./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.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_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/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_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/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_b00668f3-8f47-4d26-a259-79abd1345af7/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 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 22:15:42,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 22:15:42,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 22:15:42,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 22:15:42,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 22:15:42,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 22:15:42,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 22:15:42,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 22:15:42,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 22:15:42,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 22:15:42,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 22:15:42,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 22:15:42,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 22:15:42,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 22:15:42,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 22:15:42,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 22:15:42,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 22:15:42,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 22:15:42,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 22:15:42,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 22:15:42,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 22:15:42,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 22:15:42,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 22:15:42,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 22:15:42,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 22:15:42,972 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 22:15:42,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 22:15:42,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 22:15:42,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 22:15:42,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 22:15:42,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 22:15:42,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 22:15:42,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 22:15:42,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 22:15:42,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 22:15:42,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 22:15:42,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 22:15:42,979 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 22:15:42,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 22:15:42,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 22:15:42,981 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 22:15:42,982 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 22:15:42,999 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 22:15:42,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 22:15:42,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 22:15:42,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 22:15:43,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 22:15:43,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 22:15:43,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 22:15:43,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 22:15:43,001 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 22:15:43,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 22:15:43,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 22:15:43,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 22:15:43,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 22:15:43,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 22:15:43,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 22:15:43,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 22:15:43,002 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 22:15:43,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 22:15:43,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 22:15:43,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 22:15:43,002 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 22:15:43,002 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:15:43,002 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 22:15:43,002 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 22:15:43,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 22:15:43,003 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 22:15:43,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 22:15:43,003 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 22:15:43,003 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 22:15:43,003 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 22:15:43,003 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 22:15:43,003 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_b00668f3-8f47-4d26-a259-79abd1345af7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4d59f12bf134f1df229541fa7d7be9025273d18d299c01e889ca23a568445b7a [2021-12-06 22:15:43,183 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 22:15:43,198 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 22:15:43,200 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 22:15:43,201 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 22:15:43,201 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 22:15:43,202 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-12-06 22:15:43,243 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/data/a0fb7711e/ae03c8c164084cf88905bd71dafa7b2b/FLAG0fd8201b6 [2021-12-06 22:15:43,813 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 22:15:43,813 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-12-06 22:15:43,838 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/data/a0fb7711e/ae03c8c164084cf88905bd71dafa7b2b/FLAG0fd8201b6 [2021-12-06 22:15:44,295 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/data/a0fb7711e/ae03c8c164084cf88905bd71dafa7b2b [2021-12-06 22:15:44,302 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 22:15:44,304 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 22:15:44,306 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 22:15:44,307 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 22:15:44,311 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 22:15:44,312 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:15:44" (1/1) ... [2021-12-06 22:15:44,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49a6e3e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:44, skipping insertion in model container [2021-12-06 22:15:44,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 10:15:44" (1/1) ... [2021-12-06 22:15:44,317 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 22:15:44,390 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 22:15:45,348 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_b00668f3-8f47-4d26-a259-79abd1345af7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2021-12-06 22:15:45,383 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:15:45,408 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 22:15:45,605 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_b00668f3-8f47-4d26-a259-79abd1345af7/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i[216842,216855] [2021-12-06 22:15:45,613 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 22:15:45,671 INFO L208 MainTranslator]: Completed translation [2021-12-06 22:15:45,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45 WrapperNode [2021-12-06 22:15:45,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 22:15:45,672 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 22:15:45,672 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 22:15:45,672 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 22:15:45,678 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,821 INFO L137 Inliner]: procedures = 205, calls = 1417, calls flagged for inlining = 89, calls inlined = 83, statements flattened = 3287 [2021-12-06 22:15:45,821 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 22:15:45,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 22:15:45,822 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 22:15:45,822 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 22:15:45,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,907 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 22:15:45,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 22:15:45,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 22:15:45,957 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 22:15:45,957 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (1/1) ... [2021-12-06 22:15:45,963 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 22:15:45,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:15:45,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 22:15:45,983 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 22:15:46,025 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_intfdata [2021-12-06 22:15:46,025 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_intfdata [2021-12-06 22:15:46,025 INFO L130 BoogieDeclarations]: Found specification of procedure uas_zap_pending [2021-12-06 22:15:46,025 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_zap_pending [2021-12-06 22:15:46,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 22:15:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 22:15:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 22:15:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 22:15:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 22:15:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 22:15:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_interface [2021-12-06 22:15:46,026 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_interface [2021-12-06 22:15:46,026 INFO L130 BoogieDeclarations]: Found specification of procedure uas_alloc_data_urb [2021-12-06 22:15:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_alloc_data_urb [2021-12-06 22:15:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-06 22:15:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-06 22:15:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 22:15:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 22:15:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-06 22:15:46,027 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-06 22:15:46,027 INFO L130 BoogieDeclarations]: Found specification of procedure usb_fill_bulk_urb [2021-12-06 22:15:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_fill_bulk_urb [2021-12-06 22:15:46,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 22:15:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 22:15:46,028 INFO L130 BoogieDeclarations]: Found specification of procedure uas_add_work [2021-12-06 22:15:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_add_work [2021-12-06 22:15:46,028 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2021-12-06 22:15:46,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2021-12-06 22:15:46,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 22:15:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 22:15:46,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 22:15:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 22:15:46,029 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_endpoints [2021-12-06 22:15:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_endpoints [2021-12-06 22:15:46,029 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 22:15:46,029 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 22:15:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure uas_log_cmd_state [2021-12-06 22:15:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_log_cmd_state [2021-12-06 22:15:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 22:15:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 22:15:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 22:15:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unlink_urb [2021-12-06 22:15:46,030 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unlink_urb [2021-12-06 22:15:46,030 INFO L130 BoogieDeclarations]: Found specification of procedure usb_get_urb [2021-12-06 22:15:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_get_urb [2021-12-06 22:15:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 22:15:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_num [2021-12-06 22:15:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_num [2021-12-06 22:15:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-06 22:15:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-06 22:15:46,031 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 22:15:46,031 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 22:15:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure uas_xfer_data [2021-12-06 22:15:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_xfer_data [2021-12-06 22:15:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2021-12-06 22:15:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2021-12-06 22:15:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure usb_wait_anchor_empty_timeout [2021-12-06 22:15:46,032 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_wait_anchor_empty_timeout [2021-12-06 22:15:46,032 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 22:15:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 22:15:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure uas_try_complete [2021-12-06 22:15:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_try_complete [2021-12-06 22:15:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_report_bus_reset [2021-12-06 22:15:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_report_bus_reset [2021-12-06 22:15:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 22:15:46,033 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 22:15:46,033 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-06 22:15:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-06 22:15:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-06 22:15:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-06 22:15:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure uas_wait_for_pending_cmnds [2021-12-06 22:15:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_wait_for_pending_cmnds [2021-12-06 22:15:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2021-12-06 22:15:46,034 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2021-12-06 22:15:46,034 INFO L130 BoogieDeclarations]: Found specification of procedure usb_set_intfdata [2021-12-06 22:15:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_set_intfdata [2021-12-06 22:15:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 22:15:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure uas_data_cmplt [2021-12-06 22:15:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_data_cmplt [2021-12-06 22:15:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 22:15:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 22:15:46,035 INFO L130 BoogieDeclarations]: Found specification of procedure __be16_to_cpup [2021-12-06 22:15:46,035 INFO L138 BoogieDeclarations]: Found implementation of procedure __be16_to_cpup [2021-12-06 22:15:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 22:15:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure uas_shutdown [2021-12-06 22:15:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_shutdown [2021-12-06 22:15:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 22:15:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure uas_do_work [2021-12-06 22:15:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_do_work [2021-12-06 22:15:46,036 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 22:15:46,036 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 22:15:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2021-12-06 22:15:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2021-12-06 22:15:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_urb [2021-12-06 22:15:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_urb [2021-12-06 22:15:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-06 22:15:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-06 22:15:46,037 INFO L130 BoogieDeclarations]: Found specification of procedure uas_disconnect [2021-12-06 22:15:46,037 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_disconnect [2021-12-06 22:15:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure usb_kill_anchored_urbs [2021-12-06 22:15:46,038 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_kill_anchored_urbs [2021-12-06 22:15:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure init_usb_anchor [2021-12-06 22:15:46,038 INFO L138 BoogieDeclarations]: Found implementation of procedure init_usb_anchor [2021-12-06 22:15:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 22:15:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure usb_pipe_endpoint [2021-12-06 22:15:46,038 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_pipe_endpoint [2021-12-06 22:15:46,038 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_out [2021-12-06 22:15:46,039 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_out [2021-12-06 22:15:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 22:15:46,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 22:15:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 22:15:46,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 22:15:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure uas_stat_cmplt [2021-12-06 22:15:46,039 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_stat_cmplt [2021-12-06 22:15:46,039 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 22:15:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 22:15:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 22:15:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 22:15:46,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 22:15:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2021-12-06 22:15:46,040 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2021-12-06 22:15:46,040 INFO L130 BoogieDeclarations]: Found specification of procedure uas_configure_endpoints [2021-12-06 22:15:46,040 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_configure_endpoints [2021-12-06 22:15:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure usb_free_urb [2021-12-06 22:15:46,041 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_free_urb [2021-12-06 22:15:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_unsubmitted_urbs [2021-12-06 22:15:46,041 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_unsubmitted_urbs [2021-12-06 22:15:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure uas_find_uas_alt_setting [2021-12-06 22:15:46,041 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_find_uas_alt_setting [2021-12-06 22:15:46,041 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-06 22:15:46,041 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-06 22:15:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2021-12-06 22:15:46,042 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2021-12-06 22:15:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-06 22:15:46,042 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-06 22:15:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure lock_is_held [2021-12-06 22:15:46,042 INFO L138 BoogieDeclarations]: Found implementation of procedure lock_is_held [2021-12-06 22:15:46,042 INFO L130 BoogieDeclarations]: Found specification of procedure uas_submit_urbs [2021-12-06 22:15:46,042 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_submit_urbs [2021-12-06 22:15:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure usb_reset_device [2021-12-06 22:15:46,043 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_reset_device [2021-12-06 22:15:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2021-12-06 22:15:46,043 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2021-12-06 22:15:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 22:15:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure uas_free_streams [2021-12-06 22:15:46,043 INFO L138 BoogieDeclarations]: Found implementation of procedure uas_free_streams [2021-12-06 22:15:46,043 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2021-12-06 22:15:46,043 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2021-12-06 22:15:46,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 22:15:46,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 22:15:46,404 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 22:15:46,406 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 22:15:46,582 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 22:15:48,554 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 22:15:48,570 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 22:15:48,570 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 22:15:48,574 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:15:48 BoogieIcfgContainer [2021-12-06 22:15:48,574 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 22:15:48,576 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 22:15:48,576 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 22:15:48,579 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 22:15:48,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 10:15:44" (1/3) ... [2021-12-06 22:15:48,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52760971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:15:48, skipping insertion in model container [2021-12-06 22:15:48,580 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 10:15:45" (2/3) ... [2021-12-06 22:15:48,580 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52760971 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 10:15:48, skipping insertion in model container [2021-12-06 22:15:48,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 10:15:48" (3/3) ... [2021-12-06 22:15:48,582 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--storage--uas.ko-entry_point.cil.out.i [2021-12-06 22:15:48,587 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 22:15:48,587 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 22:15:48,628 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 22:15:48,633 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 22:15:48,633 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 22:15:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand has 1052 states, 741 states have (on average 1.3454790823211875) internal successors, (997), 774 states have internal predecessors, (997), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) [2021-12-06 22:15:48,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 22:15:48,680 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:48,680 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:15:48,681 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:48,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:48,685 INFO L85 PathProgramCache]: Analyzing trace with hash 2128821877, now seen corresponding path program 1 times [2021-12-06 22:15:48,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:48,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390894691] [2021-12-06 22:15:48,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:48,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:15:49,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:15:49,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:15:49,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:49,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:15:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:15:49,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:15:49,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:15:49,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:15:49,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:15:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:15:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:49,275 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 22:15:49,276 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:49,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390894691] [2021-12-06 22:15:49,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390894691] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:49,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:49,277 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 22:15:49,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88541071] [2021-12-06 22:15:49,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:49,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 22:15:49,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:49,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 22:15:49,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-06 22:15:49,306 INFO L87 Difference]: Start difference. First operand has 1052 states, 741 states have (on average 1.3454790823211875) internal successors, (997), 774 states have internal predecessors, (997), 243 states have call successors, (243), 67 states have call predecessors, (243), 66 states have return successors, (238), 230 states have call predecessors, (238), 238 states have call successors, (238) Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:15:52,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:52,051 INFO L93 Difference]: Finished difference Result 2450 states and 3620 transitions. [2021-12-06 22:15:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 22:15:52,053 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2021-12-06 22:15:52,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:52,081 INFO L225 Difference]: With dead ends: 2450 [2021-12-06 22:15:52,081 INFO L226 Difference]: Without dead ends: 1387 [2021-12-06 22:15:52,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:15:52,097 INFO L933 BasicCegarLoop]: 1237 mSDtfsCounter, 1842 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 1570 mSolverCounterSat, 1365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1908 SdHoareTripleChecker+Valid, 2624 SdHoareTripleChecker+Invalid, 2935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1365 IncrementalHoareTripleChecker+Valid, 1570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:52,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1908 Valid, 2624 Invalid, 2935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1365 Valid, 1570 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 22:15:52,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1387 states. [2021-12-06 22:15:52,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1387 to 1036. [2021-12-06 22:15:52,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1036 states, 732 states have (on average 1.3374316939890711) internal successors, (979), 758 states have internal predecessors, (979), 238 states have call successors, (238), 66 states have call predecessors, (238), 65 states have return successors, (237), 229 states have call predecessors, (237), 237 states have call successors, (237) [2021-12-06 22:15:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1036 states to 1036 states and 1454 transitions. [2021-12-06 22:15:52,213 INFO L78 Accepts]: Start accepts. Automaton has 1036 states and 1454 transitions. Word has length 99 [2021-12-06 22:15:52,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:52,214 INFO L470 AbstractCegarLoop]: Abstraction has 1036 states and 1454 transitions. [2021-12-06 22:15:52,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 2 states have internal predecessors, (49), 2 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:15:52,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1036 states and 1454 transitions. [2021-12-06 22:15:52,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-12-06 22:15:52,220 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:52,220 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 22:15:52,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 22:15:52,221 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:52,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:52,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1846074270, now seen corresponding path program 1 times [2021-12-06 22:15:52,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:52,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186088047] [2021-12-06 22:15:52,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:52,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:52,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:15:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:52,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:15:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:15:52,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:52,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:15:52,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:15:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:15:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:15:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-06 22:15:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 22:15:52,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-06 22:15:52,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 22:15:52,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:52,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186088047] [2021-12-06 22:15:52,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186088047] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:52,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:52,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:15:52,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152338694] [2021-12-06 22:15:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:52,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:15:52,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:15:52,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:15:52,571 INFO L87 Difference]: Start difference. First operand 1036 states and 1454 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:15:56,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:15:56,407 INFO L93 Difference]: Finished difference Result 3777 states and 5583 transitions. [2021-12-06 22:15:56,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:15:56,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 100 [2021-12-06 22:15:56,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:15:56,432 INFO L225 Difference]: With dead ends: 3777 [2021-12-06 22:15:56,432 INFO L226 Difference]: Without dead ends: 2754 [2021-12-06 22:15:56,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:15:56,440 INFO L933 BasicCegarLoop]: 1381 mSDtfsCounter, 5905 mSDsluCounter, 1980 mSDsCounter, 0 mSdLazyCounter, 2472 mSolverCounterSat, 4037 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6082 SdHoareTripleChecker+Valid, 3361 SdHoareTripleChecker+Invalid, 6509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4037 IncrementalHoareTripleChecker+Valid, 2472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:15:56,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6082 Valid, 3361 Invalid, 6509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4037 Valid, 2472 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2021-12-06 22:15:56,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2754 states. [2021-12-06 22:15:56,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2754 to 2112. [2021-12-06 22:15:56,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1487 states have (on average 1.3375924680564897) internal successors, (1989), 1548 states have internal predecessors, (1989), 487 states have call successors, (487), 131 states have call predecessors, (487), 137 states have return successors, (530), 473 states have call predecessors, (530), 486 states have call successors, (530) [2021-12-06 22:15:56,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3006 transitions. [2021-12-06 22:15:56,596 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3006 transitions. Word has length 100 [2021-12-06 22:15:56,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:15:56,597 INFO L470 AbstractCegarLoop]: Abstraction has 2112 states and 3006 transitions. [2021-12-06 22:15:56,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:15:56,597 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3006 transitions. [2021-12-06 22:15:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-12-06 22:15:56,601 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:15:56,601 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:15:56,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 22:15:56,602 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:15:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:15:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1251703727, now seen corresponding path program 1 times [2021-12-06 22:15:56,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:15:56,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539898929] [2021-12-06 22:15:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:15:56,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:15:56,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:15:56,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:15:56,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:15:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:56,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:15:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:15:56,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:15:56,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:15:56,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:15:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:15:56,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 22:15:56,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:15:56,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:15:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 22:15:56,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:15:56,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539898929] [2021-12-06 22:15:56,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539898929] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:15:56,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:15:56,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:15:56,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56953656] [2021-12-06 22:15:56,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:15:56,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:15:56,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:15:56,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:15:56,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:15:56,850 INFO L87 Difference]: Start difference. First operand 2112 states and 3006 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:16:00,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:00,542 INFO L93 Difference]: Finished difference Result 6210 states and 9245 transitions. [2021-12-06 22:16:00,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:16:00,542 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2021-12-06 22:16:00,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:00,565 INFO L225 Difference]: With dead ends: 6210 [2021-12-06 22:16:00,566 INFO L226 Difference]: Without dead ends: 4111 [2021-12-06 22:16:00,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:16:00,574 INFO L933 BasicCegarLoop]: 1389 mSDtfsCounter, 5942 mSDsluCounter, 1974 mSDsCounter, 0 mSdLazyCounter, 2461 mSolverCounterSat, 4018 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6122 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 6479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4018 IncrementalHoareTripleChecker+Valid, 2461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:00,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6122 Valid, 3363 Invalid, 6479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4018 Valid, 2461 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2021-12-06 22:16:00,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2021-12-06 22:16:00,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 3183. [2021-12-06 22:16:00,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3183 states, 2239 states have (on average 1.3363108530594014) internal successors, (2992), 2335 states have internal predecessors, (2992), 734 states have call successors, (734), 196 states have call predecessors, (734), 209 states have return successors, (841), 715 states have call predecessors, (841), 733 states have call successors, (841) [2021-12-06 22:16:00,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3183 states to 3183 states and 4567 transitions. [2021-12-06 22:16:00,735 INFO L78 Accepts]: Start accepts. Automaton has 3183 states and 4567 transitions. Word has length 99 [2021-12-06 22:16:00,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:00,736 INFO L470 AbstractCegarLoop]: Abstraction has 3183 states and 4567 transitions. [2021-12-06 22:16:00,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:16:00,736 INFO L276 IsEmpty]: Start isEmpty. Operand 3183 states and 4567 transitions. [2021-12-06 22:16:00,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-12-06 22:16:00,738 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:00,738 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 22:16:00,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 22:16:00,738 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:00,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:00,739 INFO L85 PathProgramCache]: Analyzing trace with hash 228944921, now seen corresponding path program 1 times [2021-12-06 22:16:00,739 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:00,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319960123] [2021-12-06 22:16:00,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:00,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:00,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:00,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:16:00,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:16:00,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:00,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:00,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:16:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:01,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 22:16:01,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:01,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-06 22:16:01,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:01,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 22:16:01,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:01,020 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 22:16:01,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:01,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319960123] [2021-12-06 22:16:01,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319960123] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:01,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:01,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:16:01,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755304727] [2021-12-06 22:16:01,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:01,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:16:01,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:01,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:16:01,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:16:01,022 INFO L87 Difference]: Start difference. First operand 3183 states and 4567 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:16:04,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:04,520 INFO L93 Difference]: Finished difference Result 8579 states and 12839 transitions. [2021-12-06 22:16:04,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:16:04,520 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2021-12-06 22:16:04,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:04,549 INFO L225 Difference]: With dead ends: 8579 [2021-12-06 22:16:04,549 INFO L226 Difference]: Without dead ends: 5409 [2021-12-06 22:16:04,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:16:04,559 INFO L933 BasicCegarLoop]: 1344 mSDtfsCounter, 5767 mSDsluCounter, 1932 mSDsCounter, 0 mSdLazyCounter, 2400 mSolverCounterSat, 3946 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5945 SdHoareTripleChecker+Valid, 3276 SdHoareTripleChecker+Invalid, 6346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3946 IncrementalHoareTripleChecker+Valid, 2400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:04,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5945 Valid, 3276 Invalid, 6346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3946 Valid, 2400 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2021-12-06 22:16:04,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5409 states. [2021-12-06 22:16:04,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5409 to 4238. [2021-12-06 22:16:04,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 2980 states have (on average 1.3355704697986577) internal successors, (3980), 3111 states have internal predecessors, (3980), 979 states have call successors, (979), 261 states have call predecessors, (979), 278 states have return successors, (1161), 950 states have call predecessors, (1161), 978 states have call successors, (1161) [2021-12-06 22:16:04,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 6120 transitions. [2021-12-06 22:16:04,771 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 6120 transitions. Word has length 98 [2021-12-06 22:16:04,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:04,772 INFO L470 AbstractCegarLoop]: Abstraction has 4238 states and 6120 transitions. [2021-12-06 22:16:04,772 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, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:16:04,772 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 6120 transitions. [2021-12-06 22:16:04,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-06 22:16:04,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:04,774 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 22:16:04,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 22:16:04,774 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:04,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:04,774 INFO L85 PathProgramCache]: Analyzing trace with hash 463493016, now seen corresponding path program 1 times [2021-12-06 22:16:04,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:04,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415305158] [2021-12-06 22:16:04,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:04,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:04,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:16:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:04,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:04,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:16:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:04,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:04,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:16:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:16:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 22:16:04,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-06 22:16:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:04,980 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-06 22:16:04,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:04,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415305158] [2021-12-06 22:16:04,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415305158] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:04,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:04,980 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:16:04,980 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126308429] [2021-12-06 22:16:04,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:04,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:16:04,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:04,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:16:04,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:16:04,982 INFO L87 Difference]: Start difference. First operand 4238 states and 6120 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:16:09,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:09,190 INFO L93 Difference]: Finished difference Result 10954 states and 16567 transitions. [2021-12-06 22:16:09,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:16:09,191 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 101 [2021-12-06 22:16:09,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:09,225 INFO L225 Difference]: With dead ends: 10954 [2021-12-06 22:16:09,226 INFO L226 Difference]: Without dead ends: 6729 [2021-12-06 22:16:09,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:16:09,239 INFO L933 BasicCegarLoop]: 1334 mSDtfsCounter, 4939 mSDsluCounter, 2308 mSDsCounter, 0 mSdLazyCounter, 3059 mSolverCounterSat, 3219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5117 SdHoareTripleChecker+Valid, 3642 SdHoareTripleChecker+Invalid, 6278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3219 IncrementalHoareTripleChecker+Valid, 3059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:09,240 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5117 Valid, 3642 Invalid, 6278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3219 Valid, 3059 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 22:16:09,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6729 states. [2021-12-06 22:16:09,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6729 to 5287. [2021-12-06 22:16:09,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5287 states, 3719 states have (on average 1.3344985211078246) internal successors, (4963), 3883 states have internal predecessors, (4963), 1219 states have call successors, (1219), 326 states have call predecessors, (1219), 348 states have return successors, (1479), 1185 states have call predecessors, (1479), 1218 states have call successors, (1479) [2021-12-06 22:16:09,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5287 states to 5287 states and 7661 transitions. [2021-12-06 22:16:09,474 INFO L78 Accepts]: Start accepts. Automaton has 5287 states and 7661 transitions. Word has length 101 [2021-12-06 22:16:09,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:09,474 INFO L470 AbstractCegarLoop]: Abstraction has 5287 states and 7661 transitions. [2021-12-06 22:16:09,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (13), 6 states have call predecessors, (13), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 22:16:09,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5287 states and 7661 transitions. [2021-12-06 22:16:09,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 22:16:09,478 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:09,478 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-06 22:16:09,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 22:16:09,479 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:09,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:09,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1942040466, now seen corresponding path program 1 times [2021-12-06 22:16:09,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:09,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933755127] [2021-12-06 22:16:09,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:09,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:09,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:09,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:09,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:09,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:16:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:16:09,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:09,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:09,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:16:09,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 22:16:09,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:16:09,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:16:09,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:16:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:16:09,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-12-06 22:16:09,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933755127] [2021-12-06 22:16:09,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933755127] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:09,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:09,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:16:09,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677526762] [2021-12-06 22:16:09,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:09,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:16:09,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:09,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:16:09,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:16:09,744 INFO L87 Difference]: Start difference. First operand 5287 states and 7661 transitions. Second operand has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:16:16,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:16,058 INFO L93 Difference]: Finished difference Result 18093 states and 27164 transitions. [2021-12-06 22:16:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:16:16,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 118 [2021-12-06 22:16:16,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:16,118 INFO L225 Difference]: With dead ends: 18093 [2021-12-06 22:16:16,119 INFO L226 Difference]: Without dead ends: 12819 [2021-12-06 22:16:16,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:16:16,137 INFO L933 BasicCegarLoop]: 1795 mSDtfsCounter, 3384 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 4198 mSolverCounterSat, 2440 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3541 SdHoareTripleChecker+Valid, 4847 SdHoareTripleChecker+Invalid, 6638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2440 IncrementalHoareTripleChecker+Valid, 4198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:16,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3541 Valid, 4847 Invalid, 6638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2440 Valid, 4198 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2021-12-06 22:16:16,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12819 states. [2021-12-06 22:16:16,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12819 to 10377. [2021-12-06 22:16:16,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10377 states, 7297 states have (on average 1.3299986295737976) internal successors, (9705), 7623 states have internal predecessors, (9705), 2378 states have call successors, (2378), 636 states have call predecessors, (2378), 701 states have return successors, (3125), 2314 states have call predecessors, (3125), 2377 states have call successors, (3125) [2021-12-06 22:16:16,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10377 states to 10377 states and 15208 transitions. [2021-12-06 22:16:16,612 INFO L78 Accepts]: Start accepts. Automaton has 10377 states and 15208 transitions. Word has length 118 [2021-12-06 22:16:16,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:16,612 INFO L470 AbstractCegarLoop]: Abstraction has 10377 states and 15208 transitions. [2021-12-06 22:16:16,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.571428571428571) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-06 22:16:16,612 INFO L276 IsEmpty]: Start isEmpty. Operand 10377 states and 15208 transitions. [2021-12-06 22:16:16,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2021-12-06 22:16:16,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:16,618 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:16:16,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 22:16:16,618 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:16,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:16,618 INFO L85 PathProgramCache]: Analyzing trace with hash 532316594, now seen corresponding path program 1 times [2021-12-06 22:16:16,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:16,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677564475] [2021-12-06 22:16:16,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:16,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:16,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:16,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:16,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:16:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:16,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:16,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:16:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:16,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:16,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:16:16,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:16:16,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 22:16:16,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 22:16:16,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 22:16:16,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-06 22:16:16,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 22:16:16,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:16:16,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 22:16:16,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 22:16:16,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:16:16,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-06 22:16:16,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 22:16:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 22:16:16,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:16,982 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-06 22:16:16,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:16,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677564475] [2021-12-06 22:16:16,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677564475] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:16,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:16,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:16:16,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974972179] [2021-12-06 22:16:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:16,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:16:16,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:16,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:16:16,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:16:16,984 INFO L87 Difference]: Start difference. First operand 10377 states and 15208 transitions. Second operand has 9 states, 8 states have (on average 13.625) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:16:22,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:22,908 INFO L93 Difference]: Finished difference Result 35884 states and 55682 transitions. [2021-12-06 22:16:22,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-06 22:16:22,909 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) Word has length 198 [2021-12-06 22:16:22,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:23,003 INFO L225 Difference]: With dead ends: 35884 [2021-12-06 22:16:23,004 INFO L226 Difference]: Without dead ends: 25520 [2021-12-06 22:16:23,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:16:23,034 INFO L933 BasicCegarLoop]: 1939 mSDtfsCounter, 4605 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 4403 mSolverCounterSat, 4035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4784 SdHoareTripleChecker+Valid, 4159 SdHoareTripleChecker+Invalid, 8438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4035 IncrementalHoareTripleChecker+Valid, 4403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:23,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4784 Valid, 4159 Invalid, 8438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4035 Valid, 4403 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2021-12-06 22:16:23,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25520 states. [2021-12-06 22:16:23,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25520 to 19990. [2021-12-06 22:16:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19990 states, 13885 states have (on average 1.3217861001080302) internal successors, (18353), 14551 states have internal predecessors, (18353), 4741 states have call successors, (4741), 1108 states have call predecessors, (4741), 1363 states have return successors, (7045), 4732 states have call predecessors, (7045), 4740 states have call successors, (7045) [2021-12-06 22:16:24,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19990 states to 19990 states and 30139 transitions. [2021-12-06 22:16:24,086 INFO L78 Accepts]: Start accepts. Automaton has 19990 states and 30139 transitions. Word has length 198 [2021-12-06 22:16:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:24,086 INFO L470 AbstractCegarLoop]: Abstraction has 19990 states and 30139 transitions. [2021-12-06 22:16:24,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 13.625) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (20), 2 states have call predecessors, (20), 3 states have call successors, (20) [2021-12-06 22:16:24,086 INFO L276 IsEmpty]: Start isEmpty. Operand 19990 states and 30139 transitions. [2021-12-06 22:16:24,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2021-12-06 22:16:24,094 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:24,094 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:24,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 22:16:24,094 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:24,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:24,095 INFO L85 PathProgramCache]: Analyzing trace with hash -554351643, now seen corresponding path program 1 times [2021-12-06 22:16:24,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:24,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762495154] [2021-12-06 22:16:24,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:24,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:24,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:24,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:24,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:24,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:16:24,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:24,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:24,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:16:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:24,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:24,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:16:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:16:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:24,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:16:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:16:24,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:16:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:16:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:16:24,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:16:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:16:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:16:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:16:24,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 22:16:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2021-12-06 22:16:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2021-12-06 22:16:24,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 22:16:24,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:24,438 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 22:16:24,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:24,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762495154] [2021-12-06 22:16:24,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762495154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:24,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:24,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:16:24,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527387333] [2021-12-06 22:16:24,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:24,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:16:24,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:24,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:16:24,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:16:24,439 INFO L87 Difference]: Start difference. First operand 19990 states and 30139 transitions. Second operand has 9 states, 8 states have (on average 15.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:16:29,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:29,568 INFO L93 Difference]: Finished difference Result 45483 states and 70589 transitions. [2021-12-06 22:16:29,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 22:16:29,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 227 [2021-12-06 22:16:29,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:29,694 INFO L225 Difference]: With dead ends: 45483 [2021-12-06 22:16:29,694 INFO L226 Difference]: Without dead ends: 25507 [2021-12-06 22:16:29,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2021-12-06 22:16:29,740 INFO L933 BasicCegarLoop]: 1229 mSDtfsCounter, 2927 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 3582 mSolverCounterSat, 2204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3021 SdHoareTripleChecker+Valid, 3420 SdHoareTripleChecker+Invalid, 5786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2204 IncrementalHoareTripleChecker+Valid, 3582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:29,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3021 Valid, 3420 Invalid, 5786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2204 Valid, 3582 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 22:16:29,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25507 states. [2021-12-06 22:16:30,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25507 to 19990. [2021-12-06 22:16:30,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19990 states, 13885 states have (on average 1.3210658984515664) internal successors, (18343), 14551 states have internal predecessors, (18343), 4741 states have call successors, (4741), 1108 states have call predecessors, (4741), 1363 states have return successors, (7045), 4732 states have call predecessors, (7045), 4740 states have call successors, (7045) [2021-12-06 22:16:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19990 states to 19990 states and 30129 transitions. [2021-12-06 22:16:30,715 INFO L78 Accepts]: Start accepts. Automaton has 19990 states and 30129 transitions. Word has length 227 [2021-12-06 22:16:30,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:30,716 INFO L470 AbstractCegarLoop]: Abstraction has 19990 states and 30129 transitions. [2021-12-06 22:16:30,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 15.0) internal successors, (120), 3 states have internal predecessors, (120), 3 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:16:30,716 INFO L276 IsEmpty]: Start isEmpty. Operand 19990 states and 30129 transitions. [2021-12-06 22:16:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-06 22:16:30,721 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:30,722 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:30,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 22:16:30,722 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:30,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:30,722 INFO L85 PathProgramCache]: Analyzing trace with hash 926426266, now seen corresponding path program 1 times [2021-12-06 22:16:30,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:30,722 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873096134] [2021-12-06 22:16:30,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:30,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:30,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:30,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:16:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:30,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:30,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:16:30,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:30,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:16:30,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:16:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:16:30,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:16:30,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:16:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 22:16:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:16:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 22:16:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:16:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:30,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-06 22:16:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 22:16:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 22:16:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 22:16:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:31,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-06 22:16:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:31,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 22:16:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:31,010 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-06 22:16:31,010 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:31,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873096134] [2021-12-06 22:16:31,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873096134] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:31,011 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:31,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:16:31,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676136378] [2021-12-06 22:16:31,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:31,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:16:31,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:31,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:16:31,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:16:31,012 INFO L87 Difference]: Start difference. First operand 19990 states and 30129 transitions. Second operand has 10 states, 9 states have (on average 13.0) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:16:37,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:37,530 INFO L93 Difference]: Finished difference Result 50453 states and 80227 transitions. [2021-12-06 22:16:37,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:16:37,531 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 13.0) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) Word has length 222 [2021-12-06 22:16:37,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:37,634 INFO L225 Difference]: With dead ends: 50453 [2021-12-06 22:16:37,634 INFO L226 Difference]: Without dead ends: 30487 [2021-12-06 22:16:37,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:16:37,682 INFO L933 BasicCegarLoop]: 1690 mSDtfsCounter, 3201 mSDsluCounter, 5066 mSDsCounter, 0 mSdLazyCounter, 5622 mSolverCounterSat, 2185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3374 SdHoareTripleChecker+Valid, 6756 SdHoareTripleChecker+Invalid, 7807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2185 IncrementalHoareTripleChecker+Valid, 5622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:37,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3374 Valid, 6756 Invalid, 7807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2185 Valid, 5622 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-06 22:16:37,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30487 states. [2021-12-06 22:16:38,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30487 to 20010. [2021-12-06 22:16:38,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20010 states, 13905 states have (on average 1.320604099244876) internal successors, (18363), 14571 states have internal predecessors, (18363), 4741 states have call successors, (4741), 1108 states have call predecessors, (4741), 1363 states have return successors, (7045), 4732 states have call predecessors, (7045), 4740 states have call successors, (7045) [2021-12-06 22:16:38,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20010 states to 20010 states and 30149 transitions. [2021-12-06 22:16:38,827 INFO L78 Accepts]: Start accepts. Automaton has 20010 states and 30149 transitions. Word has length 222 [2021-12-06 22:16:38,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:38,827 INFO L470 AbstractCegarLoop]: Abstraction has 20010 states and 30149 transitions. [2021-12-06 22:16:38,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 13.0) internal successors, (117), 4 states have internal predecessors, (117), 3 states have call successors, (24), 8 states have call predecessors, (24), 1 states have return successors, (21), 2 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:16:38,827 INFO L276 IsEmpty]: Start isEmpty. Operand 20010 states and 30149 transitions. [2021-12-06 22:16:38,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-12-06 22:16:38,834 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:38,834 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:38,834 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 22:16:38,835 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:38,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:38,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1487912112, now seen corresponding path program 1 times [2021-12-06 22:16:38,835 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:38,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885029160] [2021-12-06 22:16:38,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:38,835 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:38,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:38,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:39,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:39,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:16:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:16:39,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:16:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:16:39,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:39,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 22:16:39,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 22:16:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 22:16:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 22:16:39,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 22:16:39,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 22:16:39,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 22:16:39,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-06 22:16:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-06 22:16:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 22:16:39,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-06 22:16:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 22:16:39,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-06 22:16:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-06 22:16:39,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:39,166 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-12-06 22:16:39,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:39,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885029160] [2021-12-06 22:16:39,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885029160] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:39,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:39,167 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 22:16:39,167 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523759558] [2021-12-06 22:16:39,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:39,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 22:16:39,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:39,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 22:16:39,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 22:16:39,169 INFO L87 Difference]: Start difference. First operand 20010 states and 30149 transitions. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:16:44,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:44,965 INFO L93 Difference]: Finished difference Result 54292 states and 83267 transitions. [2021-12-06 22:16:44,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:16:44,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 243 [2021-12-06 22:16:44,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:45,070 INFO L225 Difference]: With dead ends: 54292 [2021-12-06 22:16:45,071 INFO L226 Difference]: Without dead ends: 34306 [2021-12-06 22:16:45,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 22:16:45,120 INFO L933 BasicCegarLoop]: 2021 mSDtfsCounter, 3175 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 3411 mSolverCounterSat, 2247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3351 SdHoareTripleChecker+Valid, 4748 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2247 IncrementalHoareTripleChecker+Valid, 3411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:45,120 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3351 Valid, 4748 Invalid, 5658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2247 Valid, 3411 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2021-12-06 22:16:45,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34306 states. [2021-12-06 22:16:46,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34306 to 29171. [2021-12-06 22:16:46,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29171 states, 20271 states have (on average 1.3199151497212767) internal successors, (26756), 21244 states have internal predecessors, (26756), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 1995 states have return successors, (10274), 6896 states have call predecessors, (10274), 6903 states have call successors, (10274) [2021-12-06 22:16:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29171 states to 29171 states and 43934 transitions. [2021-12-06 22:16:46,589 INFO L78 Accepts]: Start accepts. Automaton has 29171 states and 43934 transitions. Word has length 243 [2021-12-06 22:16:46,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:46,590 INFO L470 AbstractCegarLoop]: Abstraction has 29171 states and 43934 transitions. [2021-12-06 22:16:46,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 3 states have internal predecessors, (140), 3 states have call successors, (29), 6 states have call predecessors, (29), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2021-12-06 22:16:46,590 INFO L276 IsEmpty]: Start isEmpty. Operand 29171 states and 43934 transitions. [2021-12-06 22:16:46,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-06 22:16:46,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:46,598 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:46,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 22:16:46,598 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:46,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:46,598 INFO L85 PathProgramCache]: Analyzing trace with hash 438532658, now seen corresponding path program 1 times [2021-12-06 22:16:46,599 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:46,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726808090] [2021-12-06 22:16:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:46,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:46,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:46,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:16:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:46,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:16:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:46,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:46,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:16:46,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:16:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:16:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:16:46,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:16:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 22:16:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 22:16:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 22:16:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 22:16:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:16:46,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:46,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 22:16:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 22:16:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:47,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-06 22:16:47,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:47,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-06 22:16:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:47,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 228 [2021-12-06 22:16:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:47,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2021-12-06 22:16:47,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:47,032 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-06 22:16:47,032 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:47,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726808090] [2021-12-06 22:16:47,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726808090] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:16:47,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918536496] [2021-12-06 22:16:47,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:47,033 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:16:47,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:16:47,035 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:16:47,035 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 22:16:47,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:47,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 3596 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-06 22:16:47,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:16:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-06 22:16:47,785 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 22:16:47,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918536496] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:47,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 22:16:47,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 11 [2021-12-06 22:16:47,786 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922983373] [2021-12-06 22:16:47,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:47,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 22:16:47,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:47,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 22:16:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:16:47,787 INFO L87 Difference]: Start difference. First operand 29171 states and 43934 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 22:16:49,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:49,038 INFO L93 Difference]: Finished difference Result 61993 states and 94087 transitions. [2021-12-06 22:16:49,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 22:16:49,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) Word has length 245 [2021-12-06 22:16:49,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:49,139 INFO L225 Difference]: With dead ends: 61993 [2021-12-06 22:16:49,139 INFO L226 Difference]: Without dead ends: 32846 [2021-12-06 22:16:49,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:16:49,218 INFO L933 BasicCegarLoop]: 1745 mSDtfsCounter, 234 mSDsluCounter, 4977 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 6722 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:49,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 6722 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 22:16:49,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32846 states. [2021-12-06 22:16:50,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32846 to 29211. [2021-12-06 22:16:50,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29211 states, 20301 states have (on average 1.3194423920003941) internal successors, (26786), 21274 states have internal predecessors, (26786), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2005 states have return successors, (10294), 6906 states have call predecessors, (10294), 6903 states have call successors, (10294) [2021-12-06 22:16:50,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29211 states to 29211 states and 43984 transitions. [2021-12-06 22:16:50,615 INFO L78 Accepts]: Start accepts. Automaton has 29211 states and 43984 transitions. Word has length 245 [2021-12-06 22:16:50,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:16:50,616 INFO L470 AbstractCegarLoop]: Abstraction has 29211 states and 43984 transitions. [2021-12-06 22:16:50,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (22), 3 states have call predecessors, (22), 2 states have call successors, (22) [2021-12-06 22:16:50,616 INFO L276 IsEmpty]: Start isEmpty. Operand 29211 states and 43984 transitions. [2021-12-06 22:16:50,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-12-06 22:16:50,621 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:16:50,622 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:16:50,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 22:16:50,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:16:50,822 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:16:50,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:16:50,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1133534905, now seen corresponding path program 1 times [2021-12-06 22:16:50,823 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:16:50,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802743472] [2021-12-06 22:16:50,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:16:50,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:16:50,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:50,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:16:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:50,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:51,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:16:51,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:51,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:16:51,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:16:51,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:16:51,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:16:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:51,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:16:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:16:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:16:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:16:51,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:16:51,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:16:51,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:16:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:16:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:16:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:16:51,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-06 22:16:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-06 22:16:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 22:16:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-06 22:16:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-06 22:16:51,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:16:51,211 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-06 22:16:51,211 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:16:51,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802743472] [2021-12-06 22:16:51,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802743472] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:16:51,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:16:51,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 22:16:51,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847978090] [2021-12-06 22:16:51,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:16:51,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:16:51,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:16:51,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:16:51,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:16:51,213 INFO L87 Difference]: Start difference. First operand 29211 states and 43984 transitions. Second operand has 11 states, 10 states have (on average 14.6) internal successors, (146), 4 states have internal predecessors, (146), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:16:58,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:16:58,576 INFO L93 Difference]: Finished difference Result 70075 states and 109811 transitions. [2021-12-06 22:16:58,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 22:16:58,576 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 14.6) internal successors, (146), 4 states have internal predecessors, (146), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 252 [2021-12-06 22:16:58,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:16:58,763 INFO L225 Difference]: With dead ends: 70075 [2021-12-06 22:16:58,763 INFO L226 Difference]: Without dead ends: 40888 [2021-12-06 22:16:58,821 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2021-12-06 22:16:58,821 INFO L933 BasicCegarLoop]: 1554 mSDtfsCounter, 2831 mSDsluCounter, 5737 mSDsCounter, 0 mSdLazyCounter, 6175 mSolverCounterSat, 2034 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3008 SdHoareTripleChecker+Valid, 7291 SdHoareTripleChecker+Invalid, 8209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2034 IncrementalHoareTripleChecker+Valid, 6175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-06 22:16:58,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3008 Valid, 7291 Invalid, 8209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2034 Valid, 6175 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-06 22:16:58,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40888 states. [2021-12-06 22:17:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40888 to 29251. [2021-12-06 22:17:00,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29251 states, 20331 states have (on average 1.3189710294623973) internal successors, (26816), 21304 states have internal predecessors, (26816), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2015 states have return successors, (10314), 6916 states have call predecessors, (10314), 6903 states have call successors, (10314) [2021-12-06 22:17:00,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29251 states to 29251 states and 44034 transitions. [2021-12-06 22:17:00,352 INFO L78 Accepts]: Start accepts. Automaton has 29251 states and 44034 transitions. Word has length 252 [2021-12-06 22:17:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:00,353 INFO L470 AbstractCegarLoop]: Abstraction has 29251 states and 44034 transitions. [2021-12-06 22:17:00,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 14.6) internal successors, (146), 4 states have internal predecessors, (146), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:17:00,353 INFO L276 IsEmpty]: Start isEmpty. Operand 29251 states and 44034 transitions. [2021-12-06 22:17:00,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2021-12-06 22:17:00,358 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:00,358 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:17:00,358 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 22:17:00,358 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:00,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:00,358 INFO L85 PathProgramCache]: Analyzing trace with hash -2039153192, now seen corresponding path program 1 times [2021-12-06 22:17:00,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:00,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612857227] [2021-12-06 22:17:00,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:00,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:00,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:17:00,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:17:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:00,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:17:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:00,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:00,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:17:00,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:17:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:17:00,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:17:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:17:00,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:17:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:17:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:17:00,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:17:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:00,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:17:00,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-06 22:17:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-06 22:17:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2021-12-06 22:17:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2021-12-06 22:17:00,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2021-12-06 22:17:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:00,633 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-06 22:17:00,633 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:00,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612857227] [2021-12-06 22:17:00,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612857227] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:00,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:00,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 22:17:00,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159575836] [2021-12-06 22:17:00,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:00,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 22:17:00,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:00,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 22:17:00,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-12-06 22:17:00,634 INFO L87 Difference]: Start difference. First operand 29251 states and 44034 transitions. Second operand has 9 states, 8 states have (on average 18.25) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:17:07,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:07,634 INFO L93 Difference]: Finished difference Result 66480 states and 102981 transitions. [2021-12-06 22:17:07,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:17:07,635 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 18.25) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 252 [2021-12-06 22:17:07,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:07,773 INFO L225 Difference]: With dead ends: 66480 [2021-12-06 22:17:07,773 INFO L226 Difference]: Without dead ends: 37253 [2021-12-06 22:17:07,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:17:07,848 INFO L933 BasicCegarLoop]: 1212 mSDtfsCounter, 2592 mSDsluCounter, 2833 mSDsCounter, 0 mSdLazyCounter, 4728 mSolverCounterSat, 2038 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2687 SdHoareTripleChecker+Valid, 4045 SdHoareTripleChecker+Invalid, 6766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2038 IncrementalHoareTripleChecker+Valid, 4728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:07,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2687 Valid, 4045 Invalid, 6766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2038 Valid, 4728 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2021-12-06 22:17:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37253 states. [2021-12-06 22:17:09,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37253 to 29271. [2021-12-06 22:17:09,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29271 states, 20351 states have (on average 1.31865755982507) internal successors, (26836), 21324 states have internal predecessors, (26836), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2015 states have return successors, (10314), 6916 states have call predecessors, (10314), 6903 states have call successors, (10314) [2021-12-06 22:17:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29271 states to 29271 states and 44054 transitions. [2021-12-06 22:17:09,419 INFO L78 Accepts]: Start accepts. Automaton has 29271 states and 44054 transitions. Word has length 252 [2021-12-06 22:17:09,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:09,419 INFO L470 AbstractCegarLoop]: Abstraction has 29271 states and 44054 transitions. [2021-12-06 22:17:09,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 18.25) internal successors, (146), 3 states have internal predecessors, (146), 3 states have call successors, (25), 8 states have call predecessors, (25), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:17:09,420 INFO L276 IsEmpty]: Start isEmpty. Operand 29271 states and 44054 transitions. [2021-12-06 22:17:09,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-06 22:17:09,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:09,425 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:09,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 22:17:09,425 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:09,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:09,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1360374819, now seen corresponding path program 1 times [2021-12-06 22:17:09,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:09,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923100961] [2021-12-06 22:17:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:09,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:09,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:17:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:17:09,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:09,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:09,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:17:09,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:17:09,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:09,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:17:09,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:17:09,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:17:09,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:17:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:17:09,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:17:09,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:17:09,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:17:09,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:09,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:17:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-06 22:17:09,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-06 22:17:09,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-06 22:17:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 22:17:09,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 22:17:09,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-06 22:17:09,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:09,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923100961] [2021-12-06 22:17:09,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923100961] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:09,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:09,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:17:09,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312540537] [2021-12-06 22:17:09,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:09,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:17:09,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:09,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:17:09,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:17:09,682 INFO L87 Difference]: Start difference. First operand 29271 states and 44054 transitions. Second operand has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:17:17,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:17,010 INFO L93 Difference]: Finished difference Result 66620 states and 103141 transitions. [2021-12-06 22:17:17,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:17:17,011 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 257 [2021-12-06 22:17:17,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:17,149 INFO L225 Difference]: With dead ends: 66620 [2021-12-06 22:17:17,149 INFO L226 Difference]: Without dead ends: 37373 [2021-12-06 22:17:17,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:17:17,230 INFO L933 BasicCegarLoop]: 1220 mSDtfsCounter, 2598 mSDsluCounter, 3539 mSDsCounter, 0 mSdLazyCounter, 5671 mSolverCounterSat, 2032 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 4759 SdHoareTripleChecker+Invalid, 7703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2032 IncrementalHoareTripleChecker+Valid, 5671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:17,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2692 Valid, 4759 Invalid, 7703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2032 Valid, 5671 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2021-12-06 22:17:17,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37373 states. [2021-12-06 22:17:18,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37373 to 29311. [2021-12-06 22:17:18,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29311 states, 20391 states have (on average 1.3180324653033202) internal successors, (26876), 21364 states have internal predecessors, (26876), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2015 states have return successors, (10314), 6916 states have call predecessors, (10314), 6903 states have call successors, (10314) [2021-12-06 22:17:18,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29311 states to 29311 states and 44094 transitions. [2021-12-06 22:17:18,998 INFO L78 Accepts]: Start accepts. Automaton has 29311 states and 44094 transitions. Word has length 257 [2021-12-06 22:17:18,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:18,999 INFO L470 AbstractCegarLoop]: Abstraction has 29311 states and 44094 transitions. [2021-12-06 22:17:18,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:17:18,999 INFO L276 IsEmpty]: Start isEmpty. Operand 29311 states and 44094 transitions. [2021-12-06 22:17:19,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-06 22:17:19,004 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:19,005 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:19,005 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 22:17:19,005 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:19,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:19,005 INFO L85 PathProgramCache]: Analyzing trace with hash 2035534945, now seen corresponding path program 1 times [2021-12-06 22:17:19,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:19,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891033890] [2021-12-06 22:17:19,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:19,006 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:17:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:19,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:17:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:17:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:19,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:19,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:17:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:19,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:17:19,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:17:19,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:17:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:17:19,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:17:19,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:17:19,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:17:19,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:17:19,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:19,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:17:19,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-06 22:17:19,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-06 22:17:19,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-06 22:17:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 22:17:19,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 22:17:19,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-06 22:17:19,334 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:19,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891033890] [2021-12-06 22:17:19,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891033890] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:19,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:19,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:17:19,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625501104] [2021-12-06 22:17:19,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:19,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:17:19,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:19,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:17:19,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:17:19,335 INFO L87 Difference]: Start difference. First operand 29311 states and 44094 transitions. Second operand has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:17:25,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:25,341 INFO L93 Difference]: Finished difference Result 66860 states and 103381 transitions. [2021-12-06 22:17:25,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 22:17:25,342 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 257 [2021-12-06 22:17:25,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:25,461 INFO L225 Difference]: With dead ends: 66860 [2021-12-06 22:17:25,461 INFO L226 Difference]: Without dead ends: 37573 [2021-12-06 22:17:25,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2021-12-06 22:17:25,542 INFO L933 BasicCegarLoop]: 1214 mSDtfsCounter, 3278 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 4275 mSolverCounterSat, 2521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3372 SdHoareTripleChecker+Valid, 4103 SdHoareTripleChecker+Invalid, 6796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2521 IncrementalHoareTripleChecker+Valid, 4275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:25,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3372 Valid, 4103 Invalid, 6796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2521 Valid, 4275 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2021-12-06 22:17:25,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37573 states. [2021-12-06 22:17:26,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37573 to 29351. [2021-12-06 22:17:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29351 states, 20431 states have (on average 1.3174098184131957) internal successors, (26916), 21404 states have internal predecessors, (26916), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2015 states have return successors, (10314), 6916 states have call predecessors, (10314), 6903 states have call successors, (10314) [2021-12-06 22:17:27,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29351 states to 29351 states and 44134 transitions. [2021-12-06 22:17:27,132 INFO L78 Accepts]: Start accepts. Automaton has 29351 states and 44134 transitions. Word has length 257 [2021-12-06 22:17:27,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:27,132 INFO L470 AbstractCegarLoop]: Abstraction has 29351 states and 44134 transitions. [2021-12-06 22:17:27,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 2 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:17:27,132 INFO L276 IsEmpty]: Start isEmpty. Operand 29351 states and 44134 transitions. [2021-12-06 22:17:27,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-06 22:17:27,138 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:27,138 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:27,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 22:17:27,138 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:27,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:27,139 INFO L85 PathProgramCache]: Analyzing trace with hash -1970612961, now seen corresponding path program 1 times [2021-12-06 22:17:27,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:27,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733360765] [2021-12-06 22:17:27,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:27,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:27,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:17:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:27,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:17:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:27,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:27,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:17:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:27,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:17:27,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:17:27,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:17:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:17:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:17:27,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:17:27,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 22:17:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 22:17:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:17:27,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:27,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 22:17:27,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2021-12-06 22:17:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-06 22:17:27,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-06 22:17:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 22:17:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 22:17:27,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:27,431 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-06 22:17:27,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:27,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733360765] [2021-12-06 22:17:27,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733360765] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:27,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:27,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 22:17:27,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520918879] [2021-12-06 22:17:27,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:27,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 22:17:27,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:27,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 22:17:27,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 22:17:27,433 INFO L87 Difference]: Start difference. First operand 29351 states and 44134 transitions. Second operand has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:17:29,041 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:17:35,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:35,860 INFO L93 Difference]: Finished difference Result 74330 states and 117621 transitions. [2021-12-06 22:17:35,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 22:17:35,861 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) Word has length 257 [2021-12-06 22:17:35,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:36,012 INFO L225 Difference]: With dead ends: 74330 [2021-12-06 22:17:36,012 INFO L226 Difference]: Without dead ends: 45003 [2021-12-06 22:17:36,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2021-12-06 22:17:36,101 INFO L933 BasicCegarLoop]: 1668 mSDtfsCounter, 3322 mSDsluCounter, 4977 mSDsCounter, 0 mSdLazyCounter, 5547 mSolverCounterSat, 2182 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3501 SdHoareTripleChecker+Valid, 6645 SdHoareTripleChecker+Invalid, 7729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2182 IncrementalHoareTripleChecker+Valid, 5547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:36,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3501 Valid, 6645 Invalid, 7729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2182 Valid, 5547 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2021-12-06 22:17:36,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45003 states. [2021-12-06 22:17:37,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45003 to 29371. [2021-12-06 22:17:37,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29371 states, 20451 states have (on average 1.3170994083418903) internal successors, (26936), 21424 states have internal predecessors, (26936), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2015 states have return successors, (10314), 6916 states have call predecessors, (10314), 6903 states have call successors, (10314) [2021-12-06 22:17:37,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29371 states to 29371 states and 44154 transitions. [2021-12-06 22:17:37,888 INFO L78 Accepts]: Start accepts. Automaton has 29371 states and 44154 transitions. Word has length 257 [2021-12-06 22:17:37,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:37,888 INFO L470 AbstractCegarLoop]: Abstraction has 29371 states and 44154 transitions. [2021-12-06 22:17:37,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.666666666666668) internal successors, (150), 4 states have internal predecessors, (150), 3 states have call successors, (27), 8 states have call predecessors, (27), 1 states have return successors, (22), 2 states have call predecessors, (22), 3 states have call successors, (22) [2021-12-06 22:17:37,888 INFO L276 IsEmpty]: Start isEmpty. Operand 29371 states and 44154 transitions. [2021-12-06 22:17:37,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-06 22:17:37,894 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:37,894 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 22:17:37,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 22:17:37,894 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:37,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:37,895 INFO L85 PathProgramCache]: Analyzing trace with hash 84979715, now seen corresponding path program 1 times [2021-12-06 22:17:37,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:37,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885332141] [2021-12-06 22:17:37,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:37,895 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:17:38,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:38,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:38,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:17:38,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:38,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:17:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:38,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:38,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:17:38,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:38,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:17:38,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:17:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:17:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:17:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:17:38,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-06 22:17:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:17:38,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 22:17:38,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:17:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:38,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 22:17:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-06 22:17:38,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 22:17:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-06 22:17:38,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 22:17:38,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 22:17:38,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:38,184 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2021-12-06 22:17:38,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:38,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885332141] [2021-12-06 22:17:38,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885332141] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:38,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:38,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 22:17:38,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101267335] [2021-12-06 22:17:38,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:38,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:17:38,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:38,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:17:38,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:17:38,186 INFO L87 Difference]: Start difference. First operand 29371 states and 44154 transitions. Second operand has 11 states, 10 states have (on average 14.8) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (26), 8 states have call predecessors, (26), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 22:17:45,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:45,258 INFO L93 Difference]: Finished difference Result 70795 states and 110771 transitions. [2021-12-06 22:17:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 22:17:45,259 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 14.8) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (26), 8 states have call predecessors, (26), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 257 [2021-12-06 22:17:45,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:45,389 INFO L225 Difference]: With dead ends: 70795 [2021-12-06 22:17:45,389 INFO L226 Difference]: Without dead ends: 41448 [2021-12-06 22:17:45,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=198, Unknown=0, NotChecked=0, Total=272 [2021-12-06 22:17:45,469 INFO L933 BasicCegarLoop]: 1606 mSDtfsCounter, 2970 mSDsluCounter, 6073 mSDsCounter, 0 mSdLazyCounter, 6330 mSolverCounterSat, 2080 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 7679 SdHoareTripleChecker+Invalid, 8410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2080 IncrementalHoareTripleChecker+Valid, 6330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:45,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3146 Valid, 7679 Invalid, 8410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2080 Valid, 6330 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2021-12-06 22:17:45,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41448 states. [2021-12-06 22:17:47,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41448 to 29391. [2021-12-06 22:17:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29391 states, 20471 states have (on average 1.3167896048068) internal successors, (26956), 21434 states have internal predecessors, (26956), 6904 states have call successors, (6904), 1618 states have call predecessors, (6904), 2015 states have return successors, (10314), 6926 states have call predecessors, (10314), 6903 states have call successors, (10314) [2021-12-06 22:17:47,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29391 states to 29391 states and 44174 transitions. [2021-12-06 22:17:47,218 INFO L78 Accepts]: Start accepts. Automaton has 29391 states and 44174 transitions. Word has length 257 [2021-12-06 22:17:47,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:17:47,218 INFO L470 AbstractCegarLoop]: Abstraction has 29391 states and 44174 transitions. [2021-12-06 22:17:47,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 14.8) internal successors, (148), 4 states have internal predecessors, (148), 3 states have call successors, (26), 8 states have call predecessors, (26), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-06 22:17:47,218 INFO L276 IsEmpty]: Start isEmpty. Operand 29391 states and 44174 transitions. [2021-12-06 22:17:47,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-06 22:17:47,224 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:17:47,224 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:17:47,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 22:17:47,224 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:17:47,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:17:47,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1990953341, now seen corresponding path program 1 times [2021-12-06 22:17:47,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:17:47,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892935969] [2021-12-06 22:17:47,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:17:47,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:17:47,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:17:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:17:47,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:47,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:47,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:17:47,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:47,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:17:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:17:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:17:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:47,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:17:47,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:17:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:17:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:17:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:17:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:17:47,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 22:17:47,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 22:17:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:17:47,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:17:47,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 22:17:47,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-06 22:17:47,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-06 22:17:47,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-06 22:17:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 22:17:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 22:17:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:17:47,535 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2021-12-06 22:17:47,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:17:47,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892935969] [2021-12-06 22:17:47,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892935969] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 22:17:47,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 22:17:47,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 22:17:47,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850040329] [2021-12-06 22:17:47,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 22:17:47,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 22:17:47,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:17:47,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 22:17:47,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-12-06 22:17:47,537 INFO L87 Difference]: Start difference. First operand 29391 states and 44174 transitions. Second operand has 11 states, 10 states have (on average 15.0) internal successors, (150), 5 states have internal predecessors, (150), 4 states have call successors, (28), 8 states have call predecessors, (28), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-06 22:17:58,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:17:58,308 INFO L93 Difference]: Finished difference Result 80374 states and 124160 transitions. [2021-12-06 22:17:58,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 22:17:58,309 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 15.0) internal successors, (150), 5 states have internal predecessors, (150), 4 states have call successors, (28), 8 states have call predecessors, (28), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 269 [2021-12-06 22:17:58,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:17:58,465 INFO L225 Difference]: With dead ends: 80374 [2021-12-06 22:17:58,465 INFO L226 Difference]: Without dead ends: 51007 [2021-12-06 22:17:58,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=152, Invalid=550, Unknown=0, NotChecked=0, Total=702 [2021-12-06 22:17:58,539 INFO L933 BasicCegarLoop]: 1571 mSDtfsCounter, 6770 mSDsluCounter, 4389 mSDsCounter, 0 mSdLazyCounter, 7771 mSolverCounterSat, 4881 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6906 SdHoareTripleChecker+Valid, 5960 SdHoareTripleChecker+Invalid, 12652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4881 IncrementalHoareTripleChecker+Valid, 7771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.6s IncrementalHoareTripleChecker+Time [2021-12-06 22:17:58,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6906 Valid, 5960 Invalid, 12652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4881 Valid, 7771 Invalid, 0 Unknown, 0 Unchecked, 7.6s Time] [2021-12-06 22:17:58,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51007 states. [2021-12-06 22:18:00,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51007 to 29471. [2021-12-06 22:18:00,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29471 states, 20531 states have (on average 1.3163508840290292) internal successors, (27026), 21504 states have internal predecessors, (27026), 6924 states have call successors, (6924), 1618 states have call predecessors, (6924), 2015 states have return successors, (10334), 6946 states have call predecessors, (10334), 6923 states have call successors, (10334) [2021-12-06 22:18:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29471 states to 29471 states and 44284 transitions. [2021-12-06 22:18:00,468 INFO L78 Accepts]: Start accepts. Automaton has 29471 states and 44284 transitions. Word has length 269 [2021-12-06 22:18:00,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:18:00,468 INFO L470 AbstractCegarLoop]: Abstraction has 29471 states and 44284 transitions. [2021-12-06 22:18:00,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 15.0) internal successors, (150), 5 states have internal predecessors, (150), 4 states have call successors, (28), 8 states have call predecessors, (28), 1 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2021-12-06 22:18:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 29471 states and 44284 transitions. [2021-12-06 22:18:00,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2021-12-06 22:18:00,471 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:18:00,471 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:18:00,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 22:18:00,471 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:18:00,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:18:00,472 INFO L85 PathProgramCache]: Analyzing trace with hash 617834117, now seen corresponding path program 1 times [2021-12-06 22:18:00,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:18:00,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632854554] [2021-12-06 22:18:00,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:00,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:18:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:18:00,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:18:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:18:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:18:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:18:00,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:00,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:18:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:18:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:18:00,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:18:00,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:18:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:18:00,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:18:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:18:00,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 22:18:00,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 22:18:00,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-06 22:18:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 22:18:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-06 22:18:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:18:00,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:18:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-06 22:18:00,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-06 22:18:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 224 [2021-12-06 22:18:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-06 22:18:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 22:18:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 22:18:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:00,828 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-12-06 22:18:00,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:18:00,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632854554] [2021-12-06 22:18:00,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632854554] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:18:00,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164040312] [2021-12-06 22:18:00,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:18:00,829 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:18:00,829 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:18:00,830 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:18:00,830 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 22:18:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:18:01,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 3823 conjuncts, 41 conjunts are in the unsatisfiable core [2021-12-06 22:18:01,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:18:01,497 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 7 treesize of output 6 [2021-12-06 22:18:17,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:18:17,896 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-06 22:18:27,982 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:18:27,983 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-06 22:19:22,388 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 58 proven. 0 refuted. 3 times theorem prover too weak. 75 trivial. 0 not checked. [2021-12-06 22:19:22,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:19:44,632 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164040312] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:19:44,632 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:19:44,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 17] total 27 [2021-12-06 22:19:44,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583664790] [2021-12-06 22:19:44,632 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:19:44,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 22:19:44,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:19:44,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 22:19:44,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=636, Unknown=40, NotChecked=0, Total=756 [2021-12-06 22:19:44,634 INFO L87 Difference]: Start difference. First operand 29471 states and 44284 transitions. Second operand has 27 states, 24 states have (on average 10.5) internal successors, (252), 18 states have internal predecessors, (252), 8 states have call successors, (52), 10 states have call predecessors, (52), 8 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2021-12-06 22:21:46,238 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:22:43,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:22:43,889 INFO L93 Difference]: Finished difference Result 79460 states and 124048 transitions. [2021-12-06 22:22:43,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-06 22:22:43,890 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 10.5) internal successors, (252), 18 states have internal predecessors, (252), 8 states have call successors, (52), 10 states have call predecessors, (52), 8 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) Word has length 269 [2021-12-06 22:22:43,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:22:44,036 INFO L225 Difference]: With dead ends: 79460 [2021-12-06 22:22:44,037 INFO L226 Difference]: Without dead ends: 49993 [2021-12-06 22:22:44,110 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 536 GetRequests, 466 SyntacticMatches, 5 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 949 ImplicationChecksByTransitivity, 259.8s TimeCoverageRelationStatistics Valid=495, Invalid=3814, Unknown=113, NotChecked=0, Total=4422 [2021-12-06 22:22:44,111 INFO L933 BasicCegarLoop]: 2259 mSDtfsCounter, 4918 mSDsluCounter, 20854 mSDsCounter, 0 mSdLazyCounter, 21372 mSolverCounterSat, 3695 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5038 SdHoareTripleChecker+Valid, 23113 SdHoareTripleChecker+Invalid, 34461 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3695 IncrementalHoareTripleChecker+Valid, 21372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 9394 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2021-12-06 22:22:44,111 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5038 Valid, 23113 Invalid, 34461 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3695 Valid, 21372 Invalid, 0 Unknown, 9394 Unchecked, 18.8s Time] [2021-12-06 22:22:44,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49993 states. [2021-12-06 22:22:46,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49993 to 33452. [2021-12-06 22:22:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33452 states, 23542 states have (on average 1.3149689915894995) internal successors, (30957), 24611 states have internal predecessors, (30957), 7594 states have call successors, (7594), 1867 states have call predecessors, (7594), 2315 states have return successors, (11418), 7579 states have call predecessors, (11418), 7593 states have call successors, (11418) [2021-12-06 22:22:46,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33452 states to 33452 states and 49969 transitions. [2021-12-06 22:22:46,357 INFO L78 Accepts]: Start accepts. Automaton has 33452 states and 49969 transitions. Word has length 269 [2021-12-06 22:22:46,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:22:46,358 INFO L470 AbstractCegarLoop]: Abstraction has 33452 states and 49969 transitions. [2021-12-06 22:22:46,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 10.5) internal successors, (252), 18 states have internal predecessors, (252), 8 states have call successors, (52), 10 states have call predecessors, (52), 8 states have return successors, (42), 8 states have call predecessors, (42), 8 states have call successors, (42) [2021-12-06 22:22:46,358 INFO L276 IsEmpty]: Start isEmpty. Operand 33452 states and 49969 transitions. [2021-12-06 22:22:46,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-06 22:22:46,361 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:22:46,361 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:22:46,386 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-06 22:22:46,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:46,564 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:22:46,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:22:46,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1614254719, now seen corresponding path program 1 times [2021-12-06 22:22:46,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:22:46,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786589148] [2021-12-06 22:22:46,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:46,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:22:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:46,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:46,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:22:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:46,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:22:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:22:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:22:46,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:22:46,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:22:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:22:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:22:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:46,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 22:22:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 22:22:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 22:22:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-06 22:22:47,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:22:47,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-06 22:22:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:22:47,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:22:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 22:22:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-06 22:22:47,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2021-12-06 22:22:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 252 [2021-12-06 22:22:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-06 22:22:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-06 22:22:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,166 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 160 trivial. 0 not checked. [2021-12-06 22:22:47,166 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:22:47,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786589148] [2021-12-06 22:22:47,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786589148] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:22:47,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115178158] [2021-12-06 22:22:47,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:22:47,167 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:22:47,167 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:22:47,168 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:22:47,168 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 22:22:47,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:22:47,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 3886 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 22:22:47,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:22:47,853 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 7 treesize of output 6 [2021-12-06 22:23:08,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:23:08,187 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-06 22:23:20,290 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:23:20,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-06 22:24:18,778 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 83 proven. 2 refuted. 3 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-06 22:24:18,778 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 22:24:41,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115178158] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:24:41,041 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-06 22:24:41,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17] total 29 [2021-12-06 22:24:41,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124858867] [2021-12-06 22:24:41,042 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-06 22:24:41,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-06 22:24:41,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 22:24:41,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-06 22:24:41,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=741, Unknown=43, NotChecked=0, Total=870 [2021-12-06 22:24:41,043 INFO L87 Difference]: Start difference. First operand 33452 states and 49969 transitions. Second operand has 29 states, 26 states have (on average 9.384615384615385) internal successors, (244), 21 states have internal predecessors, (244), 9 states have call successors, (54), 10 states have call predecessors, (54), 8 states have return successors, (44), 8 states have call predecessors, (44), 9 states have call successors, (44) [2021-12-06 22:27:12,763 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 22:27:38,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 22:27:38,603 INFO L93 Difference]: Finished difference Result 76279 states and 116845 transitions. [2021-12-06 22:27:38,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-06 22:27:38,604 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 26 states have (on average 9.384615384615385) internal successors, (244), 21 states have internal predecessors, (244), 9 states have call successors, (54), 10 states have call predecessors, (54), 8 states have return successors, (44), 8 states have call predecessors, (44), 9 states have call successors, (44) Word has length 284 [2021-12-06 22:27:38,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 22:27:38,744 INFO L225 Difference]: With dead ends: 76279 [2021-12-06 22:27:38,744 INFO L226 Difference]: Without dead ends: 42655 [2021-12-06 22:27:38,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 546 GetRequests, 483 SyntacticMatches, 5 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 273.8s TimeCoverageRelationStatistics Valid=396, Invalid=3027, Unknown=117, NotChecked=0, Total=3540 [2021-12-06 22:27:38,829 INFO L933 BasicCegarLoop]: 1291 mSDtfsCounter, 2974 mSDsluCounter, 9459 mSDsCounter, 0 mSdLazyCounter, 15399 mSolverCounterSat, 2153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3068 SdHoareTripleChecker+Valid, 10750 SdHoareTripleChecker+Invalid, 22736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2153 IncrementalHoareTripleChecker+Valid, 15399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5184 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-12-06 22:27:38,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3068 Valid, 10750 Invalid, 22736 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2153 Valid, 15399 Invalid, 0 Unknown, 5184 Unchecked, 13.5s Time] [2021-12-06 22:27:38,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42655 states. [2021-12-06 22:27:40,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42655 to 34251. [2021-12-06 22:27:40,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34251 states, 24315 states have (on average 1.3200082253752827) internal successors, (32096), 25384 states have internal predecessors, (32096), 7594 states have call successors, (7594), 1893 states have call predecessors, (7594), 2341 states have return successors, (11428), 7579 states have call predecessors, (11428), 7593 states have call successors, (11428) [2021-12-06 22:27:41,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34251 states to 34251 states and 51118 transitions. [2021-12-06 22:27:41,093 INFO L78 Accepts]: Start accepts. Automaton has 34251 states and 51118 transitions. Word has length 284 [2021-12-06 22:27:41,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 22:27:41,093 INFO L470 AbstractCegarLoop]: Abstraction has 34251 states and 51118 transitions. [2021-12-06 22:27:41,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 26 states have (on average 9.384615384615385) internal successors, (244), 21 states have internal predecessors, (244), 9 states have call successors, (54), 10 states have call predecessors, (54), 8 states have return successors, (44), 8 states have call predecessors, (44), 9 states have call successors, (44) [2021-12-06 22:27:41,093 INFO L276 IsEmpty]: Start isEmpty. Operand 34251 states and 51118 transitions. [2021-12-06 22:27:41,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2021-12-06 22:27:41,096 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 22:27:41,097 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:27:41,122 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 22:27:41,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:41,298 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 22:27:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 22:27:41,299 INFO L85 PathProgramCache]: Analyzing trace with hash 459784789, now seen corresponding path program 1 times [2021-12-06 22:27:41,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 22:27:41,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117010811] [2021-12-06 22:27:41,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:41,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 22:27:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:27:41,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:27:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:27:41,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 22:27:41,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:27:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:27:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 22:27:41,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:27:41,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:27:41,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 22:27:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 22:27:41,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 22:27:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:27:41,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 22:27:41,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 22:27:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 22:27:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 22:27:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 22:27:41,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 22:27:41,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-06 22:27:41,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2021-12-06 22:27:41,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 22:27:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2021-12-06 22:27:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 22:27:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-06 22:27:41,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-12-06 22:27:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 22:27:41,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2021-12-06 22:27:41,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 22:27:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 22:27:41,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2021-12-06 22:27:41,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2021-12-06 22:27:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2021-12-06 22:27:41,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:41,889 INFO L134 CoverageAnalysis]: Checked inductivity of 203 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2021-12-06 22:27:41,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 22:27:41,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117010811] [2021-12-06 22:27:41,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2117010811] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 22:27:41,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191777283] [2021-12-06 22:27:41,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 22:27:41,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 22:27:41,889 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 22:27:41,890 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 22:27:41,890 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b00668f3-8f47-4d26-a259-79abd1345af7/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 22:27:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 22:27:42,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 4096 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-06 22:27:42,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 22:27:42,625 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 7 treesize of output 6 [2021-12-06 22:27:50,885 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:50,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-06 22:27:50,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:50,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-06 22:27:59,125 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:27:59,126 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-06 22:28:09,252 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:28:09,253 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-06 22:28:23,451 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_8608 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_uas_find_endpoints_#in~eps.base| v_ArrVal_8608))) is different from true [2021-12-06 22:28:23,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:28:23,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15 [2021-12-06 22:28:25,537 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 22:28:25,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 15