdev_ops const *)(& atmtcp_v_dev_ops)) [L7100] EXPR \read(*dev) VAL [\old(itf)=0, \read(*dev)={-18446744073709551615:0}, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev={36893488147419103235:0}, itf=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, vcc={36893488147419103243:36893488147419103238}, vcc={36893488147419103243:36893488147419103238}] [L7100] CALL atm_dev_put(dev) VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6377] int tmp ; [L6378] long tmp___0 ; [L6379] int tmp___1 ; [L6381] CALL, EXPR atomic_dec_and_test(& dev->refcnt) [L6126] char c ; [L6130] return ((int )((signed char )c) != 0); VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, \result=1, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, c=36893488147419103241, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, v={-18446744073709551615:157}, v={-18446744073709551615:157}] [L6381] RET, EXPR atomic_dec_and_test(& dev->refcnt) [L6381] tmp___1 = atomic_dec_and_test(& dev->refcnt) [L6382] COND TRUE tmp___1 != 0 [L6383] CALL, EXPR constant_test_bit(0L, (unsigned long const volatile *)(& dev->flags)) [L6045] EXPR addr + (unsigned long )(nr >> 6) [L6045] return ((int )((unsigned long )*(addr + (unsigned long )(nr >> 6)) >> ((int )nr & 63)) & 1); [L6383] RET, EXPR constant_test_bit(0L, (unsigned long const volatile *)(& dev->flags)) [L6383] tmp = constant_test_bit(0L, (unsigned long const volatile *)(& dev->flags)) [L6384] CALL, EXPR ldv__builtin_expect(tmp == 0, 0L) VAL [\old(c)=0, \old(exp)=0, \old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6258] return (exp); VAL [\old(c)=0, \old(exp)=0, \old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, \result=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, c=0, exp=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6384] RET, EXPR ldv__builtin_expect(tmp == 0, 0L) VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev={-18446744073709551615:0}, dev={-18446744073709551615:0}, ldv__builtin_expect(tmp == 0, 0L)=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, tmp=1, tmp___1=1] [L6384] tmp___0 = ldv__builtin_expect(tmp == 0, 0L) [L6385] COND FALSE !(tmp___0 != 0L) [L6392] EXPR dev->ops [L6392] EXPR (dev->ops)->dev_close VAL [(dev->ops)->dev_close={-1:7}, \old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev={-18446744073709551615:0}, dev={-18446744073709551615:0}, dev->ops={20:-3}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, tmp=1, tmp___0=0, tmp___1=1] [L6392] COND TRUE (unsigned long )(dev->ops)->dev_close != (unsigned long )((void (* )(struct atm_dev * ))0) [L6393] EXPR dev->ops [L6393] EXPR (dev->ops)->dev_close [L6393] CALL (*((dev->ops)->dev_close))(dev) [L6824] struct atm_dev *atmtcp_dev ; [L6825] struct atmtcp_dev_data *dev_data ; [L6827] EXPR vcc->dev_data [L6827] atmtcp_dev = (struct atm_dev *)vcc->dev_data [L6828] EXPR atmtcp_dev->dev_data [L6828] dev_data = (struct atmtcp_dev_data *)atmtcp_dev->dev_data [L6829] dev_data->vcc = (struct atm_vcc *)0 [L6830] EXPR dev_data->persist VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_dev={-18446744073709551615:-5}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev_data={-18446744073709551615:-12}, dev_data->persist=0, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, vcc={-18446744073709551615:0}, vcc={-18446744073709551615:0}] [L6830] COND FALSE !(dev_data->persist != 0) [L6834] atmtcp_dev->dev_data = (void *)0 VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_dev={-18446744073709551615:-5}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev_data={-18446744073709551615:-12}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, vcc={-18446744073709551615:0}, vcc={-18446744073709551615:0}] [L6835] CALL kfree((void const *)dev_data) VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, p={-18446744073709551615:-12}, ref_cnt=0] [L6835] RET kfree((void const *)dev_data) VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_dev={-18446744073709551615:-5}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, dev_data={-18446744073709551615:-12}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0, vcc={-18446744073709551615:0}, vcc={-18446744073709551615:0}] [L6836] CALL ldv_atm_dev_deregister_5(atmtcp_dev) [L7476] FCALL atm_dev_deregister(ldv_func_arg1) VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, ldv_func_arg1={-18446744073709551615:-5}, ldv_func_arg1={-18446744073709551615:-5}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L7477] ldv_state_variable_3 = 0 VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, ldv_func_arg1={-18446744073709551615:-5}, ldv_func_arg1={-18446744073709551615:-5}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L6836] RET ldv_atm_dev_deregister_5(atmtcp_dev) [L6837] vcc->dev_data = (void *)0 [L6838] CALL ldv_module_put_6(& __this_module) [L7484] CALL ldv_module_put(ldv_func_arg1) VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, module={21:-20}, ref_cnt=0] [L7596] COND TRUE (unsigned long )module != (unsigned long )((struct module *)0) VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, module={21:-20}, module={21:-20}, ref_cnt=0] [L7597] COND TRUE ldv_module_refcounter <= 1 VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, module={21:-20}, module={21:-20}, ref_cnt=0] [L7598] CALL ldv_error() VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] [L7526] reach_error() VAL [\old(ldv_module_refcounter)=1, \old(ldv_state_variable_3)=0, __this_module={21:-20}, atmtcp_c_dev_ops={13:0}, atmtcp_c_dev_ops_group0={0:0}, atmtcp_control_dev={14:0}, atmtcp_ioctl_ops={15:0}, atmtcp_v_dev_ops={12:0}, atmtcp_v_dev_ops_group0={0:0}, atmtcp_v_dev_ops_group1={0:0}, LDV_IN_INTERRUPT=1, ldv_module_refcounter=1, ldv_retval_0=0, ldv_retval_1=0, ldv_state_variable_0=3, ldv_state_variable_1=1, ldv_state_variable_2=0, ldv_state_variable_3=0, ref_cnt=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 41 procedures, 629 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 344.9s, OverallIterations: 21, TraceHistogramMax: 12, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 299.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 89 mSolverCounterUnknown, 17538 SdHoareTripleChecker+Valid, 283.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 16584 mSDsluCounter, 107954 SdHoareTripleChecker+Invalid, 271.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 92542 mSDsCounter, 9899 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 36783 IncrementalHoareTripleChecker+Invalid, 46771 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9899 mSolverCounterUnsat, 15412 mSDtfsCounter, 36783 mSolverCounterSat, 0.5s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4519 GetRequests, 4048 SyntacticMatches, 21 SemanticMatches, 450 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3250 ImplicationChecksByTransitivity, 22.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2337occurred in iteration=4, InterpolantAutomatonStates: 284, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 20 MinimizatonAttempts, 11731 StatesRemovedByMinimization, 19 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 15.6s SatisfiabilityAnalysisTime, 24.3s InterpolantComputationTime, 5543 NumberOfCodeBlocks, 5543 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 6761 ConstructedInterpolants, 0 QuantifiedInterpolants, 12780 SizeOfPredicates, 28 NumberOfNonLiveVariables, 18542 ConjunctsInSsa, 262 ConjunctsInUnsatCore, 35 InterpolantComputations, 13 PerfectInterpolantSequences, 8513/9159 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-12-06 20:24:19,460 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa --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 e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:24:21,144 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:24:21,146 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:24:21,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:24:21,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:24:21,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:24:21,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:24:21,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:24:21,173 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:24:21,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:24:21,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:24:21,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:24:21,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:24:21,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:24:21,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:24:21,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:24:21,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:24:21,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:24:21,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:24:21,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:24:21,186 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:24:21,187 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:24:21,188 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:24:21,188 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:24:21,191 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:24:21,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:24:21,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:24:21,193 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:24:21,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:24:21,194 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:24:21,194 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:24:21,195 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:24:21,196 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:24:21,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:24:21,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:24:21,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:24:21,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:24:21,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:24:21,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:24:21,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:24:21,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:24:21,226 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Bitvector.epf [2021-12-06 20:24:21,246 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:24:21,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:24:21,246 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:24:21,246 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:24:21,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:24:21,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:24:21,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:24:21,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:24:21,248 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:24:21,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:24:21,248 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:24:21,248 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:24:21,248 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:24:21,248 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:24:21,249 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-06 20:24:21,249 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-06 20:24:21,249 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-06 20:24:21,249 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:24:21,249 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:24:21,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:24:21,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:24:21,249 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:24:21,250 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:24:21,250 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:24:21,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:24:21,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:24:21,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:24:21,250 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-06 20:24:21,250 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-06 20:24:21,250 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:24:21,251 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:24:21,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:24:21,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:24:21,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-06 20:24:21,251 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e6823a3e354b35bf05bec5e81d72dc7306859bf56793457624e681693cebdf0b [2021-12-06 20:24:21,468 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:24:21,482 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:24:21,484 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:24:21,485 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:24:21,485 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:24:21,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2021-12-06 20:24:21,529 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data/5b3f22d94/cbad17e1c3594ff38907ea9d00127526/FLAG82d9e752e [2021-12-06 20:24:22,156 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:24:22,156 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2021-12-06 20:24:22,198 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data/5b3f22d94/cbad17e1c3594ff38907ea9d00127526/FLAG82d9e752e [2021-12-06 20:24:22,581 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/data/5b3f22d94/cbad17e1c3594ff38907ea9d00127526 [2021-12-06 20:24:22,587 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:24:22,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:24:22,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:24:22,592 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:24:22,596 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:24:22,597 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:24:22" (1/1) ... [2021-12-06 20:24:22,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b443c3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:22, skipping insertion in model container [2021-12-06 20:24:22,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:24:22" (1/1) ... [2021-12-06 20:24:22,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:24:22,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:24:23,567 WARN L230 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_e75cdd3b-958c-4cd1-b473-c42e392a19c5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2021-12-06 20:24:23,595 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-06 20:24:23,601 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:24:23,631 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-06 20:24:23,695 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:24:23,891 WARN L230 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_e75cdd3b-958c-4cd1-b473-c42e392a19c5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2021-12-06 20:24:23,897 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-06 20:24:23,901 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:24:23,923 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:24:24,140 WARN L230 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_e75cdd3b-958c-4cd1-b473-c42e392a19c5/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i[225078,225091] [2021-12-06 20:24:24,143 WARN L610 FunctionHandler]: implicit declaration of function ldv_xmalloc [2021-12-06 20:24:24,145 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:24:24,215 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:24:24,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24 WrapperNode [2021-12-06 20:24:24,216 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:24:24,216 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:24:24,217 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:24:24,217 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:24:24,222 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,351 INFO L137 Inliner]: procedures = 155, calls = 1103, calls flagged for inlining = 57, calls inlined = 55, statements flattened = 2401 [2021-12-06 20:24:24,352 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:24:24,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:24:24,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:24:24,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:24:24,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,479 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:24:24,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:24:24,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:24:24,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:24:24,517 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (1/1) ... [2021-12-06 20:24:24,524 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:24:24,534 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:24:24,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:24:24,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure atm_sk [2021-12-06 20:24:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_sk [2021-12-06 20:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-12-06 20:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_from_linear_data [2021-12-06 20:24:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_from_linear_data [2021-12-06 20:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure change_bit [2021-12-06 20:24:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure change_bit [2021-12-06 20:24:24,575 INFO L130 BoogieDeclarations]: Found specification of procedure atm_alloc_charge [2021-12-06 20:24:24,575 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_alloc_charge [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 20:24:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 20:24:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-06 20:24:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-06 20:24:24,576 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 20:24:24,576 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 20:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-12-06 20:24:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-12-06 20:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 20:24:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 20:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure sk_sleep [2021-12-06 20:24:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_sleep [2021-12-06 20:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2021-12-06 20:24:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2021-12-06 20:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_ioctl [2021-12-06 20:24:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_ioctl [2021-12-06 20:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 20:24:24,577 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 20:24:24,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 20:24:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 20:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-12-06 20:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2021-12-06 20:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2021-12-06 20:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2021-12-06 20:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 20:24:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 20:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-06 20:24:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-06 20:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 20:24:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 20:24:24,578 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_dev_close [2021-12-06 20:24:24,578 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_dev_close [2021-12-06 20:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 20:24:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 20:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 20:24:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 20:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 20:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-06 20:24:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-06 20:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure sk_atm [2021-12-06 20:24:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure sk_atm [2021-12-06 20:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-12-06 20:24:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-12-06 20:24:24,579 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_send [2021-12-06 20:24:24,579 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_send [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2021-12-06 20:24:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_xmalloc [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_create [2021-12-06 20:24:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_create [2021-12-06 20:24:24,580 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_c_close [2021-12-06 20:24:24,580 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_c_close [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_deregister [2021-12-06 20:24:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_deregister [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_close [2021-12-06 20:24:24,581 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_close [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2021-12-06 20:24:24,581 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-06 20:24:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-06 20:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_put [2021-12-06 20:24:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_put [2021-12-06 20:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-06 20:24:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-06 20:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure atm_dev_lookup [2021-12-06 20:24:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure atm_dev_lookup [2021-12-06 20:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-06 20:24:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-06 20:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2021-12-06 20:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_v_send [2021-12-06 20:24:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_v_send [2021-12-06 20:24:24,582 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-06 20:24:24,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-12-06 20:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure atmtcp_send_control [2021-12-06 20:24:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure atmtcp_send_control [2021-12-06 20:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock [2021-12-06 20:24:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock [2021-12-06 20:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:24:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:24:24,583 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_lock [2021-12-06 20:24:24,583 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_lock [2021-12-06 20:24:24,932 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:24:24,934 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:24:28,998 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 20:24:48,892 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:24:48,905 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:24:48,905 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 20:24:48,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:24:48 BoogieIcfgContainer [2021-12-06 20:24:48,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:24:48,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:24:48,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:24:48,912 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:24:48,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:24:22" (1/3) ... [2021-12-06 20:24:48,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4507e5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:24:48, skipping insertion in model container [2021-12-06 20:24:48,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:24:24" (2/3) ... [2021-12-06 20:24:48,913 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4507e5aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:24:48, skipping insertion in model container [2021-12-06 20:24:48,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:24:48" (3/3) ... [2021-12-06 20:24:48,914 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--atm--atmtcp.ko-entry_point.cil.out.i [2021-12-06 20:24:48,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:24:48,918 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:24:48,957 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:24:48,962 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 20:24:48,962 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:24:48,984 INFO L276 IsEmpty]: Start isEmpty. Operand has 628 states, 450 states have (on average 1.3444444444444446) internal successors, (605), 467 states have internal predecessors, (605), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) [2021-12-06 20:24:48,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 20:24:48,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:48,995 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:24:48,995 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:48,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:48,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1856106833, now seen corresponding path program 1 times [2021-12-06 20:24:49,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:24:49,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [170309264] [2021-12-06 20:24:49,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:49,013 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:24:49,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:24:49,014 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:24:49,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-06 20:24:49,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:49,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 1 conjunts are in the unsatisfiable core [2021-12-06 20:24:49,610 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:51,051 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-06 20:24:51,052 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:24:51,052 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:24:51,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [170309264] [2021-12-06 20:24:51,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [170309264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:24:51,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:24:51,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:24:51,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113663579] [2021-12-06 20:24:51,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:24:51,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-06 20:24:51,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:24:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-06 20:24:51,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:24:51,086 INFO L87 Difference]: Start difference. First operand has 628 states, 450 states have (on average 1.3444444444444446) internal successors, (605), 467 states have internal predecessors, (605), 137 states have call successors, (137), 40 states have call predecessors, (137), 39 states have return successors, (132), 129 states have call predecessors, (132), 132 states have call successors, (132) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 20:24:51,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:51,158 INFO L93 Difference]: Finished difference Result 1251 states and 1781 transitions. [2021-12-06 20:24:51,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-06 20:24:51,159 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 133 [2021-12-06 20:24:51,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:51,174 INFO L225 Difference]: With dead ends: 1251 [2021-12-06 20:24:51,174 INFO L226 Difference]: Without dead ends: 615 [2021-12-06 20:24:51,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-06 20:24:51,184 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 869 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:51,184 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 869 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 20:24:51,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2021-12-06 20:24:51,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2021-12-06 20:24:51,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 444 states have (on average 1.3288288288288288) internal successors, (590), 454 states have internal predecessors, (590), 132 states have call successors, (132), 39 states have call predecessors, (132), 38 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2021-12-06 20:24:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 852 transitions. [2021-12-06 20:24:51,274 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 852 transitions. Word has length 133 [2021-12-06 20:24:51,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:51,275 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 852 transitions. [2021-12-06 20:24:51,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 20:24:51,275 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 852 transitions. [2021-12-06 20:24:51,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-12-06 20:24:51,279 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:51,280 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:24:51,298 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:24:51,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:24:51,481 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:51,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:51,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1666389307, now seen corresponding path program 1 times [2021-12-06 20:24:51,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:24:51,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1995413621] [2021-12-06 20:24:51,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:51,483 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:24:51,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:24:51,484 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:24:51,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-06 20:24:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:52,031 INFO L263 TraceCheckSpWp]: Trace formula consists of 1345 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 20:24:52,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 219 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2021-12-06 20:24:53,137 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:24:53,137 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:24:53,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1995413621] [2021-12-06 20:24:53,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1995413621] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:24:53,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:24:53,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:24:53,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266309612] [2021-12-06 20:24:53,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:24:53,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:24:53,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:24:53,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:24:53,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:24:53,141 INFO L87 Difference]: Start difference. First operand 615 states and 852 transitions. Second operand has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:24:54,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:24:54,058 INFO L93 Difference]: Finished difference Result 1220 states and 1700 transitions. [2021-12-06 20:24:54,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:24:54,059 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 133 [2021-12-06 20:24:54,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:24:54,066 INFO L225 Difference]: With dead ends: 1220 [2021-12-06 20:24:54,066 INFO L226 Difference]: Without dead ends: 616 [2021-12-06 20:24:54,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:24:54,070 INFO L933 BasicCegarLoop]: 847 mSDtfsCounter, 6 mSDsluCounter, 3375 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4222 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:24:54,071 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 4222 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-06 20:24:54,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2021-12-06 20:24:54,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 616. [2021-12-06 20:24:54,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 445 states have (on average 1.3280898876404494) internal successors, (591), 455 states have internal predecessors, (591), 132 states have call successors, (132), 39 states have call predecessors, (132), 38 states have return successors, (130), 127 states have call predecessors, (130), 130 states have call successors, (130) [2021-12-06 20:24:54,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 853 transitions. [2021-12-06 20:24:54,107 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 853 transitions. Word has length 133 [2021-12-06 20:24:54,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:24:54,109 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 853 transitions. [2021-12-06 20:24:54,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 8.6) internal successors, (43), 6 states have internal predecessors, (43), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:24:54,109 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 853 transitions. [2021-12-06 20:24:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 20:24:54,112 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:24:54,112 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:24:54,136 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-06 20:24:54,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:24:54,313 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:24:54,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:24:54,314 INFO L85 PathProgramCache]: Analyzing trace with hash -948571825, now seen corresponding path program 1 times [2021-12-06 20:24:54,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:24:54,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529682181] [2021-12-06 20:24:54,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:24:54,316 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:24:54,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:24:54,316 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:24:54,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-06 20:24:54,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:24:54,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 1367 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:24:54,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:24:56,173 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2021-12-06 20:24:56,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:24:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-12-06 20:24:59,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:24:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529682181] [2021-12-06 20:24:59,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529682181] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:24:59,230 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:24:59,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 11 [2021-12-06 20:24:59,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010783829] [2021-12-06 20:24:59,230 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:24:59,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:24:59,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:24:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:24:59,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:24:59,232 INFO L87 Difference]: Start difference. First operand 616 states and 853 transitions. Second operand has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 20:25:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:01,241 INFO L93 Difference]: Finished difference Result 1227 states and 1708 transitions. [2021-12-06 20:25:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 20:25:01,242 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 135 [2021-12-06 20:25:01,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:01,246 INFO L225 Difference]: With dead ends: 1227 [2021-12-06 20:25:01,247 INFO L226 Difference]: Without dead ends: 622 [2021-12-06 20:25:01,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:25:01,250 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 8 mSDsluCounter, 5910 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 6758 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:01,250 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 6758 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 20:25:01,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-12-06 20:25:01,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2021-12-06 20:25:01,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 449 states have (on average 1.3251670378619154) internal successors, (595), 459 states have internal predecessors, (595), 133 states have call successors, (133), 40 states have call predecessors, (133), 39 states have return successors, (131), 128 states have call predecessors, (131), 131 states have call successors, (131) [2021-12-06 20:25:01,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 859 transitions. [2021-12-06 20:25:01,273 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 859 transitions. Word has length 135 [2021-12-06 20:25:01,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:01,274 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 859 transitions. [2021-12-06 20:25:01,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 6.444444444444445) internal successors, (58), 11 states have internal predecessors, (58), 4 states have call successors, (16), 2 states have call predecessors, (16), 5 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2021-12-06 20:25:01,274 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 859 transitions. [2021-12-06 20:25:01,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-06 20:25:01,276 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:01,276 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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] [2021-12-06 20:25:01,301 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-06 20:25:01,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:25:01,478 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:01,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:01,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1599863547, now seen corresponding path program 2 times [2021-12-06 20:25:01,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:25:01,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41443158] [2021-12-06 20:25:01,484 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:25:01,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:25:01,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:25:01,487 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:25:01,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-06 20:25:01,910 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 20:25:01,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:25:01,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:25:01,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:06,247 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-12-06 20:25:06,247 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:25:06,247 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:25:06,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41443158] [2021-12-06 20:25:06,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41443158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:06,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:06,248 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-06 20:25:06,248 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762565265] [2021-12-06 20:25:06,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:06,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:25:06,249 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:25:06,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:25:06,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:25:06,250 INFO L87 Difference]: Start difference. First operand 622 states and 859 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 20:25:06,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:06,419 INFO L93 Difference]: Finished difference Result 1806 states and 2508 transitions. [2021-12-06 20:25:06,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:25:06,419 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 137 [2021-12-06 20:25:06,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:06,429 INFO L225 Difference]: With dead ends: 1806 [2021-12-06 20:25:06,430 INFO L226 Difference]: Without dead ends: 1209 [2021-12-06 20:25:06,433 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:25:06,434 INFO L933 BasicCegarLoop]: 996 mSDtfsCounter, 789 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1811 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:06,434 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [789 Valid, 1811 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:25:06,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1209 states. [2021-12-06 20:25:06,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1209 to 1206. [2021-12-06 20:25:06,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 875 states have (on average 1.3302857142857143) internal successors, (1164), 894 states have internal predecessors, (1164), 254 states have call successors, (254), 77 states have call predecessors, (254), 76 states have return successors, (252), 246 states have call predecessors, (252), 252 states have call successors, (252) [2021-12-06 20:25:06,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1670 transitions. [2021-12-06 20:25:06,502 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1670 transitions. Word has length 137 [2021-12-06 20:25:06,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:06,503 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1670 transitions. [2021-12-06 20:25:06,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 2 states have internal predecessors, (38), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2021-12-06 20:25:06,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1670 transitions. [2021-12-06 20:25:06,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 20:25:06,508 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:06,508 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 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] [2021-12-06 20:25:06,524 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2021-12-06 20:25:06,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:25:06,709 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:06,709 INFO L85 PathProgramCache]: Analyzing trace with hash -544277527, now seen corresponding path program 1 times [2021-12-06 20:25:06,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:25:06,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965522548] [2021-12-06 20:25:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:06,711 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:25:06,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:25:06,711 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:25:06,712 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-06 20:25:07,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:07,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1470 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 20:25:07,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:09,074 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2021-12-06 20:25:09,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:25:13,130 INFO L134 CoverageAnalysis]: Checked inductivity of 233 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2021-12-06 20:25:13,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:25:13,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965522548] [2021-12-06 20:25:13,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965522548] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:25:13,130 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:25:13,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-12-06 20:25:13,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406093191] [2021-12-06 20:25:13,131 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:25:13,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-06 20:25:13,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:25:13,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-06 20:25:13,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:25:13,132 INFO L87 Difference]: Start difference. First operand 1206 states and 1670 transitions. Second operand has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:25:15,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:15,058 INFO L93 Difference]: Finished difference Result 2403 states and 3348 transitions. [2021-12-06 20:25:15,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 20:25:15,059 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 154 [2021-12-06 20:25:15,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:15,066 INFO L225 Difference]: With dead ends: 2403 [2021-12-06 20:25:15,067 INFO L226 Difference]: Without dead ends: 1208 [2021-12-06 20:25:15,071 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:25:15,072 INFO L933 BasicCegarLoop]: 848 mSDtfsCounter, 15 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:15,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 4226 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 20:25:15,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1208 states. [2021-12-06 20:25:15,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1208 to 1208. [2021-12-06 20:25:15,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1208 states, 877 states have (on average 1.329532497149373) internal successors, (1166), 896 states have internal predecessors, (1166), 254 states have call successors, (254), 77 states have call predecessors, (254), 76 states have return successors, (252), 246 states have call predecessors, (252), 252 states have call successors, (252) [2021-12-06 20:25:15,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1208 states to 1208 states and 1672 transitions. [2021-12-06 20:25:15,118 INFO L78 Accepts]: Start accepts. Automaton has 1208 states and 1672 transitions. Word has length 154 [2021-12-06 20:25:15,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:15,119 INFO L470 AbstractCegarLoop]: Abstraction has 1208 states and 1672 transitions. [2021-12-06 20:25:15,119 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.818181818181818) internal successors, (75), 13 states have internal predecessors, (75), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:25:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 1208 states and 1672 transitions. [2021-12-06 20:25:15,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-06 20:25:15,121 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:15,121 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:25:15,148 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-12-06 20:25:15,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:25:15,322 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:15,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:15,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1428874527, now seen corresponding path program 2 times [2021-12-06 20:25:15,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:25:15,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [141206481] [2021-12-06 20:25:15,324 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:25:15,324 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:25:15,324 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:25:15,324 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:25:15,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-06 20:25:15,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 20:25:15,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:25:15,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 1153 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:25:15,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:16,414 INFO L134 CoverageAnalysis]: Checked inductivity of 246 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 246 trivial. 0 not checked. [2021-12-06 20:25:16,414 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:25:16,414 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:25:16,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [141206481] [2021-12-06 20:25:16,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [141206481] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:16,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:16,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:25:16,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428317020] [2021-12-06 20:25:16,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:16,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:25:16,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:25:16,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:25:16,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:25:16,416 INFO L87 Difference]: Start difference. First operand 1208 states and 1672 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:25:16,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:16,615 INFO L93 Difference]: Finished difference Result 2213 states and 3047 transitions. [2021-12-06 20:25:16,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:25:16,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 156 [2021-12-06 20:25:16,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:16,622 INFO L225 Difference]: With dead ends: 2213 [2021-12-06 20:25:16,622 INFO L226 Difference]: Without dead ends: 1034 [2021-12-06 20:25:16,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:25:16,626 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 714 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:16,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 720 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:25:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2021-12-06 20:25:16,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 1034. [2021-12-06 20:25:16,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1034 states, 753 states have (on average 1.3227091633466135) internal successors, (996), 766 states have internal predecessors, (996), 208 states have call successors, (208), 73 states have call predecessors, (208), 72 states have return successors, (206), 202 states have call predecessors, (206), 206 states have call successors, (206) [2021-12-06 20:25:16,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1410 transitions. [2021-12-06 20:25:16,661 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1410 transitions. Word has length 156 [2021-12-06 20:25:16,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:16,662 INFO L470 AbstractCegarLoop]: Abstraction has 1034 states and 1410 transitions. [2021-12-06 20:25:16,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:25:16,662 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1410 transitions. [2021-12-06 20:25:16,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-06 20:25:16,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:16,665 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:25:16,687 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2021-12-06 20:25:16,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:25:16,866 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:16,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:16,868 INFO L85 PathProgramCache]: Analyzing trace with hash 2064448554, now seen corresponding path program 1 times [2021-12-06 20:25:16,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:25:16,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2125928834] [2021-12-06 20:25:16,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:16,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:25:16,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:25:16,875 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:25:16,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-12-06 20:25:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:17,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:25:17,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 24 proven. 6 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2021-12-06 20:25:19,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:25:25,370 INFO L134 CoverageAnalysis]: Checked inductivity of 248 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-06 20:25:25,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:25:25,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2125928834] [2021-12-06 20:25:25,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2125928834] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:25:25,370 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:25:25,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2021-12-06 20:25:25,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453308067] [2021-12-06 20:25:25,371 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:25:25,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 20:25:25,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:25:25,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 20:25:25,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:25:25,372 INFO L87 Difference]: Start difference. First operand 1034 states and 1410 transitions. Second operand has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 15 states have internal predecessors, (97), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:25:28,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:28,103 INFO L93 Difference]: Finished difference Result 2059 states and 2828 transitions. [2021-12-06 20:25:28,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 20:25:28,104 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 15 states have internal predecessors, (97), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 173 [2021-12-06 20:25:28,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:28,110 INFO L225 Difference]: With dead ends: 2059 [2021-12-06 20:25:28,110 INFO L226 Difference]: Without dead ends: 1036 [2021-12-06 20:25:28,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 331 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:25:28,114 INFO L933 BasicCegarLoop]: 717 mSDtfsCounter, 10 mSDsluCounter, 5709 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6426 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:28,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 6426 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-06 20:25:28,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2021-12-06 20:25:28,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 1036. [2021-12-06 20:25:28,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 755 states have (on average 1.3218543046357616) internal successors, (998), 768 states have internal predecessors, (998), 208 states have call successors, (208), 73 states have call predecessors, (208), 72 states have return successors, (206), 202 states have call predecessors, (206), 206 states have call successors, (206) [2021-12-06 20:25:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1412 transitions. [2021-12-06 20:25:28,151 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1412 transitions. Word has length 173 [2021-12-06 20:25:28,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:28,151 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1412 transitions. [2021-12-06 20:25:28,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 7.461538461538462) internal successors, (97), 15 states have internal predecessors, (97), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:25:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1412 transitions. [2021-12-06 20:25:28,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-06 20:25:28,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:28,154 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:25:28,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-12-06 20:25:28,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:25:28,355 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:28,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:28,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1973996768, now seen corresponding path program 2 times [2021-12-06 20:25:28,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:25:28,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1455862103] [2021-12-06 20:25:28,357 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:25:28,357 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:25:28,357 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:25:28,357 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:25:28,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-12-06 20:25:28,730 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 20:25:28,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:25:28,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 1072 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:25:28,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:30,239 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 265 trivial. 0 not checked. [2021-12-06 20:25:30,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:25:30,240 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:25:30,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1455862103] [2021-12-06 20:25:30,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1455862103] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:30,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:30,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:25:30,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787252638] [2021-12-06 20:25:30,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:30,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:25:30,241 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:25:30,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:25:30,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:25:30,242 INFO L87 Difference]: Start difference. First operand 1036 states and 1412 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:25:30,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:30,627 INFO L93 Difference]: Finished difference Result 3039 states and 4149 transitions. [2021-12-06 20:25:30,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:25:30,628 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 175 [2021-12-06 20:25:30,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:30,638 INFO L225 Difference]: With dead ends: 3039 [2021-12-06 20:25:30,638 INFO L226 Difference]: Without dead ends: 2032 [2021-12-06 20:25:30,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:25:30,642 INFO L933 BasicCegarLoop]: 869 mSDtfsCounter, 641 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1576 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:30,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [641 Valid, 1576 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 20:25:30,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2032 states. [2021-12-06 20:25:30,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2032 to 2028. [2021-12-06 20:25:30,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2028 states, 1481 states have (on average 1.3234301147873058) internal successors, (1960), 1506 states have internal predecessors, (1960), 404 states have call successors, (404), 143 states have call predecessors, (404), 142 states have return successors, (402), 394 states have call predecessors, (402), 402 states have call successors, (402) [2021-12-06 20:25:30,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2028 states to 2028 states and 2766 transitions. [2021-12-06 20:25:30,713 INFO L78 Accepts]: Start accepts. Automaton has 2028 states and 2766 transitions. Word has length 175 [2021-12-06 20:25:30,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:30,713 INFO L470 AbstractCegarLoop]: Abstraction has 2028 states and 2766 transitions. [2021-12-06 20:25:30,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:25:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2028 states and 2766 transitions. [2021-12-06 20:25:30,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-06 20:25:30,717 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:30,717 INFO L514 BasicCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:25:30,738 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2021-12-06 20:25:30,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:25:30,918 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:30,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:30,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2040758566, now seen corresponding path program 1 times [2021-12-06 20:25:30,920 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:25:30,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [519932145] [2021-12-06 20:25:30,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:30,920 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:25:30,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:25:30,921 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:25:30,922 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-12-06 20:25:31,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:31,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 1645 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 20:25:31,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2021-12-06 20:25:34,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:25:41,038 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-06 20:25:41,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:25:41,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [519932145] [2021-12-06 20:25:41,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [519932145] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:25:41,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:25:41,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2021-12-06 20:25:41,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850623846] [2021-12-06 20:25:41,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:25:41,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-06 20:25:41,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:25:41,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-06 20:25:41,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:25:41,040 INFO L87 Difference]: Start difference. First operand 2028 states and 2766 transitions. Second operand has 17 states, 15 states have (on average 6.8) internal successors, (102), 17 states have internal predecessors, (102), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-06 20:25:45,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:45,678 INFO L93 Difference]: Finished difference Result 4056 states and 5573 transitions. [2021-12-06 20:25:45,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 20:25:45,679 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 6.8) internal successors, (102), 17 states have internal predecessors, (102), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 182 [2021-12-06 20:25:45,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:45,693 INFO L225 Difference]: With dead ends: 4056 [2021-12-06 20:25:45,693 INFO L226 Difference]: Without dead ends: 2040 [2021-12-06 20:25:45,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2021-12-06 20:25:45,701 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 14 mSDsluCounter, 5708 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 6426 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:45,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 6426 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 20:25:45,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2040 states. [2021-12-06 20:25:45,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2040 to 2040. [2021-12-06 20:25:45,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2040 states, 1492 states have (on average 1.32171581769437) internal successors, (1972), 1517 states have internal predecessors, (1972), 404 states have call successors, (404), 144 states have call predecessors, (404), 143 states have return successors, (402), 394 states have call predecessors, (402), 402 states have call successors, (402) [2021-12-06 20:25:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2778 transitions. [2021-12-06 20:25:45,777 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2778 transitions. Word has length 182 [2021-12-06 20:25:45,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:45,778 INFO L470 AbstractCegarLoop]: Abstraction has 2040 states and 2778 transitions. [2021-12-06 20:25:45,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 6.8) internal successors, (102), 17 states have internal predecessors, (102), 4 states have call successors, (27), 2 states have call predecessors, (27), 5 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-06 20:25:45,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2778 transitions. [2021-12-06 20:25:45,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-06 20:25:45,782 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:45,782 INFO L514 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:25:45,813 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2021-12-06 20:25:45,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:25:45,984 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:45,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:45,985 INFO L85 PathProgramCache]: Analyzing trace with hash -798619786, now seen corresponding path program 2 times [2021-12-06 20:25:45,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:25:45,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [209760048] [2021-12-06 20:25:45,990 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:25:45,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:25:45,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:25:45,993 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:25:45,996 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-12-06 20:25:46,517 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-06 20:25:46,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:25:46,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 2 conjunts are in the unsatisfiable core [2021-12-06 20:25:46,552 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:47,597 INFO L134 CoverageAnalysis]: Checked inductivity of 273 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2021-12-06 20:25:47,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:25:47,597 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:25:47,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [209760048] [2021-12-06 20:25:47,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [209760048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:25:47,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:25:47,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-06 20:25:47,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877868400] [2021-12-06 20:25:47,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:25:47,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-06 20:25:47,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:25:47,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-06 20:25:47,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:25:47,599 INFO L87 Difference]: Start difference. First operand 2040 states and 2778 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:25:47,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:25:47,891 INFO L93 Difference]: Finished difference Result 5488 states and 7483 transitions. [2021-12-06 20:25:47,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-06 20:25:47,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 183 [2021-12-06 20:25:47,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:25:47,908 INFO L225 Difference]: With dead ends: 5488 [2021-12-06 20:25:47,908 INFO L226 Difference]: Without dead ends: 3481 [2021-12-06 20:25:47,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-06 20:25:47,914 INFO L933 BasicCegarLoop]: 808 mSDtfsCounter, 530 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 530 SdHoareTripleChecker+Valid, 1491 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:25:47,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [530 Valid, 1491 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 20:25:47,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3481 states. [2021-12-06 20:25:48,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3481 to 3474. [2021-12-06 20:25:48,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3474 states, 2542 states have (on average 1.3273013375295044) internal successors, (3374), 2583 states have internal predecessors, (3374), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2021-12-06 20:25:48,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 4736 transitions. [2021-12-06 20:25:48,023 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 4736 transitions. Word has length 183 [2021-12-06 20:25:48,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:25:48,024 INFO L470 AbstractCegarLoop]: Abstraction has 3474 states and 4736 transitions. [2021-12-06 20:25:48,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:25:48,024 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 4736 transitions. [2021-12-06 20:25:48,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2021-12-06 20:25:48,028 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:25:48,028 INFO L514 BasicCegarLoop]: trace histogram [9, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:25:48,055 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2021-12-06 20:25:48,229 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:25:48,229 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:25:48,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:25:48,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1474429788, now seen corresponding path program 1 times [2021-12-06 20:25:48,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:25:48,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1435099090] [2021-12-06 20:25:48,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:25:48,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:25:48,231 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:25:48,232 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:25:48,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-12-06 20:25:48,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:25:48,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 1616 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-06 20:25:48,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:25:52,169 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-06 20:25:52,169 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:26:00,107 INFO L134 CoverageAnalysis]: Checked inductivity of 282 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 20:26:00,107 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:26:00,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1435099090] [2021-12-06 20:26:00,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1435099090] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:26:00,108 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:26:00,108 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2021-12-06 20:26:00,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619150880] [2021-12-06 20:26:00,108 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:26:00,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-06 20:26:00,109 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:26:00,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-06 20:26:00,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=276, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:26:00,109 INFO L87 Difference]: Start difference. First operand 3474 states and 4736 transitions. Second operand has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 19 states have internal predecessors, (108), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:26:05,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:26:05,608 INFO L93 Difference]: Finished difference Result 6944 states and 9530 transitions. [2021-12-06 20:26:05,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 20:26:05,609 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 19 states have internal predecessors, (108), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 187 [2021-12-06 20:26:05,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:26:05,624 INFO L225 Difference]: With dead ends: 6944 [2021-12-06 20:26:05,625 INFO L226 Difference]: Without dead ends: 3482 [2021-12-06 20:26:05,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 8.4s TimeCoverageRelationStatistics Valid=132, Invalid=518, Unknown=0, NotChecked=0, Total=650 [2021-12-06 20:26:05,634 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 19 mSDsluCounter, 7143 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 7862 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:26:05,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 7862 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 20:26:05,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2021-12-06 20:26:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 3482. [2021-12-06 20:26:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 2550 states have (on average 1.3262745098039215) internal successors, (3382), 2591 states have internal predecessors, (3382), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2021-12-06 20:26:05,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 4744 transitions. [2021-12-06 20:26:05,736 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 4744 transitions. Word has length 187 [2021-12-06 20:26:05,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:26:05,736 INFO L470 AbstractCegarLoop]: Abstraction has 3482 states and 4744 transitions. [2021-12-06 20:26:05,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 6.352941176470588) internal successors, (108), 19 states have internal predecessors, (108), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:26:05,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 4744 transitions. [2021-12-06 20:26:05,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-06 20:26:05,741 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:26:05,741 INFO L514 BasicCegarLoop]: trace histogram [10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:26:05,772 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-12-06 20:26:05,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:26:05,941 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:26:05,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:26:05,942 INFO L85 PathProgramCache]: Analyzing trace with hash 146897984, now seen corresponding path program 2 times [2021-12-06 20:26:05,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:26:05,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80330726] [2021-12-06 20:26:05,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:26:05,944 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:26:05,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:26:05,944 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:26:05,945 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-12-06 20:26:08,119 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:26:08,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:26:08,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 20:26:08,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:26:11,797 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 43 proven. 21 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-06 20:26:11,797 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:26:21,105 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 20:26:21,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:26:21,106 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80330726] [2021-12-06 20:26:21,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80330726] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:26:21,106 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:26:21,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2021-12-06 20:26:21,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227576200] [2021-12-06 20:26:21,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:26:21,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-06 20:26:21,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:26:21,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-06 20:26:21,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2021-12-06 20:26:21,107 INFO L87 Difference]: Start difference. First operand 3482 states and 4744 transitions. Second operand has 21 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 21 states have internal predecessors, (110), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:26:27,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:26:27,446 INFO L93 Difference]: Finished difference Result 6960 states and 9546 transitions. [2021-12-06 20:26:27,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 20:26:27,447 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 21 states have internal predecessors, (110), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) Word has length 188 [2021-12-06 20:26:27,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:26:27,462 INFO L225 Difference]: With dead ends: 6960 [2021-12-06 20:26:27,462 INFO L226 Difference]: Without dead ends: 3490 [2021-12-06 20:26:27,472 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 355 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 10.1s TimeCoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:26:27,472 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 25 mSDsluCounter, 7141 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 7860 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:26:27,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 7860 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 20:26:27,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3490 states. [2021-12-06 20:26:27,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3490 to 3490. [2021-12-06 20:26:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3490 states, 2558 states have (on average 1.3252541047693511) internal successors, (3390), 2599 states have internal predecessors, (3390), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2021-12-06 20:26:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3490 states to 3490 states and 4752 transitions. [2021-12-06 20:26:27,586 INFO L78 Accepts]: Start accepts. Automaton has 3490 states and 4752 transitions. Word has length 188 [2021-12-06 20:26:27,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:26:27,586 INFO L470 AbstractCegarLoop]: Abstraction has 3490 states and 4752 transitions. [2021-12-06 20:26:27,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 5.7894736842105265) internal successors, (110), 21 states have internal predecessors, (110), 4 states have call successors, (20), 2 states have call predecessors, (20), 5 states have return successors, (20), 4 states have call predecessors, (20), 4 states have call successors, (20) [2021-12-06 20:26:27,586 INFO L276 IsEmpty]: Start isEmpty. Operand 3490 states and 4752 transitions. [2021-12-06 20:26:27,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2021-12-06 20:26:27,591 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:26:27,591 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:26:27,623 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-12-06 20:26:27,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:26:27,792 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:26:27,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:26:27,792 INFO L85 PathProgramCache]: Analyzing trace with hash 1943085020, now seen corresponding path program 3 times [2021-12-06 20:26:27,793 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:26:27,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89148328] [2021-12-06 20:26:27,794 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-06 20:26:27,794 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:26:27,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:26:27,794 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:26:27,795 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-12-06 20:26:29,838 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-06 20:26:29,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:26:29,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 1329 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 20:26:29,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:26:30,027 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:26:30,088 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:26:30,352 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:26:30,383 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:26:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2021-12-06 20:26:31,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:26:31,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:26:31,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89148328] [2021-12-06 20:26:31,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89148328] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:26:31,013 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:26:31,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:26:31,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358389748] [2021-12-06 20:26:31,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:26:31,014 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:26:31,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:26:31,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:26:31,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:26:31,014 INFO L87 Difference]: Start difference. First operand 3490 states and 4752 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:26:34,202 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:26:37,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:26:39,070 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:26:42,704 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:26:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:26:44,038 INFO L93 Difference]: Finished difference Result 6947 states and 9471 transitions. [2021-12-06 20:26:44,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:26:44,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 189 [2021-12-06 20:26:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:26:44,063 INFO L225 Difference]: With dead ends: 6947 [2021-12-06 20:26:44,064 INFO L226 Difference]: Without dead ends: 3502 [2021-12-06 20:26:44,073 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:26:44,073 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 2 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:26:44,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 2073 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 86 Invalid, 3 Unknown, 0 Unchecked, 12.7s Time] [2021-12-06 20:26:44,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3502 states. [2021-12-06 20:26:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3502 to 3498. [2021-12-06 20:26:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3498 states, 2566 states have (on average 1.3242400623538582) internal successors, (3398), 2607 states have internal predecessors, (3398), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2021-12-06 20:26:44,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3498 states to 3498 states and 4760 transitions. [2021-12-06 20:26:44,185 INFO L78 Accepts]: Start accepts. Automaton has 3498 states and 4760 transitions. Word has length 189 [2021-12-06 20:26:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:26:44,185 INFO L470 AbstractCegarLoop]: Abstraction has 3498 states and 4760 transitions. [2021-12-06 20:26:44,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-06 20:26:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3498 states and 4760 transitions. [2021-12-06 20:26:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2021-12-06 20:26:44,190 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:26:44,190 INFO L514 BasicCegarLoop]: trace histogram [11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:26:44,219 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-12-06 20:26:44,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:26:44,391 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:26:44,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:26:44,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1478100512, now seen corresponding path program 1 times [2021-12-06 20:26:44,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:26:44,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2118626246] [2021-12-06 20:26:44,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:26:44,393 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:26:44,393 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:26:44,394 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:26:44,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-12-06 20:26:45,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:26:45,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 1669 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 20:26:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:26:52,211 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 48 proven. 28 refuted. 0 times theorem prover too weak. 229 trivial. 0 not checked. [2021-12-06 20:26:52,211 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 20:27:09,351 INFO L134 CoverageAnalysis]: Checked inductivity of 305 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2021-12-06 20:27:09,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:27:09,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2118626246] [2021-12-06 20:27:09,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2118626246] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 20:27:09,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 20:27:09,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 23 [2021-12-06 20:27:09,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20282357] [2021-12-06 20:27:09,352 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 20:27:09,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-06 20:27:09,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:27:09,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-06 20:27:09,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2021-12-06 20:27:09,354 INFO L87 Difference]: Start difference. First operand 3498 states and 4760 transitions. Second operand has 23 states, 21 states have (on average 5.809523809523809) internal successors, (122), 23 states have internal predecessors, (122), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-06 20:27:21,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:21,736 INFO L93 Difference]: Finished difference Result 6992 states and 9578 transitions. [2021-12-06 20:27:21,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 20:27:21,738 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 5.809523809523809) internal successors, (122), 23 states have internal predecessors, (122), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 196 [2021-12-06 20:27:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:21,755 INFO L225 Difference]: With dead ends: 6992 [2021-12-06 20:27:21,755 INFO L226 Difference]: Without dead ends: 3506 [2021-12-06 20:27:21,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 369 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=169, Invalid=701, Unknown=0, NotChecked=0, Total=870 [2021-12-06 20:27:21,766 INFO L933 BasicCegarLoop]: 719 mSDtfsCounter, 22 mSDsluCounter, 9997 mSDsCounter, 0 mSdLazyCounter, 302 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 10716 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:21,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 10716 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 302 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-12-06 20:27:21,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3506 states. [2021-12-06 20:27:21,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3506 to 3506. [2021-12-06 20:27:21,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 2574 states have (on average 1.3232323232323233) internal successors, (3406), 2615 states have internal predecessors, (3406), 682 states have call successors, (682), 250 states have call predecessors, (682), 249 states have return successors, (680), 672 states have call predecessors, (680), 680 states have call successors, (680) [2021-12-06 20:27:21,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 4768 transitions. [2021-12-06 20:27:21,858 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 4768 transitions. Word has length 196 [2021-12-06 20:27:21,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:21,858 INFO L470 AbstractCegarLoop]: Abstraction has 3506 states and 4768 transitions. [2021-12-06 20:27:21,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 5.809523809523809) internal successors, (122), 23 states have internal predecessors, (122), 4 states have call successors, (22), 2 states have call predecessors, (22), 5 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2021-12-06 20:27:21,859 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 4768 transitions. [2021-12-06 20:27:21,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-12-06 20:27:21,863 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:21,863 INFO L514 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:21,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2021-12-06 20:27:22,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:27:22,063 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:22,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:22,064 INFO L85 PathProgramCache]: Analyzing trace with hash 814370236, now seen corresponding path program 2 times [2021-12-06 20:27:22,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:27:22,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542319515] [2021-12-06 20:27:22,065 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-06 20:27:22,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:27:22,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:27:22,066 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:27:22,067 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-12-06 20:27:24,382 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-06 20:27:24,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-06 20:27:24,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 1680 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-06 20:27:24,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-12-06 20:27:26,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:27:26,382 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:27:26,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542319515] [2021-12-06 20:27:26,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542319515] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:26,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:26,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:27:26,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380736066] [2021-12-06 20:27:26,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:26,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:27:26,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:27:26,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:27:26,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:27:26,385 INFO L87 Difference]: Start difference. First operand 3506 states and 4768 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:27:28,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:28,436 INFO L93 Difference]: Finished difference Result 8305 states and 11635 transitions. [2021-12-06 20:27:28,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:27:28,437 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 197 [2021-12-06 20:27:28,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:28,464 INFO L225 Difference]: With dead ends: 8305 [2021-12-06 20:27:28,464 INFO L226 Difference]: Without dead ends: 4844 [2021-12-06 20:27:28,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:27:28,471 INFO L933 BasicCegarLoop]: 910 mSDtfsCounter, 590 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 5087 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:28,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 5087 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-06 20:27:28,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4844 states. [2021-12-06 20:27:28,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4844 to 3530. [2021-12-06 20:27:28,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3530 states, 2594 states have (on average 1.3207401696222052) internal successors, (3426), 2635 states have internal predecessors, (3426), 682 states have call successors, (682), 250 states have call predecessors, (682), 253 states have return successors, (688), 676 states have call predecessors, (688), 680 states have call successors, (688) [2021-12-06 20:27:28,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3530 states to 3530 states and 4796 transitions. [2021-12-06 20:27:28,582 INFO L78 Accepts]: Start accepts. Automaton has 3530 states and 4796 transitions. Word has length 197 [2021-12-06 20:27:28,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:28,583 INFO L470 AbstractCegarLoop]: Abstraction has 3530 states and 4796 transitions. [2021-12-06 20:27:28,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 6 states have internal predecessors, (83), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:27:28,583 INFO L276 IsEmpty]: Start isEmpty. Operand 3530 states and 4796 transitions. [2021-12-06 20:27:28,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-12-06 20:27:28,587 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:28,587 INFO L514 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:28,610 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2021-12-06 20:27:28,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:27:28,788 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:28,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:28,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1231154911, now seen corresponding path program 1 times [2021-12-06 20:27:28,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:27:28,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1151628446] [2021-12-06 20:27:28,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:28,793 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:27:28,793 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:27:28,794 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:27:28,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-12-06 20:27:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 1682 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-06 20:27:29,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:31,607 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:27:31,715 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 20:27:32,277 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:27:32,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 20:27:33,615 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-12-06 20:27:33,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:27:33,616 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:27:33,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1151628446] [2021-12-06 20:27:33,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1151628446] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:33,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:33,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 20:27:33,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6812920] [2021-12-06 20:27:33,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:33,617 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 20:27:33,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:27:33,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 20:27:33,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:33,618 INFO L87 Difference]: Start difference. First operand 3530 states and 4796 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:27:37,676 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:41,469 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:43,148 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:44,874 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:47,111 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 20:27:48,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:48,605 INFO L93 Difference]: Finished difference Result 7059 states and 9627 transitions. [2021-12-06 20:27:48,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:27:48,611 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 201 [2021-12-06 20:27:48,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:48,624 INFO L225 Difference]: With dead ends: 7059 [2021-12-06 20:27:48,624 INFO L226 Difference]: Without dead ends: 3574 [2021-12-06 20:27:48,630 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:27:48,631 INFO L933 BasicCegarLoop]: 718 mSDtfsCounter, 3 mSDsluCounter, 4221 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 4939 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:48,631 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 4939 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 3 Unknown, 0 Unchecked, 13.9s Time] [2021-12-06 20:27:48,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3574 states. [2021-12-06 20:27:48,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3574 to 3554. [2021-12-06 20:27:48,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3554 states, 2610 states have (on average 1.3187739463601533) internal successors, (3442), 2651 states have internal predecessors, (3442), 682 states have call successors, (682), 250 states have call predecessors, (682), 261 states have return successors, (720), 684 states have call predecessors, (720), 680 states have call successors, (720) [2021-12-06 20:27:48,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3554 states to 3554 states and 4844 transitions. [2021-12-06 20:27:48,723 INFO L78 Accepts]: Start accepts. Automaton has 3554 states and 4844 transitions. Word has length 201 [2021-12-06 20:27:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:48,723 INFO L470 AbstractCegarLoop]: Abstraction has 3554 states and 4844 transitions. [2021-12-06 20:27:48,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 6 states have internal predecessors, (85), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-06 20:27:48,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3554 states and 4844 transitions. [2021-12-06 20:27:48,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 20:27:48,727 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:48,727 INFO L514 BasicCegarLoop]: trace histogram [12, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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] [2021-12-06 20:27:48,750 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:48,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:27:48,928 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:48,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:48,928 INFO L85 PathProgramCache]: Analyzing trace with hash -2015509605, now seen corresponding path program 1 times [2021-12-06 20:27:48,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:27:48,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [829279155] [2021-12-06 20:27:48,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:48,930 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:27:48,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:27:48,930 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:27:48,931 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2021-12-06 20:27:49,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:49,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 1713 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 20:27:49,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:53,983 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2021-12-06 20:27:53,983 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:27:53,984 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:27:53,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [829279155] [2021-12-06 20:27:53,984 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [829279155] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:53,984 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:53,984 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:27:53,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521514332] [2021-12-06 20:27:53,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:53,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:27:53,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:27:53,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:27:53,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:27:53,986 INFO L87 Difference]: Start difference. First operand 3554 states and 4844 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:27:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:55,044 INFO L93 Difference]: Finished difference Result 7874 states and 10923 transitions. [2021-12-06 20:27:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:27:55,045 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 208 [2021-12-06 20:27:55,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:55,057 INFO L225 Difference]: With dead ends: 7874 [2021-12-06 20:27:55,057 INFO L226 Difference]: Without dead ends: 4365 [2021-12-06 20:27:55,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 207 GetRequests, 202 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:27:55,064 INFO L933 BasicCegarLoop]: 916 mSDtfsCounter, 151 mSDsluCounter, 4397 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 5313 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:55,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [174 Valid, 5313 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 20:27:55,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4365 states. [2021-12-06 20:27:55,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4365 to 3562. [2021-12-06 20:27:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 2618 states have (on average 1.317799847211612) internal successors, (3450), 2655 states have internal predecessors, (3450), 682 states have call successors, (682), 250 states have call predecessors, (682), 261 states have return successors, (720), 688 states have call predecessors, (720), 680 states have call successors, (720) [2021-12-06 20:27:55,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 4852 transitions. [2021-12-06 20:27:55,175 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 4852 transitions. Word has length 208 [2021-12-06 20:27:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:55,175 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 4852 transitions. [2021-12-06 20:27:55,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 2 states have call successors, (21), 2 states have call predecessors, (21), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 20:27:55,176 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 4852 transitions. [2021-12-06 20:27:55,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2021-12-06 20:27:55,179 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:55,179 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:55,206 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2021-12-06 20:27:55,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:27:55,380 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash -2101766177, now seen corresponding path program 1 times [2021-12-06 20:27:55,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:27:55,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [720846785] [2021-12-06 20:27:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:55,382 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:27:55,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:27:55,383 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:27:55,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-12-06 20:27:56,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 1699 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:27:56,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:27:57,394 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2021-12-06 20:27:57,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:27:57,395 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:27:57,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [720846785] [2021-12-06 20:27:57,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [720846785] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:57,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:57,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:27:57,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182077869] [2021-12-06 20:27:57,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:57,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:27:57,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:27:57,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:27:57,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:27:57,397 INFO L87 Difference]: Start difference. First operand 3562 states and 4852 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-06 20:27:58,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:58,602 INFO L93 Difference]: Finished difference Result 8409 states and 11791 transitions. [2021-12-06 20:27:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:27:58,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 207 [2021-12-06 20:27:58,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:58,617 INFO L225 Difference]: With dead ends: 8409 [2021-12-06 20:27:58,617 INFO L226 Difference]: Without dead ends: 4892 [2021-12-06 20:27:58,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:27:58,624 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 347 mSDsluCounter, 1626 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 2540 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:58,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 2540 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 20:27:58,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2021-12-06 20:27:58,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 3562. [2021-12-06 20:27:58,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 2618 states have (on average 1.317799847211612) internal successors, (3450), 2655 states have internal predecessors, (3450), 682 states have call successors, (682), 250 states have call predecessors, (682), 261 states have return successors, (720), 688 states have call predecessors, (720), 680 states have call successors, (720) [2021-12-06 20:27:58,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 4852 transitions. [2021-12-06 20:27:58,762 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 4852 transitions. Word has length 207 [2021-12-06 20:27:58,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:58,762 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 4852 transitions. [2021-12-06 20:27:58,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-06 20:27:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 4852 transitions. [2021-12-06 20:27:58,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 20:27:58,766 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:58,766 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:27:58,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2021-12-06 20:27:58,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:27:58,967 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:58,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:58,967 INFO L85 PathProgramCache]: Analyzing trace with hash -725021885, now seen corresponding path program 1 times [2021-12-06 20:27:58,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:27:58,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1042150412] [2021-12-06 20:27:58,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:58,969 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:27:58,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:27:58,970 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:27:58,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2021-12-06 20:27:59,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:59,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 1706 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:27:59,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:28:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2021-12-06 20:28:01,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:28:01,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-06 20:28:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1042150412] [2021-12-06 20:28:01,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1042150412] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:01,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:01,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 20:28:01,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799368659] [2021-12-06 20:28:01,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:01,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:28:01,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-06 20:28:01,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:28:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 20:28:01,022 INFO L87 Difference]: Start difference. First operand 3562 states and 4852 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-06 20:28:02,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:02,241 INFO L93 Difference]: Finished difference Result 8409 states and 11791 transitions. [2021-12-06 20:28:02,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 20:28:02,242 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) Word has length 208 [2021-12-06 20:28:02,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:02,254 INFO L225 Difference]: With dead ends: 8409 [2021-12-06 20:28:02,255 INFO L226 Difference]: Without dead ends: 4892 [2021-12-06 20:28:02,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 20:28:02,260 INFO L933 BasicCegarLoop]: 914 mSDtfsCounter, 348 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 369 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:02,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [369 Valid, 2541 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 20:28:02,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4892 states. [2021-12-06 20:28:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4892 to 3562. [2021-12-06 20:28:02,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3562 states, 2618 states have (on average 1.317799847211612) internal successors, (3450), 2655 states have internal predecessors, (3450), 682 states have call successors, (682), 250 states have call predecessors, (682), 261 states have return successors, (720), 688 states have call predecessors, (720), 680 states have call successors, (720) [2021-12-06 20:28:02,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3562 states to 3562 states and 4852 transitions. [2021-12-06 20:28:02,377 INFO L78 Accepts]: Start accepts. Automaton has 3562 states and 4852 transitions. Word has length 208 [2021-12-06 20:28:02,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:02,378 INFO L470 AbstractCegarLoop]: Abstraction has 3562 states and 4852 transitions. [2021-12-06 20:28:02,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 1 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-06 20:28:02,378 INFO L276 IsEmpty]: Start isEmpty. Operand 3562 states and 4852 transitions. [2021-12-06 20:28:02,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2021-12-06 20:28:02,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:02,382 INFO L514 BasicCegarLoop]: trace histogram [12, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:28:02,404 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2021-12-06 20:28:02,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 [2021-12-06 20:28:02,582 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:02,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:02,583 INFO L85 PathProgramCache]: Analyzing trace with hash -2065114343, now seen corresponding path program 1 times [2021-12-06 20:28:02,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-06 20:28:02,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766193116] [2021-12-06 20:28:02,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:02,584 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-06 20:28:02,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat [2021-12-06 20:28:02,585 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-06 20:28:02,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e75cdd3b-958c-4cd1-b473-c42e392a19c5/bin/uautomizer-DrprNOufMa/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2021-12-06 20:31:30,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-06 20:31:30,341 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders.