./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--bluetooth--hci_uart.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_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/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_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/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_697799c6-d575-46f2-8da2-167918ee4956/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 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:39:14,563 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:39:14,565 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:39:14,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:39:14,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:39:14,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:39:14,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:39:14,592 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:39:14,593 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:39:14,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:39:14,595 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:39:14,603 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:39:14,603 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:39:14,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:39:14,605 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:39:14,607 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:39:14,607 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:39:14,608 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:39:14,610 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:39:14,612 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:39:14,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:39:14,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:39:14,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:39:14,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:39:14,619 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:39:14,619 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:39:14,628 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:39:14,629 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:39:14,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:39:14,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:39:14,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:39:14,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:39:14,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:39:14,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:39:14,633 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:39:14,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:39:14,634 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:39:14,634 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:39:14,634 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:39:14,635 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:39:14,635 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:39:14,636 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-06 19:39:14,653 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:39:14,653 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:39:14,653 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:39:14,653 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:39:14,654 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:39:14,654 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:39:14,655 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:39:14,655 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:39:14,655 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:39:14,655 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:39:14,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:39:14,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:39:14,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:39:14,656 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:39:14,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:39:14,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:39:14,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:39:14,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:39:14,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:39:14,656 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:39:14,656 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:39:14,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:39:14,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:39:14,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:39:14,657 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:39:14,657 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:39:14,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:39:14,657 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:39:14,657 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:39:14,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:39:14,658 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:39:14,658 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_697799c6-d575-46f2-8da2-167918ee4956/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f8b1c7c83cbc8f75e845878e12835fe6569e3675eb400909d1669023ab04c0d [2021-12-06 19:39:14,843 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:39:14,858 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:39:14,859 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:39:14,860 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:39:14,861 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:39:14,861 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2021-12-06 19:39:14,913 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/data/b0e8aa48d/9751d13c452d4006b2f9ca22c2acd052/FLAG5c681375a [2021-12-06 19:39:15,550 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:39:15,551 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2021-12-06 19:39:15,582 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/data/b0e8aa48d/9751d13c452d4006b2f9ca22c2acd052/FLAG5c681375a [2021-12-06 19:39:15,934 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/data/b0e8aa48d/9751d13c452d4006b2f9ca22c2acd052 [2021-12-06 19:39:15,937 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:39:15,938 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:39:15,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:39:15,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:39:15,944 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:39:15,945 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:39:15" (1/1) ... [2021-12-06 19:39:15,946 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35a4147b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:15, skipping insertion in model container [2021-12-06 19:39:15,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:39:15" (1/1) ... [2021-12-06 19:39:15,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:39:16,116 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:39:18,756 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_697799c6-d575-46f2-8da2-167918ee4956/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2021-12-06 19:39:18,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:39:18,817 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:39:19,269 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_697799c6-d575-46f2-8da2-167918ee4956/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i[448815,448828] [2021-12-06 19:39:19,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:39:19,466 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:39:19,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19 WrapperNode [2021-12-06 19:39:19,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:39:19,468 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:39:19,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:39:19,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:39:19,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,720 INFO L137 Inliner]: procedures = 490, calls = 4671, calls flagged for inlining = 140, calls inlined = 118, statements flattened = 7284 [2021-12-06 19:39:19,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:39:19,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:39:19,721 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:39:19,721 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:39:19,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,883 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:39:19,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:39:19,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:39:19,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:39:19,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (1/1) ... [2021-12-06 19:39:19,982 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:39:19,991 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:39:20,003 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:39:20,005 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:39:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_skb [2021-12-06 19:39:20,032 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_skb [2021-12-06 19:39:20,032 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_prepare_pkt [2021-12-06 19:39:20,033 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_prepare_pkt [2021-12-06 19:39:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-06 19:39:20,033 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-06 19:39:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head_init [2021-12-06 19:39:20,033 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head_init [2021-12-06 19:39:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_setup [2021-12-06 19:39:20,033 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_setup [2021-12-06 19:39:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-12-06 19:39:20,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-12-06 19:39:20,033 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-06 19:39:20,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-06 19:39:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure ll_dequeue [2021-12-06 19:39:20,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_dequeue [2021-12-06 19:39:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_close [2021-12-06 19:39:20,034 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_close [2021-12-06 19:39:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_3 [2021-12-06 19:39:20,034 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_3 [2021-12-06 19:39:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2021-12-06 19:39:20,034 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2021-12-06 19:39:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-06 19:39:20,034 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-06 19:39:20,034 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_flush [2021-12-06 19:39:20,034 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_flush [2021-12-06 19:39:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure ath_dequeue [2021-12-06 19:39:20,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_dequeue [2021-12-06 19:39:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_empty [2021-12-06 19:39:20,035 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_empty [2021-12-06 19:39:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-06 19:39:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure h5_link_control [2021-12-06 19:39:20,035 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_link_control [2021-12-06 19:39:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-12-06 19:39:20,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-12-06 19:39:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-06 19:39:20,035 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-06 19:39:20,035 INFO L130 BoogieDeclarations]: Found specification of procedure bt_skb_alloc___1 [2021-12-06 19:39:20,035 INFO L138 BoogieDeclarations]: Found implementation of procedure bt_skb_alloc___1 [2021-12-06 19:39:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tailroom [2021-12-06 19:39:20,036 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tailroom [2021-12-06 19:39:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-06 19:39:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure h4_enqueue [2021-12-06 19:39:20,036 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_enqueue [2021-12-06 19:39:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure cancel_work_sync [2021-12-06 19:39:20,036 INFO L138 BoogieDeclarations]: Found implementation of procedure cancel_work_sync [2021-12-06 19:39:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure ath_hci_uart_work [2021-12-06 19:39:20,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_hci_uart_work [2021-12-06 19:39:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure btbcm_set_bdaddr [2021-12-06 19:39:20,036 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_setup [2021-12-06 19:39:20,036 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_setup [2021-12-06 19:39:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-12-06 19:39:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-06 19:39:20,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-06 19:39:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-12-06 19:39:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure __ll_do_awake [2021-12-06 19:39:20,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __ll_do_awake [2021-12-06 19:39:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_4 [2021-12-06 19:39:20,037 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_4 [2021-12-06 19:39:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure h5_peer_reset [2021-12-06 19:39:20,037 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_peer_reset [2021-12-06 19:39:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-06 19:39:20,037 INFO L130 BoogieDeclarations]: Found specification of procedure h5_enqueue [2021-12-06 19:39:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_enqueue [2021-12-06 19:39:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_complete_rx_pkt [2021-12-06 19:39:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_complete_rx_pkt [2021-12-06 19:39:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-12-06 19:39:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-12-06 19:39:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_unregister_proto [2021-12-06 19:39:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_unregister_proto [2021-12-06 19:39:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-12-06 19:39:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-12-06 19:39:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure hci_get_drvdata [2021-12-06 19:39:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_get_drvdata [2021-12-06 19:39:20,038 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_close [2021-12-06 19:39:20,038 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_close [2021-12-06 19:39:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure btintel_set_bdaddr [2021-12-06 19:39:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_purge [2021-12-06 19:39:20,039 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_purge [2021-12-06 19:39:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_recv [2021-12-06 19:39:20,039 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_recv [2021-12-06 19:39:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_register_proto [2021-12-06 19:39:20,039 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_register_proto [2021-12-06 19:39:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_recv [2021-12-06 19:39:20,039 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_recv [2021-12-06 19:39:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-06 19:39:20,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-06 19:39:20,039 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_flush [2021-12-06 19:39:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_flush [2021-12-06 19:39:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-06 19:39:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_4 [2021-12-06 19:39:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_4 [2021-12-06 19:39:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev8 [2021-12-06 19:39:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev8 [2021-12-06 19:39:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:39:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure bscp_get_crc [2021-12-06 19:39:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure bscp_get_crc [2021-12-06 19:39:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-12-06 19:39:20,040 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-12-06 19:39:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-06 19:39:20,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 19:39:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-12-06 19:39:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_4 [2021-12-06 19:39:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_4 [2021-12-06 19:39:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_init_work [2021-12-06 19:39:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_init_work [2021-12-06 19:39:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure ll_close [2021-12-06 19:39:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_close [2021-12-06 19:39:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-12-06 19:39:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-12-06 19:39:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure hci_register_dev [2021-12-06 19:39:20,041 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_register_dev [2021-12-06 19:39:20,041 INFO L130 BoogieDeclarations]: Found specification of procedure send_hcill_cmd [2021-12-06 19:39:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure send_hcill_cmd [2021-12-06 19:39:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2021-12-06 19:39:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2021-12-06 19:39:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ath_flush [2021-12-06 19:39:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_flush [2021-12-06 19:39:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_msgdelim [2021-12-06 19:39:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_msgdelim [2021-12-06 19:39:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure h4_dequeue [2021-12-06 19:39:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_dequeue [2021-12-06 19:39:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure ath_wakeup_ar3k [2021-12-06 19:39:20,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_wakeup_ar3k [2021-12-06 19:39:20,042 INFO L130 BoogieDeclarations]: Found specification of procedure h5_prepare_pkt [2021-12-06 19:39:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_prepare_pkt [2021-12-06 19:39:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2021-12-06 19:39:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2021-12-06 19:39:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2021-12-06 19:39:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2021-12-06 19:39:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_open [2021-12-06 19:39:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_open [2021-12-06 19:39:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-12-06 19:39:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-12-06 19:39:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_close [2021-12-06 19:39:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_close [2021-12-06 19:39:20,043 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-06 19:39:20,043 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-06 19:39:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure h5_cfg_field [2021-12-06 19:39:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_cfg_field [2021-12-06 19:39:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:39:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:39:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-12-06 19:39:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-12-06 19:39:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure h5_flush [2021-12-06 19:39:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_flush [2021-12-06 19:39:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-06 19:39:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-06 19:39:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure ll_check_data_len [2021-12-06 19:39:20,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_check_data_len [2021-12-06 19:39:20,044 INFO L130 BoogieDeclarations]: Found specification of procedure skb_dequeue [2021-12-06 19:39:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_dequeue [2021-12-06 19:39:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-12-06 19:39:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-12-06 19:39:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-06 19:39:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-06 19:39:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_one_byte [2021-12-06 19:39:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_one_byte [2021-12-06 19:39:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2021-12-06 19:39:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2021-12-06 19:39:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_unlink [2021-12-06 19:39:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_unlink [2021-12-06 19:39:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_set_baudrate [2021-12-06 19:39:20,045 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_set_baudrate [2021-12-06 19:39:20,045 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_8 [2021-12-06 19:39:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_8 [2021-12-06 19:39:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_disconnect_6 [2021-12-06 19:39:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_disconnect_6 [2021-12-06 19:39:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure ath_open [2021-12-06 19:39:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_open [2021-12-06 19:39:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure ath_setup [2021-12-06 19:39:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_setup [2021-12-06 19:39:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-06 19:39:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-06 19:39:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_dequeue [2021-12-06 19:39:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_dequeue [2021-12-06 19:39:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-06 19:39:20,046 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-06 19:39:20,046 INFO L130 BoogieDeclarations]: Found specification of procedure hci_free_dev [2021-12-06 19:39:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_free_dev [2021-12-06 19:39:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_head [2021-12-06 19:39:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_head [2021-12-06 19:39:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-06 19:39:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-06 19:39:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure h4_open [2021-12-06 19:39:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_open [2021-12-06 19:39:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2021-12-06 19:39:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2021-12-06 19:39:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure ERR_PTR [2021-12-06 19:39:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure ERR_PTR [2021-12-06 19:39:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_send_frame [2021-12-06 19:39:20,047 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_send_frame [2021-12-06 19:39:20,047 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-06 19:39:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure __hci_cmd_sync [2021-12-06 19:39:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __hci_cmd_sync [2021-12-06 19:39:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure ath_close [2021-12-06 19:39:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_close [2021-12-06 19:39:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_crc_update [2021-12-06 19:39:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_crc_update [2021-12-06 19:39:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-12-06 19:39:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-12-06 19:39:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-06 19:39:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-06 19:39:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2021-12-06 19:39:20,048 INFO L130 BoogieDeclarations]: Found specification of procedure __skb_queue_tail [2021-12-06 19:39:20,048 INFO L138 BoogieDeclarations]: Found implementation of procedure __skb_queue_tail [2021-12-06 19:39:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-12-06 19:39:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-12-06 19:39:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure hci_recv_frame [2021-12-06 19:39:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_recv_frame [2021-12-06 19:39:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-06 19:39:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure h4_close [2021-12-06 19:39:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_close [2021-12-06 19:39:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure disable_work_3 [2021-12-06 19:39:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_work_3 [2021-12-06 19:39:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure h5_reset_rx [2021-12-06 19:39:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_reset_rx [2021-12-06 19:39:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure kfree_skb [2021-12-06 19:39:20,049 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree_skb [2021-12-06 19:39:20,049 INFO L130 BoogieDeclarations]: Found specification of procedure tty_set_termios [2021-12-06 19:39:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_set_termios [2021-12-06 19:39:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv [2021-12-06 19:39:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv [2021-12-06 19:39:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-06 19:39:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-06 19:39:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-06 19:39:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-06 19:39:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2021-12-06 19:39:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2021-12-06 19:39:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure ath_recv [2021-12-06 19:39:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_recv [2021-12-06 19:39:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_flush [2021-12-06 19:39:20,050 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_flush [2021-12-06 19:39:20,050 INFO L130 BoogieDeclarations]: Found specification of procedure h5_close [2021-12-06 19:39:20,051 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_close [2021-12-06 19:39:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_dequeue [2021-12-06 19:39:20,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_dequeue [2021-12-06 19:39:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2021-12-06 19:39:20,051 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2021-12-06 19:39:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_slip_one_byte [2021-12-06 19:39:20,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_slip_one_byte [2021-12-06 19:39:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_open [2021-12-06 19:39:20,051 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_open [2021-12-06 19:39:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure h5_dequeue [2021-12-06 19:39:20,051 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_dequeue [2021-12-06 19:39:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure h5_slip_delim [2021-12-06 19:39:20,051 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_slip_delim [2021-12-06 19:39:20,051 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_close [2021-12-06 19:39:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_close [2021-12-06 19:39:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reserve [2021-12-06 19:39:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reserve [2021-12-06 19:39:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure ath_enqueue [2021-12-06 19:39:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ath_enqueue [2021-12-06 19:39:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure h5_open [2021-12-06 19:39:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_open [2021-12-06 19:39:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-06 19:39:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-06 19:39:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure ll_enqueue [2021-12-06 19:39:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_enqueue [2021-12-06 19:39:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-12-06 19:39:20,052 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-12-06 19:39:20,052 INFO L130 BoogieDeclarations]: Found specification of procedure h4_recv_buf [2021-12-06 19:39:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_recv_buf [2021-12-06 19:39:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-06 19:39:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-06 19:39:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-06 19:39:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure __bitrev16 [2021-12-06 19:39:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __bitrev16 [2021-12-06 19:39:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2021-12-06 19:39:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2021-12-06 19:39:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-06 19:39:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-06 19:39:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure tty_driver_flush_buffer [2021-12-06 19:39:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_driver_flush_buffer [2021-12-06 19:39:20,053 INFO L130 BoogieDeclarations]: Found specification of procedure h5_recv [2021-12-06 19:39:20,053 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_recv [2021-12-06 19:39:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure ll_open [2021-12-06 19:39:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_open [2021-12-06 19:39:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tx_wakeup [2021-12-06 19:39:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tx_wakeup [2021-12-06 19:39:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2021-12-06 19:39:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2021-12-06 19:39:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-06 19:39:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-06 19:39:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_set_baudrate [2021-12-06 19:39:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_set_baudrate [2021-12-06 19:39:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure ll_flush [2021-12-06 19:39:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_flush [2021-12-06 19:39:20,054 INFO L130 BoogieDeclarations]: Found specification of procedure bcm_enqueue [2021-12-06 19:39:20,054 INFO L138 BoogieDeclarations]: Found implementation of procedure bcm_enqueue [2021-12-06 19:39:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure h5_complete_rx_pkt [2021-12-06 19:39:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure h5_complete_rx_pkt [2021-12-06 19:39:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure ll_recv [2021-12-06 19:39:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure ll_recv [2021-12-06 19:39:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_write_work [2021-12-06 19:39:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_write_work [2021-12-06 19:39:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-12-06 19:39:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-12-06 19:39:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_len [2021-12-06 19:39:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_len [2021-12-06 19:39:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_work [2021-12-06 19:39:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_work [2021-12-06 19:39:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure hci_uart_tty_open [2021-12-06 19:39:20,055 INFO L138 BoogieDeclarations]: Found implementation of procedure hci_uart_tty_open [2021-12-06 19:39:20,055 INFO L130 BoogieDeclarations]: Found specification of procedure bcsp_enqueue [2021-12-06 19:39:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure bcsp_enqueue [2021-12-06 19:39:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-06 19:39:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-06 19:39:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 19:39:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-12-06 19:39:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:39:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2021-12-06 19:39:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2021-12-06 19:39:20,056 INFO L130 BoogieDeclarations]: Found specification of procedure h4_flush [2021-12-06 19:39:20,056 INFO L138 BoogieDeclarations]: Found implementation of procedure h4_flush [2021-12-06 19:39:20,596 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:39:20,600 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:39:21,156 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-06 19:39:29,455 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:39:29,475 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:39:29,476 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-06 19:39:29,480 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:39:29 BoogieIcfgContainer [2021-12-06 19:39:29,481 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:39:29,482 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:39:29,482 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:39:29,484 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:39:29,484 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:39:15" (1/3) ... [2021-12-06 19:39:29,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8b39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:39:29, skipping insertion in model container [2021-12-06 19:39:29,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:39:19" (2/3) ... [2021-12-06 19:39:29,485 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a8b39a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:39:29, skipping insertion in model container [2021-12-06 19:39:29,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:39:29" (3/3) ... [2021-12-06 19:39:29,486 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--bluetooth--hci_uart.ko-entry_point.cil.out.i [2021-12-06 19:39:29,490 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:39:29,490 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 19:39:29,533 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:39:29,538 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 19:39:29,538 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 19:39:29,597 INFO L276 IsEmpty]: Start isEmpty. Operand has 2694 states, 1836 states have (on average 1.3600217864923747) internal successors, (2497), 1890 states have internal predecessors, (2497), 709 states have call successors, (709), 148 states have call predecessors, (709), 147 states have return successors, (699), 686 states have call predecessors, (699), 699 states have call successors, (699) [2021-12-06 19:39:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-06 19:39:29,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:39:29,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:39:29,614 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:39:29,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:39:29,619 INFO L85 PathProgramCache]: Analyzing trace with hash 919352225, now seen corresponding path program 1 times [2021-12-06 19:39:29,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:39:29,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216665898] [2021-12-06 19:39:29,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:39:29,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:39:29,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:30,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:39:30,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:30,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 19:39:30,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:30,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:39:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:30,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:39:30,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:39:30,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216665898] [2021-12-06 19:39:30,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216665898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:39:30,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:39:30,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-06 19:39:30,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102745683] [2021-12-06 19:39:30,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:39:30,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:39:30,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:39:30,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:39:30,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-06 19:39:30,318 INFO L87 Difference]: Start difference. First operand has 2694 states, 1836 states have (on average 1.3600217864923747) internal successors, (2497), 1890 states have internal predecessors, (2497), 709 states have call successors, (709), 148 states have call predecessors, (709), 147 states have return successors, (699), 686 states have call predecessors, (699), 699 states have call successors, (699) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 19:39:33,549 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:39:37,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:39:37,316 INFO L93 Difference]: Finished difference Result 6003 states and 9011 transitions. [2021-12-06 19:39:37,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:39:37,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 57 [2021-12-06 19:39:37,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:39:37,362 INFO L225 Difference]: With dead ends: 6003 [2021-12-06 19:39:37,362 INFO L226 Difference]: Without dead ends: 3273 [2021-12-06 19:39:37,385 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:39:37,389 INFO L933 BasicCegarLoop]: 3956 mSDtfsCounter, 4107 mSDsluCounter, 2651 mSDsCounter, 0 mSdLazyCounter, 1112 mSolverCounterSat, 1305 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4484 SdHoareTripleChecker+Valid, 6607 SdHoareTripleChecker+Invalid, 2418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1305 IncrementalHoareTripleChecker+Valid, 1112 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:39:37,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4484 Valid, 6607 Invalid, 2418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1305 Valid, 1112 Invalid, 1 Unknown, 0 Unchecked, 6.6s Time] [2021-12-06 19:39:37,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2021-12-06 19:39:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 2909. [2021-12-06 19:39:37,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2909 states, 1991 states have (on average 1.3470617780010046) internal successors, (2682), 2033 states have internal predecessors, (2682), 740 states have call successors, (740), 178 states have call predecessors, (740), 177 states have return successors, (739), 726 states have call predecessors, (739), 739 states have call successors, (739) [2021-12-06 19:39:37,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2909 states to 2909 states and 4161 transitions. [2021-12-06 19:39:37,604 INFO L78 Accepts]: Start accepts. Automaton has 2909 states and 4161 transitions. Word has length 57 [2021-12-06 19:39:37,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:39:37,604 INFO L470 AbstractCegarLoop]: Abstraction has 2909 states and 4161 transitions. [2021-12-06 19:39:37,605 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 4 states have call predecessors, (9), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-12-06 19:39:37,605 INFO L276 IsEmpty]: Start isEmpty. Operand 2909 states and 4161 transitions. [2021-12-06 19:39:37,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 19:39:37,616 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:39:37,616 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 19:39:37,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:39:37,616 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:39:37,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:39:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1907866497, now seen corresponding path program 1 times [2021-12-06 19:39:37,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:39:37,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286240250] [2021-12-06 19:39:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:39:37,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:39:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:37,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:39:37,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:37,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:39:37,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:37,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:39:37,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:37,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 19:39:37,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:37,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:39:37,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:37,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:39:37,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:37,949 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:39:37,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:39:37,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286240250] [2021-12-06 19:39:37,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286240250] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:39:37,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:39:37,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:39:37,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115739718] [2021-12-06 19:39:37,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:39:37,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:39:37,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:39:37,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:39:37,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:39:37,953 INFO L87 Difference]: Start difference. First operand 2909 states and 4161 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 19:39:43,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:39:55,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:39:55,398 INFO L93 Difference]: Finished difference Result 6744 states and 9984 transitions. [2021-12-06 19:39:55,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:39:55,398 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 74 [2021-12-06 19:39:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:39:55,421 INFO L225 Difference]: With dead ends: 6744 [2021-12-06 19:39:55,422 INFO L226 Difference]: Without dead ends: 3841 [2021-12-06 19:39:55,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:39:55,435 INFO L933 BasicCegarLoop]: 3560 mSDtfsCounter, 2523 mSDsluCounter, 17066 mSDsCounter, 0 mSdLazyCounter, 9447 mSolverCounterSat, 2203 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2914 SdHoareTripleChecker+Valid, 20626 SdHoareTripleChecker+Invalid, 11651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2203 IncrementalHoareTripleChecker+Valid, 9447 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:39:55,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2914 Valid, 20626 Invalid, 11651 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2203 Valid, 9447 Invalid, 1 Unknown, 0 Unchecked, 17.0s Time] [2021-12-06 19:39:55,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3841 states. [2021-12-06 19:39:55,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3841 to 2916. [2021-12-06 19:39:55,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2916 states, 1996 states have (on average 1.3461923847695392) internal successors, (2687), 2038 states have internal predecessors, (2687), 740 states have call successors, (740), 178 states have call predecessors, (740), 179 states have return successors, (744), 728 states have call predecessors, (744), 739 states have call successors, (744) [2021-12-06 19:39:55,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2916 states to 2916 states and 4171 transitions. [2021-12-06 19:39:55,549 INFO L78 Accepts]: Start accepts. Automaton has 2916 states and 4171 transitions. Word has length 74 [2021-12-06 19:39:55,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:39:55,550 INFO L470 AbstractCegarLoop]: Abstraction has 2916 states and 4171 transitions. [2021-12-06 19:39:55,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 19:39:55,550 INFO L276 IsEmpty]: Start isEmpty. Operand 2916 states and 4171 transitions. [2021-12-06 19:39:55,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-12-06 19:39:55,559 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:39:55,559 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 19:39:55,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:39:55,559 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:39:55,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:39:55,559 INFO L85 PathProgramCache]: Analyzing trace with hash -1626018516, now seen corresponding path program 1 times [2021-12-06 19:39:55,559 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:39:55,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387712118] [2021-12-06 19:39:55,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:39:55,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:39:55,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:55,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 19:39:55,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 19:39:55,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:55,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:39:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:55,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:39:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:55,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2021-12-06 19:39:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:55,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:39:55,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:39:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:39:55,893 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:39:55,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387712118] [2021-12-06 19:39:55,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387712118] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:39:55,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:39:55,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:39:55,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842238178] [2021-12-06 19:39:55,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:39:55,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:39:55,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:39:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:39:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:39:55,896 INFO L87 Difference]: Start difference. First operand 2916 states and 4171 transitions. Second operand has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 19:40:01,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:40:13,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:13,188 INFO L93 Difference]: Finished difference Result 6748 states and 9983 transitions. [2021-12-06 19:40:13,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:40:13,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) Word has length 81 [2021-12-06 19:40:13,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:13,211 INFO L225 Difference]: With dead ends: 6748 [2021-12-06 19:40:13,211 INFO L226 Difference]: Without dead ends: 3838 [2021-12-06 19:40:13,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-12-06 19:40:13,223 INFO L933 BasicCegarLoop]: 3592 mSDtfsCounter, 2490 mSDsluCounter, 17203 mSDsCounter, 0 mSdLazyCounter, 9465 mSolverCounterSat, 2188 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2880 SdHoareTripleChecker+Valid, 20795 SdHoareTripleChecker+Invalid, 11654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2188 IncrementalHoareTripleChecker+Valid, 9465 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:13,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2880 Valid, 20795 Invalid, 11654 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2188 Valid, 9465 Invalid, 1 Unknown, 0 Unchecked, 17.0s Time] [2021-12-06 19:40:13,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3838 states. [2021-12-06 19:40:13,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3838 to 2918. [2021-12-06 19:40:13,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2918 states, 1998 states have (on average 1.3458458458458458) internal successors, (2689), 2039 states have internal predecessors, (2689), 740 states have call successors, (740), 178 states have call predecessors, (740), 179 states have return successors, (744), 729 states have call predecessors, (744), 739 states have call successors, (744) [2021-12-06 19:40:13,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2918 states to 2918 states and 4173 transitions. [2021-12-06 19:40:13,344 INFO L78 Accepts]: Start accepts. Automaton has 2918 states and 4173 transitions. Word has length 81 [2021-12-06 19:40:13,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:13,344 INFO L470 AbstractCegarLoop]: Abstraction has 2918 states and 4173 transitions. [2021-12-06 19:40:13,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.777777777777778) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (6), 3 states have call predecessors, (6), 1 states have call successors, (6) [2021-12-06 19:40:13,345 INFO L276 IsEmpty]: Start isEmpty. Operand 2918 states and 4173 transitions. [2021-12-06 19:40:13,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 19:40:13,355 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:13,355 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-06 19:40:13,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:40:13,356 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:13,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:13,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1630873535, now seen corresponding path program 1 times [2021-12-06 19:40:13,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:13,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51725197] [2021-12-06 19:40:13,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:13,356 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:13,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 19:40:13,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:13,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:40:13,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 19:40:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:13,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:40:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:40:13,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 19:40:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 19:40:13,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 19:40:13,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:40:13,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:40:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:13,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:40:13,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:13,737 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 19:40:13,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:13,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51725197] [2021-12-06 19:40:13,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51725197] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:13,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:13,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:40:13,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890095876] [2021-12-06 19:40:13,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:13,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:40:13,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:13,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:40:13,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:40:13,740 INFO L87 Difference]: Start difference. First operand 2918 states and 4173 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:40:18,650 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:40:41,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:41,523 INFO L93 Difference]: Finished difference Result 11309 states and 17252 transitions. [2021-12-06 19:40:41,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:40:41,524 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 131 [2021-12-06 19:40:41,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:41,572 INFO L225 Difference]: With dead ends: 11309 [2021-12-06 19:40:41,572 INFO L226 Difference]: Without dead ends: 8397 [2021-12-06 19:40:41,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:40:41,584 INFO L933 BasicCegarLoop]: 3931 mSDtfsCounter, 10439 mSDsluCounter, 10772 mSDsCounter, 0 mSdLazyCounter, 14757 mSolverCounterSat, 9189 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11242 SdHoareTripleChecker+Valid, 14703 SdHoareTripleChecker+Invalid, 23947 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9189 IncrementalHoareTripleChecker+Valid, 14757 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:41,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11242 Valid, 14703 Invalid, 23947 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9189 Valid, 14757 Invalid, 1 Unknown, 0 Unchecked, 27.1s Time] [2021-12-06 19:40:41,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8397 states. [2021-12-06 19:40:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8397 to 5749. [2021-12-06 19:40:41,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5749 states, 3933 states have (on average 1.3463005339435545) internal successors, (5295), 4016 states have internal predecessors, (5295), 1459 states have call successors, (1459), 353 states have call predecessors, (1459), 356 states have return successors, (1468), 1437 states have call predecessors, (1468), 1458 states have call successors, (1468) [2021-12-06 19:40:41,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5749 states to 5749 states and 8222 transitions. [2021-12-06 19:40:41,883 INFO L78 Accepts]: Start accepts. Automaton has 5749 states and 8222 transitions. Word has length 131 [2021-12-06 19:40:41,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:41,883 INFO L470 AbstractCegarLoop]: Abstraction has 5749 states and 8222 transitions. [2021-12-06 19:40:41,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:40:41,883 INFO L276 IsEmpty]: Start isEmpty. Operand 5749 states and 8222 transitions. [2021-12-06 19:40:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-06 19:40:41,892 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:41,892 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 19:40:41,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:40:41,892 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:41,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:41,893 INFO L85 PathProgramCache]: Analyzing trace with hash 775698715, now seen corresponding path program 1 times [2021-12-06 19:40:41,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:41,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254627150] [2021-12-06 19:40:41,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:41,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:41,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:40:42,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 19:40:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:40:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 19:40:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:42,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:40:42,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:40:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:42,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:40:42,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:42,125 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 19:40:42,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:42,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1254627150] [2021-12-06 19:40:42,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1254627150] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:42,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:42,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:40:42,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951746691] [2021-12-06 19:40:42,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:42,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:40:42,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:42,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:40:42,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:40:42,127 INFO L87 Difference]: Start difference. First operand 5749 states and 8222 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:40:45,220 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:40:50,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:50,611 INFO L93 Difference]: Finished difference Result 13315 states and 19582 transitions. [2021-12-06 19:40:50,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:40:50,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 92 [2021-12-06 19:40:50,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:50,650 INFO L225 Difference]: With dead ends: 13315 [2021-12-06 19:40:50,650 INFO L226 Difference]: Without dead ends: 7572 [2021-12-06 19:40:50,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:40:50,669 INFO L933 BasicCegarLoop]: 3528 mSDtfsCounter, 6051 mSDsluCounter, 3010 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 3811 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6412 SdHoareTripleChecker+Valid, 6538 SdHoareTripleChecker+Invalid, 6324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3811 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:50,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6412 Valid, 6538 Invalid, 6324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3811 Valid, 2512 Invalid, 1 Unknown, 0 Unchecked, 8.2s Time] [2021-12-06 19:40:50,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7572 states. [2021-12-06 19:40:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7572 to 5748. [2021-12-06 19:40:50,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5748 states, 3933 states have (on average 1.3457920162725654) internal successors, (5293), 4016 states have internal predecessors, (5293), 1457 states have call successors, (1457), 354 states have call predecessors, (1457), 357 states have return successors, (1466), 1435 states have call predecessors, (1466), 1456 states have call successors, (1466) [2021-12-06 19:40:50,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5748 states to 5748 states and 8216 transitions. [2021-12-06 19:40:50,903 INFO L78 Accepts]: Start accepts. Automaton has 5748 states and 8216 transitions. Word has length 92 [2021-12-06 19:40:50,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:40:50,903 INFO L470 AbstractCegarLoop]: Abstraction has 5748 states and 8216 transitions. [2021-12-06 19:40:50,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:40:50,903 INFO L276 IsEmpty]: Start isEmpty. Operand 5748 states and 8216 transitions. [2021-12-06 19:40:50,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 19:40:50,911 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:40:50,911 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 19:40:50,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:40:50,911 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:40:50,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:40:50,911 INFO L85 PathProgramCache]: Analyzing trace with hash 767501723, now seen corresponding path program 1 times [2021-12-06 19:40:50,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:40:50,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755301498] [2021-12-06 19:40:50,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:40:50,912 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:40:50,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 19:40:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:40:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:40:51,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 19:40:51,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:40:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:40:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:40:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:40:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:40:51,150 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 19:40:51,151 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:40:51,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755301498] [2021-12-06 19:40:51,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755301498] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:40:51,151 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:40:51,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:40:51,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104455335] [2021-12-06 19:40:51,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:40:51,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:40:51,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:40:51,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:40:51,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:40:51,152 INFO L87 Difference]: Start difference. First operand 5748 states and 8216 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:40:54,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:40:59,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:40:59,757 INFO L93 Difference]: Finished difference Result 13310 states and 19562 transitions. [2021-12-06 19:40:59,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:40:59,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2021-12-06 19:40:59,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:40:59,785 INFO L225 Difference]: With dead ends: 13310 [2021-12-06 19:40:59,785 INFO L226 Difference]: Without dead ends: 7568 [2021-12-06 19:40:59,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:40:59,802 INFO L933 BasicCegarLoop]: 3524 mSDtfsCounter, 6034 mSDsluCounter, 3008 mSDsCounter, 0 mSdLazyCounter, 2508 mSolverCounterSat, 3807 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6393 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 6316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3807 IncrementalHoareTripleChecker+Valid, 2508 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:40:59,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6393 Valid, 6532 Invalid, 6316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3807 Valid, 2508 Invalid, 1 Unknown, 0 Unchecked, 8.3s Time] [2021-12-06 19:40:59,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7568 states. [2021-12-06 19:41:00,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7568 to 5744. [2021-12-06 19:41:00,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5744 states, 3931 states have (on average 1.3454591706944798) internal successors, (5289), 4014 states have internal predecessors, (5289), 1455 states have call successors, (1455), 354 states have call predecessors, (1455), 357 states have return successors, (1464), 1433 states have call predecessors, (1464), 1454 states have call successors, (1464) [2021-12-06 19:41:00,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5744 states to 5744 states and 8208 transitions. [2021-12-06 19:41:00,043 INFO L78 Accepts]: Start accepts. Automaton has 5744 states and 8208 transitions. Word has length 93 [2021-12-06 19:41:00,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:00,044 INFO L470 AbstractCegarLoop]: Abstraction has 5744 states and 8208 transitions. [2021-12-06 19:41:00,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:41:00,044 INFO L276 IsEmpty]: Start isEmpty. Operand 5744 states and 8208 transitions. [2021-12-06 19:41:00,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-06 19:41:00,051 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:00,051 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:41:00,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:41:00,051 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:00,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:00,052 INFO L85 PathProgramCache]: Analyzing trace with hash 2010818820, now seen corresponding path program 1 times [2021-12-06 19:41:00,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:00,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501694974] [2021-12-06 19:41:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:00,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:41:00,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 19:41:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:00,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 19:41:00,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 19:41:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:00,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:41:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:41:00,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:00,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:41:00,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:00,265 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 19:41:00,265 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:00,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501694974] [2021-12-06 19:41:00,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501694974] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:00,265 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:00,265 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:41:00,265 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491749489] [2021-12-06 19:41:00,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:00,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:41:00,266 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:00,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:41:00,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:41:00,266 INFO L87 Difference]: Start difference. First operand 5744 states and 8208 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:41:03,341 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:41:05,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:41:06,445 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:41:10,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:41:10,272 INFO L93 Difference]: Finished difference Result 13302 states and 19540 transitions. [2021-12-06 19:41:10,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:41:10,273 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 95 [2021-12-06 19:41:10,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:41:10,296 INFO L225 Difference]: With dead ends: 13302 [2021-12-06 19:41:10,296 INFO L226 Difference]: Without dead ends: 7564 [2021-12-06 19:41:10,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:41:10,310 INFO L933 BasicCegarLoop]: 3548 mSDtfsCounter, 5985 mSDsluCounter, 2994 mSDsCounter, 0 mSdLazyCounter, 2502 mSolverCounterSat, 3806 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6348 SdHoareTripleChecker+Valid, 6542 SdHoareTripleChecker+Invalid, 6309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3806 IncrementalHoareTripleChecker+Valid, 2502 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:41:10,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6348 Valid, 6542 Invalid, 6309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3806 Valid, 2502 Invalid, 1 Unknown, 0 Unchecked, 9.7s Time] [2021-12-06 19:41:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7564 states. [2021-12-06 19:41:10,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7564 to 5740. [2021-12-06 19:41:10,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5740 states, 3929 states have (on average 1.3451259862560447) internal successors, (5285), 4012 states have internal predecessors, (5285), 1453 states have call successors, (1453), 354 states have call predecessors, (1453), 357 states have return successors, (1462), 1431 states have call predecessors, (1462), 1452 states have call successors, (1462) [2021-12-06 19:41:10,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5740 states to 5740 states and 8200 transitions. [2021-12-06 19:41:10,546 INFO L78 Accepts]: Start accepts. Automaton has 5740 states and 8200 transitions. Word has length 95 [2021-12-06 19:41:10,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:10,546 INFO L470 AbstractCegarLoop]: Abstraction has 5740 states and 8200 transitions. [2021-12-06 19:41:10,547 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:41:10,547 INFO L276 IsEmpty]: Start isEmpty. Operand 5740 states and 8200 transitions. [2021-12-06 19:41:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-12-06 19:41:10,553 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:10,553 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 19:41:10,553 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:41:10,554 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:10,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1415081116, now seen corresponding path program 1 times [2021-12-06 19:41:10,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:10,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38522051] [2021-12-06 19:41:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:10,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:10,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:41:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:41:10,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:10,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 19:41:10,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:41:10,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:41:10,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:41:10,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:10,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:41:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-12-06 19:41:10,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:10,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38522051] [2021-12-06 19:41:10,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38522051] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:10,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:10,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:41:10,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263692093] [2021-12-06 19:41:10,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:10,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:41:10,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:10,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:41:10,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:41:10,764 INFO L87 Difference]: Start difference. First operand 5740 states and 8200 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:41:13,392 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:41:19,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:41:19,012 INFO L93 Difference]: Finished difference Result 13294 states and 19518 transitions. [2021-12-06 19:41:19,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 19:41:19,012 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 94 [2021-12-06 19:41:19,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:41:19,038 INFO L225 Difference]: With dead ends: 13294 [2021-12-06 19:41:19,038 INFO L226 Difference]: Without dead ends: 7560 [2021-12-06 19:41:19,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:41:19,060 INFO L933 BasicCegarLoop]: 3541 mSDtfsCounter, 5982 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 2510 mSolverCounterSat, 3764 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6356 SdHoareTripleChecker+Valid, 6525 SdHoareTripleChecker+Invalid, 6275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3764 IncrementalHoareTripleChecker+Valid, 2510 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:41:19,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6356 Valid, 6525 Invalid, 6275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3764 Valid, 2510 Invalid, 1 Unknown, 0 Unchecked, 7.9s Time] [2021-12-06 19:41:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2021-12-06 19:41:19,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 5736. [2021-12-06 19:41:19,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5736 states, 3927 states have (on average 1.3447924624395213) internal successors, (5281), 4010 states have internal predecessors, (5281), 1451 states have call successors, (1451), 354 states have call predecessors, (1451), 357 states have return successors, (1460), 1429 states have call predecessors, (1460), 1450 states have call successors, (1460) [2021-12-06 19:41:19,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5736 states to 5736 states and 8192 transitions. [2021-12-06 19:41:19,285 INFO L78 Accepts]: Start accepts. Automaton has 5736 states and 8192 transitions. Word has length 94 [2021-12-06 19:41:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:19,285 INFO L470 AbstractCegarLoop]: Abstraction has 5736 states and 8192 transitions. [2021-12-06 19:41:19,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 2 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2021-12-06 19:41:19,286 INFO L276 IsEmpty]: Start isEmpty. Operand 5736 states and 8192 transitions. [2021-12-06 19:41:19,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-06 19:41:19,292 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:19,292 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 19:41:19,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:41:19,293 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:19,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:19,293 INFO L85 PathProgramCache]: Analyzing trace with hash -1773655576, now seen corresponding path program 1 times [2021-12-06 19:41:19,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:19,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951185506] [2021-12-06 19:41:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:19,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:41:19,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:19,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:41:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 19:41:19,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:19,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:41:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 19:41:19,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-06 19:41:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:41:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:19,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 19:41:19,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:41:19,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 19:41:19,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 19:41:19,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2021-12-06 19:41:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:19,580 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-06 19:41:19,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:19,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951185506] [2021-12-06 19:41:19,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951185506] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:19,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:19,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:41:19,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481769581] [2021-12-06 19:41:19,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:19,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:41:19,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:19,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:41:19,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:41:19,581 INFO L87 Difference]: Start difference. First operand 5736 states and 8192 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:41:23,309 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:41:27,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.37s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:41:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:41:47,450 INFO L93 Difference]: Finished difference Result 22350 states and 33957 transitions. [2021-12-06 19:41:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:41:47,451 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2021-12-06 19:41:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:41:47,500 INFO L225 Difference]: With dead ends: 22350 [2021-12-06 19:41:47,500 INFO L226 Difference]: Without dead ends: 16620 [2021-12-06 19:41:47,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:41:47,516 INFO L933 BasicCegarLoop]: 3950 mSDtfsCounter, 10349 mSDsluCounter, 10894 mSDsCounter, 0 mSdLazyCounter, 14905 mSolverCounterSat, 9146 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11154 SdHoareTripleChecker+Valid, 14844 SdHoareTripleChecker+Invalid, 24052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9146 IncrementalHoareTripleChecker+Valid, 14905 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:41:47,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11154 Valid, 14844 Invalid, 24052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9146 Valid, 14905 Invalid, 1 Unknown, 0 Unchecked, 26.8s Time] [2021-12-06 19:41:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16620 states. [2021-12-06 19:41:48,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16620 to 11332. [2021-12-06 19:41:48,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11332 states, 7754 states have (on average 1.3442094402888831) internal successors, (10423), 7919 states have internal predecessors, (10423), 2866 states have call successors, (2866), 704 states have call predecessors, (2866), 711 states have return successors, (2885), 2824 states have call predecessors, (2885), 2865 states have call successors, (2885) [2021-12-06 19:41:48,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11332 states to 11332 states and 16174 transitions. [2021-12-06 19:41:48,053 INFO L78 Accepts]: Start accepts. Automaton has 11332 states and 16174 transitions. Word has length 118 [2021-12-06 19:41:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:41:48,053 INFO L470 AbstractCegarLoop]: Abstraction has 11332 states and 16174 transitions. [2021-12-06 19:41:48,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 3 states have internal predecessors, (67), 2 states have call successors, (20), 7 states have call predecessors, (20), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:41:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 11332 states and 16174 transitions. [2021-12-06 19:41:48,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 19:41:48,060 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:41:48,060 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2021-12-06 19:41:48,060 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:41:48,060 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:41:48,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:41:48,061 INFO L85 PathProgramCache]: Analyzing trace with hash 551761797, now seen corresponding path program 1 times [2021-12-06 19:41:48,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:41:48,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338607070] [2021-12-06 19:41:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:41:48,061 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:41:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:41:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:48,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:41:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:41:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:41:48,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:41:48,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 19:41:48,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:48,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 19:41:48,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 19:41:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:41:48,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:41:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:41:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:41:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:41:48,295 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-06 19:41:48,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:41:48,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338607070] [2021-12-06 19:41:48,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338607070] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:41:48,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:41:48,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:41:48,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257787493] [2021-12-06 19:41:48,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:41:48,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:41:48,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:41:48,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:41:48,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:41:48,297 INFO L87 Difference]: Start difference. First operand 11332 states and 16174 transitions. Second operand has 8 states, 8 states have (on average 9.5) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:41:51,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:42:12,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:12,060 INFO L93 Difference]: Finished difference Result 44333 states and 67319 transitions. [2021-12-06 19:42:12,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:42:12,060 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 135 [2021-12-06 19:42:12,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:12,164 INFO L225 Difference]: With dead ends: 44333 [2021-12-06 19:42:12,164 INFO L226 Difference]: Without dead ends: 33007 [2021-12-06 19:42:12,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:42:12,195 INFO L933 BasicCegarLoop]: 4027 mSDtfsCounter, 11427 mSDsluCounter, 9488 mSDsCounter, 0 mSdLazyCounter, 11854 mSolverCounterSat, 11093 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12238 SdHoareTripleChecker+Valid, 13515 SdHoareTripleChecker+Invalid, 22948 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11093 IncrementalHoareTripleChecker+Valid, 11854 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:12,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12238 Valid, 13515 Invalid, 22948 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11093 Valid, 11854 Invalid, 1 Unknown, 0 Unchecked, 22.1s Time] [2021-12-06 19:42:12,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33007 states. [2021-12-06 19:42:13,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33007 to 22433. [2021-12-06 19:42:13,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22433 states, 15340 states have (on average 1.3429595827900913) internal successors, (20601), 15671 states have internal predecessors, (20601), 5673 states have call successors, (5673), 1404 states have call predecessors, (5673), 1419 states have return successors, (5712), 5589 states have call predecessors, (5712), 5672 states have call successors, (5712) [2021-12-06 19:42:13,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22433 states to 22433 states and 31986 transitions. [2021-12-06 19:42:13,264 INFO L78 Accepts]: Start accepts. Automaton has 22433 states and 31986 transitions. Word has length 135 [2021-12-06 19:42:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:13,264 INFO L470 AbstractCegarLoop]: Abstraction has 22433 states and 31986 transitions. [2021-12-06 19:42:13,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.5) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (19), 7 states have call predecessors, (19), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:42:13,264 INFO L276 IsEmpty]: Start isEmpty. Operand 22433 states and 31986 transitions. [2021-12-06 19:42:13,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-12-06 19:42:13,270 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:13,271 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 19:42:13,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 19:42:13,271 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:42:13,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:13,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1313808467, now seen corresponding path program 1 times [2021-12-06 19:42:13,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:42:13,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369498505] [2021-12-06 19:42:13,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:13,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:42:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:42:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:42:13,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:42:13,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:42:13,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 19:42:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:13,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:42:13,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 19:42:13,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 19:42:13,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 19:42:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-06 19:42:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 19:42:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 19:42:13,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 19:42:13,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 19:42:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 19:42:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:13,643 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 19:42:13,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:42:13,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369498505] [2021-12-06 19:42:13,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369498505] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:13,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:13,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:42:13,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471593873] [2021-12-06 19:42:13,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:13,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:42:13,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:42:13,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:42:13,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:42:13,645 INFO L87 Difference]: Start difference. First operand 22433 states and 31986 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (26), 7 states have call predecessors, (26), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 19:42:16,821 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:42:35,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:42:35,289 INFO L93 Difference]: Finished difference Result 88015 states and 133527 transitions. [2021-12-06 19:42:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:42:35,290 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (26), 7 states have call predecessors, (26), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2021-12-06 19:42:35,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:42:35,519 INFO L225 Difference]: With dead ends: 88015 [2021-12-06 19:42:35,519 INFO L226 Difference]: Without dead ends: 65588 [2021-12-06 19:42:35,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:42:35,586 INFO L933 BasicCegarLoop]: 4105 mSDtfsCounter, 11783 mSDsluCounter, 8154 mSDsCounter, 0 mSdLazyCounter, 9705 mSolverCounterSat, 11198 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12596 SdHoareTripleChecker+Valid, 12259 SdHoareTripleChecker+Invalid, 20904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11198 IncrementalHoareTripleChecker+Valid, 9705 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:42:35,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12596 Valid, 12259 Invalid, 20904 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11198 Valid, 9705 Invalid, 1 Unknown, 0 Unchecked, 18.6s Time] [2021-12-06 19:42:35,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65588 states. [2021-12-06 19:42:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65588 to 44446. [2021-12-06 19:42:37,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44446 states, 30374 states have (on average 1.3413774939092644) internal successors, (40743), 31037 states have internal predecessors, (40743), 11236 states have call successors, (11236), 2804 states have call predecessors, (11236), 2835 states have return successors, (11315), 11068 states have call predecessors, (11315), 11235 states have call successors, (11315) [2021-12-06 19:42:37,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44446 states to 44446 states and 63294 transitions. [2021-12-06 19:42:37,921 INFO L78 Accepts]: Start accepts. Automaton has 44446 states and 63294 transitions. Word has length 154 [2021-12-06 19:42:37,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:42:37,922 INFO L470 AbstractCegarLoop]: Abstraction has 44446 states and 63294 transitions. [2021-12-06 19:42:37,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 3 states have internal predecessors, (90), 2 states have call successors, (26), 7 states have call predecessors, (26), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2021-12-06 19:42:37,922 INFO L276 IsEmpty]: Start isEmpty. Operand 44446 states and 63294 transitions. [2021-12-06 19:42:37,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-06 19:42:37,929 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:42:37,929 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 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] [2021-12-06 19:42:37,929 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 19:42:37,929 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:42:37,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:42:37,930 INFO L85 PathProgramCache]: Analyzing trace with hash -1324870987, now seen corresponding path program 1 times [2021-12-06 19:42:37,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:42:37,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235279861] [2021-12-06 19:42:37,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:42:37,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:42:37,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-06 19:42:38,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:42:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 19:42:38,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:38,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:42:38,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:42:38,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:38,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 19:42:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:42:38,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:42:38,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 19:42:38,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:42:38,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 19:42:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 19:42:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 19:42:38,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 19:42:38,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 19:42:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:42:38,227 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-06 19:42:38,227 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:42:38,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235279861] [2021-12-06 19:42:38,227 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235279861] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:42:38,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:42:38,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:42:38,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345128936] [2021-12-06 19:42:38,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:42:38,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:42:38,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:42:38,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:42:38,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:42:38,229 INFO L87 Difference]: Start difference. First operand 44446 states and 63294 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (25), 7 states have call predecessors, (25), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 19:42:41,610 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:43:08,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:08,531 INFO L93 Difference]: Finished difference Result 173804 states and 263083 transitions. [2021-12-06 19:43:08,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:43:08,531 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (25), 7 states have call predecessors, (25), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 153 [2021-12-06 19:43:08,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:09,042 INFO L225 Difference]: With dead ends: 173804 [2021-12-06 19:43:09,043 INFO L226 Difference]: Without dead ends: 129364 [2021-12-06 19:43:09,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:43:09,186 INFO L933 BasicCegarLoop]: 4922 mSDtfsCounter, 9911 mSDsluCounter, 11015 mSDsCounter, 0 mSdLazyCounter, 13179 mSolverCounterSat, 8510 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10696 SdHoareTripleChecker+Valid, 15937 SdHoareTripleChecker+Invalid, 21690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8510 IncrementalHoareTripleChecker+Valid, 13179 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:09,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10696 Valid, 15937 Invalid, 21690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8510 Valid, 13179 Invalid, 1 Unknown, 0 Unchecked, 24.3s Time] [2021-12-06 19:43:09,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129364 states. [2021-12-06 19:43:13,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129364 to 87086. [2021-12-06 19:43:13,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87086 states, 59430 states have (on average 1.33708564697964) internal successors, (79463), 60757 states have internal predecessors, (79463), 22004 states have call successors, (22004), 5588 states have call predecessors, (22004), 5651 states have return successors, (22163), 21668 states have call predecessors, (22163), 22003 states have call successors, (22163) [2021-12-06 19:43:13,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87086 states to 87086 states and 123630 transitions. [2021-12-06 19:43:13,800 INFO L78 Accepts]: Start accepts. Automaton has 87086 states and 123630 transitions. Word has length 153 [2021-12-06 19:43:13,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:13,801 INFO L470 AbstractCegarLoop]: Abstraction has 87086 states and 123630 transitions. [2021-12-06 19:43:13,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (25), 7 states have call predecessors, (25), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 19:43:13,801 INFO L276 IsEmpty]: Start isEmpty. Operand 87086 states and 123630 transitions. [2021-12-06 19:43:13,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-12-06 19:43:13,808 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:13,808 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:43:13,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:43:13,808 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:43:13,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1736842927, now seen corresponding path program 1 times [2021-12-06 19:43:13,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:43:13,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900354556] [2021-12-06 19:43:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:13,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:43:13,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 19:43:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:13,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:43:13,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 19:43:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:13,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:43:13,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 19:43:13,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:13,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2021-12-06 19:43:13,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:13,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 19:43:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-06 19:43:13,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 19:43:13,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:13,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-06 19:43:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:14,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-06 19:43:14,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:14,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 19:43:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:14,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 19:43:14,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 19:43:14,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:43:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:14,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-06 19:43:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:14,047 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 19:43:14,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:43:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900354556] [2021-12-06 19:43:14,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900354556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:43:14,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:43:14,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:43:14,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237367491] [2021-12-06 19:43:14,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:43:14,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:43:14,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:43:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:43:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:43:14,049 INFO L87 Difference]: Start difference. First operand 87086 states and 123630 transitions. Second operand has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:43:16,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:43:45,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:43:45,246 INFO L93 Difference]: Finished difference Result 341625 states and 515637 transitions. [2021-12-06 19:43:45,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-06 19:43:45,246 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 165 [2021-12-06 19:43:45,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:43:46,526 INFO L225 Difference]: With dead ends: 341625 [2021-12-06 19:43:46,526 INFO L226 Difference]: Without dead ends: 254545 [2021-12-06 19:43:46,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:43:46,883 INFO L933 BasicCegarLoop]: 3995 mSDtfsCounter, 11412 mSDsluCounter, 7718 mSDsCounter, 0 mSdLazyCounter, 9850 mSolverCounterSat, 11148 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12191 SdHoareTripleChecker+Valid, 11713 SdHoareTripleChecker+Invalid, 20999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 11148 IncrementalHoareTripleChecker+Valid, 9850 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:43:46,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12191 Valid, 11713 Invalid, 20999 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [11148 Valid, 9850 Invalid, 1 Unknown, 0 Unchecked, 19.1s Time] [2021-12-06 19:43:47,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254545 states. [2021-12-06 19:43:55,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254545 to 169996. [2021-12-06 19:43:55,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169996 states, 115851 states have (on average 1.3320213032256951) internal successors, (154316), 118506 states have internal predecessors, (154316), 42879 states have call successors, (42879), 11138 states have call predecessors, (42879), 11265 states have return successors, (43198), 42207 states have call predecessors, (43198), 42878 states have call successors, (43198) [2021-12-06 19:43:56,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169996 states to 169996 states and 240393 transitions. [2021-12-06 19:43:56,438 INFO L78 Accepts]: Start accepts. Automaton has 169996 states and 240393 transitions. Word has length 165 [2021-12-06 19:43:56,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:43:56,438 INFO L470 AbstractCegarLoop]: Abstraction has 169996 states and 240393 transitions. [2021-12-06 19:43:56,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.375) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (27), 7 states have call predecessors, (27), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:43:56,439 INFO L276 IsEmpty]: Start isEmpty. Operand 169996 states and 240393 transitions. [2021-12-06 19:43:56,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2021-12-06 19:43:56,475 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:43:56,475 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:43:56,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:43:56,475 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:43:56,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:43:56,476 INFO L85 PathProgramCache]: Analyzing trace with hash -192470688, now seen corresponding path program 1 times [2021-12-06 19:43:56,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:43:56,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030010536] [2021-12-06 19:43:56,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:43:56,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:43:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:43:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 19:43:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 19:43:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 19:43:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:43:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:56,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-06 19:43:56,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:43:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 19:43:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 19:43:56,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 19:43:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 19:43:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 19:43:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 19:43:56,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 19:43:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-06 19:43:56,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:56,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 19:43:56,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-06 19:43:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:43:56,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:43:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:43:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:43:56,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:43:57,008 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-06 19:43:57,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:43:57,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030010536] [2021-12-06 19:43:57,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030010536] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:43:57,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:43:57,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 19:43:57,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831338689] [2021-12-06 19:43:57,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:43:57,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:43:57,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:43:57,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:43:57,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:43:57,010 INFO L87 Difference]: Start difference. First operand 169996 states and 240393 transitions. Second operand has 10 states, 10 states have (on average 13.6) internal successors, (136), 5 states have internal predecessors, (136), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 19:44:01,173 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:44:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:44:35,906 INFO L93 Difference]: Finished difference Result 424783 states and 635433 transitions. [2021-12-06 19:44:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 19:44:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 5 states have internal predecessors, (136), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 208 [2021-12-06 19:44:35,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:44:37,074 INFO L225 Difference]: With dead ends: 424783 [2021-12-06 19:44:37,074 INFO L226 Difference]: Without dead ends: 254793 [2021-12-06 19:44:37,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:44:37,553 INFO L933 BasicCegarLoop]: 3524 mSDtfsCounter, 3444 mSDsluCounter, 17235 mSDsCounter, 0 mSdLazyCounter, 13181 mSolverCounterSat, 3616 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3846 SdHoareTripleChecker+Valid, 20759 SdHoareTripleChecker+Invalid, 16798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3616 IncrementalHoareTripleChecker+Valid, 13181 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:44:37,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3846 Valid, 20759 Invalid, 16798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3616 Valid, 13181 Invalid, 1 Unknown, 0 Unchecked, 25.5s Time] [2021-12-06 19:44:37,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254793 states. [2021-12-06 19:44:46,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254793 to 170316. [2021-12-06 19:44:46,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170316 states, 116107 states have (on average 1.3312892418200453) internal successors, (154572), 118762 states have internal predecessors, (154572), 42879 states have call successors, (42879), 11138 states have call predecessors, (42879), 11329 states have return successors, (43646), 42271 states have call predecessors, (43646), 42878 states have call successors, (43646) [2021-12-06 19:44:46,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170316 states to 170316 states and 241097 transitions. [2021-12-06 19:44:46,931 INFO L78 Accepts]: Start accepts. Automaton has 170316 states and 241097 transitions. Word has length 208 [2021-12-06 19:44:46,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:44:46,932 INFO L470 AbstractCegarLoop]: Abstraction has 170316 states and 241097 transitions. [2021-12-06 19:44:46,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.6) internal successors, (136), 5 states have internal predecessors, (136), 2 states have call successors, (33), 6 states have call predecessors, (33), 2 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 19:44:46,932 INFO L276 IsEmpty]: Start isEmpty. Operand 170316 states and 241097 transitions. [2021-12-06 19:44:46,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2021-12-06 19:44:46,979 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:44:46,980 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:44:46,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 19:44:46,980 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:44:46,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:44:46,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1106085369, now seen corresponding path program 1 times [2021-12-06 19:44:46,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:44:46,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281993459] [2021-12-06 19:44:46,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:44:46,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:44:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-06 19:44:47,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 19:44:47,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:44:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-06 19:44:47,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 19:44:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:44:47,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:44:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:44:47,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:44:47,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:44:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 19:44:47,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 19:44:47,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-06 19:44:47,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 19:44:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-06 19:44:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:44:47,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-06 19:44:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-06 19:44:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:44:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-06 19:44:47,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2021-12-06 19:44:47,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:44:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2021-12-06 19:44:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2021-12-06 19:44:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:44:47,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:44:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:44:47,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:44:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:44:47,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:44:47,554 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 19:44:47,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:44:47,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281993459] [2021-12-06 19:44:47,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281993459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:44:47,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:44:47,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:44:47,555 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055126567] [2021-12-06 19:44:47,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:44:47,555 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:44:47,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:44:47,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:44:47,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:44:47,556 INFO L87 Difference]: Start difference. First operand 170316 states and 241097 transitions. Second operand has 8 states, 8 states have (on average 17.125) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:44:50,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:45:15,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:15,031 INFO L93 Difference]: Finished difference Result 424847 states and 632745 transitions. [2021-12-06 19:45:15,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:45:15,031 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 230 [2021-12-06 19:45:15,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:16,213 INFO L225 Difference]: With dead ends: 424847 [2021-12-06 19:45:16,213 INFO L226 Difference]: Without dead ends: 254537 [2021-12-06 19:45:16,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:45:16,688 INFO L933 BasicCegarLoop]: 3483 mSDtfsCounter, 7787 mSDsluCounter, 4572 mSDsCounter, 0 mSdLazyCounter, 4896 mSolverCounterSat, 6690 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8220 SdHoareTripleChecker+Valid, 8055 SdHoareTripleChecker+Invalid, 11587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6690 IncrementalHoareTripleChecker+Valid, 4896 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:45:16,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8220 Valid, 8055 Invalid, 11587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6690 Valid, 4896 Invalid, 1 Unknown, 0 Unchecked, 13.0s Time] [2021-12-06 19:45:16,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254537 states. [2021-12-06 19:45:26,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254537 to 170188. [2021-12-06 19:45:26,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170188 states, 116043 states have (on average 1.3309204346664598) internal successors, (154444), 118698 states have internal predecessors, (154444), 42815 states have call successors, (42815), 11138 states have call predecessors, (42815), 11329 states have return successors, (43582), 42207 states have call predecessors, (43582), 42814 states have call successors, (43582) [2021-12-06 19:45:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170188 states to 170188 states and 240841 transitions. [2021-12-06 19:45:27,231 INFO L78 Accepts]: Start accepts. Automaton has 170188 states and 240841 transitions. Word has length 230 [2021-12-06 19:45:27,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:45:27,232 INFO L470 AbstractCegarLoop]: Abstraction has 170188 states and 240841 transitions. [2021-12-06 19:45:27,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.125) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:45:27,232 INFO L276 IsEmpty]: Start isEmpty. Operand 170188 states and 240841 transitions. [2021-12-06 19:45:27,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-06 19:45:27,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:45:27,296 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:45:27,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:45:27,296 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:45:27,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:45:27,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1642597072, now seen corresponding path program 1 times [2021-12-06 19:45:27,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:45:27,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236887034] [2021-12-06 19:45:27,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:45:27,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:45:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 19:45:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 19:45:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 19:45:27,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 19:45:27,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-06 19:45:27,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:45:27,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:45:27,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:45:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:45:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:45:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 19:45:27,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 19:45:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-06 19:45:27,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-06 19:45:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 19:45:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-06 19:45:27,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 19:45:27,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 19:45:27,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-06 19:45:27,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-06 19:45:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-06 19:45:27,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:45:27,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 19:45:27,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 19:45:27,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:45:27,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:45:27,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:45:27,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:45:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:45:27,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:45:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 19:45:27,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:45:27,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236887034] [2021-12-06 19:45:27,801 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236887034] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:45:27,801 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:45:27,801 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:45:27,801 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107239160] [2021-12-06 19:45:27,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:45:27,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:45:27,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:45:27,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:45:27,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:45:27,802 INFO L87 Difference]: Start difference. First operand 170188 states and 240841 transitions. Second operand has 8 states, 8 states have (on average 17.375) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:45:31,131 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:45:58,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:45:58,746 INFO L93 Difference]: Finished difference Result 424591 states and 631977 transitions. [2021-12-06 19:45:58,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:45:58,747 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 232 [2021-12-06 19:45:58,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:45:59,833 INFO L225 Difference]: With dead ends: 424591 [2021-12-06 19:45:59,833 INFO L226 Difference]: Without dead ends: 254409 [2021-12-06 19:46:00,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:46:00,469 INFO L933 BasicCegarLoop]: 3449 mSDtfsCounter, 7259 mSDsluCounter, 5938 mSDsCounter, 0 mSdLazyCounter, 6558 mSolverCounterSat, 5669 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7692 SdHoareTripleChecker+Valid, 9387 SdHoareTripleChecker+Invalid, 12228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5669 IncrementalHoareTripleChecker+Valid, 6558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:00,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7692 Valid, 9387 Invalid, 12228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5669 Valid, 6558 Invalid, 1 Unknown, 0 Unchecked, 15.9s Time] [2021-12-06 19:46:00,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254409 states. [2021-12-06 19:46:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254409 to 170060. [2021-12-06 19:46:09,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170060 states, 115979 states have (on average 1.3305512204795695) internal successors, (154316), 118634 states have internal predecessors, (154316), 42751 states have call successors, (42751), 11138 states have call predecessors, (42751), 11329 states have return successors, (43518), 42143 states have call predecessors, (43518), 42750 states have call successors, (43518) [2021-12-06 19:46:10,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170060 states to 170060 states and 240585 transitions. [2021-12-06 19:46:10,392 INFO L78 Accepts]: Start accepts. Automaton has 170060 states and 240585 transitions. Word has length 232 [2021-12-06 19:46:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:10,392 INFO L470 AbstractCegarLoop]: Abstraction has 170060 states and 240585 transitions. [2021-12-06 19:46:10,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.375) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:46:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 170060 states and 240585 transitions. [2021-12-06 19:46:10,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2021-12-06 19:46:10,438 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:10,439 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:46:10,439 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:46:10,439 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:10,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:10,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1323490708, now seen corresponding path program 1 times [2021-12-06 19:46:10,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:10,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879792544] [2021-12-06 19:46:10,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:10,440 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:46:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 19:46:10,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 19:46:10,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 19:46:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:46:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:46:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:46:10,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:46:10,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 19:46:10,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 19:46:10,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 19:46:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-06 19:46:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 19:46:10,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-06 19:46:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-06 19:46:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-06 19:46:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2021-12-06 19:46:10,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 19:46:10,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-06 19:46:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:10,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 19:46:10,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-06 19:46:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:10,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:46:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:46:10,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:10,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:46:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:10,942 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 19:46:10,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:10,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879792544] [2021-12-06 19:46:10,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879792544] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:10,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:10,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:46:10,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729521615] [2021-12-06 19:46:10,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:10,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:46:10,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:10,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:46:10,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:46:10,944 INFO L87 Difference]: Start difference. First operand 170060 states and 240585 transitions. Second operand has 8 states, 8 states have (on average 17.5) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:46:14,298 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:46:16,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:46:43,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:46:43,236 INFO L93 Difference]: Finished difference Result 424335 states and 631209 transitions. [2021-12-06 19:46:43,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:46:43,237 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 233 [2021-12-06 19:46:43,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:46:44,362 INFO L225 Difference]: With dead ends: 424335 [2021-12-06 19:46:44,362 INFO L226 Difference]: Without dead ends: 254281 [2021-12-06 19:46:44,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:46:44,902 INFO L933 BasicCegarLoop]: 3462 mSDtfsCounter, 7274 mSDsluCounter, 5909 mSDsCounter, 0 mSdLazyCounter, 6588 mSolverCounterSat, 5657 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7700 SdHoareTripleChecker+Valid, 9371 SdHoareTripleChecker+Invalid, 12246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5657 IncrementalHoareTripleChecker+Valid, 6588 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:46:44,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7700 Valid, 9371 Invalid, 12246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5657 Valid, 6588 Invalid, 1 Unknown, 0 Unchecked, 16.1s Time] [2021-12-06 19:46:45,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254281 states. [2021-12-06 19:46:54,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254281 to 169932. [2021-12-06 19:46:54,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169932 states, 115915 states have (on average 1.3301815985851702) internal successors, (154188), 118570 states have internal predecessors, (154188), 42687 states have call successors, (42687), 11138 states have call predecessors, (42687), 11329 states have return successors, (43454), 42079 states have call predecessors, (43454), 42686 states have call successors, (43454) [2021-12-06 19:46:55,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169932 states to 169932 states and 240329 transitions. [2021-12-06 19:46:55,601 INFO L78 Accepts]: Start accepts. Automaton has 169932 states and 240329 transitions. Word has length 233 [2021-12-06 19:46:55,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:46:55,601 INFO L470 AbstractCegarLoop]: Abstraction has 169932 states and 240329 transitions. [2021-12-06 19:46:55,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.5) internal successors, (140), 3 states have internal predecessors, (140), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:46:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 169932 states and 240329 transitions. [2021-12-06 19:46:55,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2021-12-06 19:46:55,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:46:55,648 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:46:55,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 19:46:55,649 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:46:55,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:46:55,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1496110979, now seen corresponding path program 1 times [2021-12-06 19:46:55,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:46:55,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283209073] [2021-12-06 19:46:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:46:55,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:46:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:46:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:55,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 19:46:55,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:55,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 19:46:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:55,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-06 19:46:55,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:55,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-06 19:46:55,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:55,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:55,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 19:46:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:55,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-06 19:46:55,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-06 19:46:56,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:56,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 19:46:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-06 19:46:56,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-06 19:46:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-06 19:46:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 19:46:56,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 19:46:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2021-12-06 19:46:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-06 19:46:56,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:46:56,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 19:46:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-06 19:46:56,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:56,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-06 19:46:56,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-06 19:46:56,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 19:46:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 19:46:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:46:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-06 19:46:56,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:46:56,128 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-12-06 19:46:56,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:46:56,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283209073] [2021-12-06 19:46:56,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283209073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:46:56,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:46:56,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:46:56,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745876115] [2021-12-06 19:46:56,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:46:56,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:46:56,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:46:56,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:46:56,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:46:56,130 INFO L87 Difference]: Start difference. First operand 169932 states and 240329 transitions. Second operand has 8 states, 8 states have (on average 17.25) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:47:05,703 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:47:13,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:47:13,887 INFO L93 Difference]: Finished difference Result 287340 states and 410395 transitions. [2021-12-06 19:47:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:47:13,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 231 [2021-12-06 19:47:13,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:47:14,291 INFO L225 Difference]: With dead ends: 287340 [2021-12-06 19:47:14,291 INFO L226 Difference]: Without dead ends: 117414 [2021-12-06 19:47:14,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:47:14,682 INFO L933 BasicCegarLoop]: 2652 mSDtfsCounter, 5113 mSDsluCounter, 4490 mSDsCounter, 0 mSdLazyCounter, 4363 mSolverCounterSat, 4349 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5447 SdHoareTripleChecker+Valid, 7142 SdHoareTripleChecker+Invalid, 8713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4349 IncrementalHoareTripleChecker+Valid, 4363 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:47:14,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5447 Valid, 7142 Invalid, 8713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4349 Valid, 4363 Invalid, 1 Unknown, 0 Unchecked, 11.4s Time] [2021-12-06 19:47:14,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117414 states. [2021-12-06 19:47:18,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117414 to 92123. [2021-12-06 19:47:18,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92123 states, 63451 states have (on average 1.3254007029046035) internal successors, (84098), 64546 states have internal predecessors, (84098), 21572 states have call successors, (21572), 7004 states have call predecessors, (21572), 7099 states have return successors, (21755), 21260 states have call predecessors, (21755), 21571 states have call successors, (21755) [2021-12-06 19:47:19,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92123 states to 92123 states and 127425 transitions. [2021-12-06 19:47:19,136 INFO L78 Accepts]: Start accepts. Automaton has 92123 states and 127425 transitions. Word has length 231 [2021-12-06 19:47:19,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:47:19,136 INFO L470 AbstractCegarLoop]: Abstraction has 92123 states and 127425 transitions. [2021-12-06 19:47:19,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 17.25) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (37), 7 states have call predecessors, (37), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:47:19,137 INFO L276 IsEmpty]: Start isEmpty. Operand 92123 states and 127425 transitions. [2021-12-06 19:47:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-12-06 19:47:19,239 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:47:19,239 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:19,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:47:19,239 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:47:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:47:19,240 INFO L85 PathProgramCache]: Analyzing trace with hash -626773217, now seen corresponding path program 1 times [2021-12-06 19:47:19,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:47:19,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988338243] [2021-12-06 19:47:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:19,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:47:19,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:47:19,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 19:47:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:19,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 19:47:19,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 19:47:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:19,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:47:19,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:47:19,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:19,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:19,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-06 19:47:19,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:19,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:19,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:47:19,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:19,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:19,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-06 19:47:19,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:19,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-06 19:47:19,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-06 19:47:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-06 19:47:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-06 19:47:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-06 19:47:19,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-06 19:47:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 59 proven. 6 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2021-12-06 19:47:19,875 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:47:19,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988338243] [2021-12-06 19:47:19,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988338243] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:47:19,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720261360] [2021-12-06 19:47:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:19,876 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:47:19,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:47:19,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:47:19,877 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:47:20,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:20,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 5225 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-06 19:47:20,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:47:20,923 INFO L134 CoverageAnalysis]: Checked inductivity of 420 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2021-12-06 19:47:20,923 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:47:20,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [720261360] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:47:20,924 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:47:20,924 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [19] total 21 [2021-12-06 19:47:20,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925214224] [2021-12-06 19:47:20,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:47:20,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:47:20,925 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:47:20,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:47:20,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:47:20,925 INFO L87 Difference]: Start difference. First operand 92123 states and 127425 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:47:27,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:47:27,745 INFO L93 Difference]: Finished difference Result 276294 states and 382073 transitions. [2021-12-06 19:47:27,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:47:27,745 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 240 [2021-12-06 19:47:27,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:47:28,321 INFO L225 Difference]: With dead ends: 276294 [2021-12-06 19:47:28,322 INFO L226 Difference]: Without dead ends: 183985 [2021-12-06 19:47:28,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 300 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:47:28,533 INFO L933 BasicCegarLoop]: 5985 mSDtfsCounter, 2977 mSDsluCounter, 8984 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2977 SdHoareTripleChecker+Valid, 14969 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:47:28,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2977 Valid, 14969 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:47:28,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183985 states. [2021-12-06 19:47:35,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183985 to 164494. [2021-12-06 19:47:35,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164494 states, 113198 states have (on average 1.3280093287867276) internal successors, (150328), 115197 states have internal predecessors, (150328), 38708 states have call successors, (38708), 12420 states have call predecessors, (38708), 12587 states have return successors, (39035), 38128 states have call predecessors, (39035), 38707 states have call successors, (39035) [2021-12-06 19:47:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164494 states to 164494 states and 228071 transitions. [2021-12-06 19:47:36,387 INFO L78 Accepts]: Start accepts. Automaton has 164494 states and 228071 transitions. Word has length 240 [2021-12-06 19:47:36,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:47:36,388 INFO L470 AbstractCegarLoop]: Abstraction has 164494 states and 228071 transitions. [2021-12-06 19:47:36,388 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-12-06 19:47:36,388 INFO L276 IsEmpty]: Start isEmpty. Operand 164494 states and 228071 transitions. [2021-12-06 19:47:36,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2021-12-06 19:47:36,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:47:36,490 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:36,521 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:47:36,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:47:36,691 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:47:36,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:47:36,691 INFO L85 PathProgramCache]: Analyzing trace with hash -444432143, now seen corresponding path program 1 times [2021-12-06 19:47:36,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:47:36,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721206782] [2021-12-06 19:47:36,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:36,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:47:36,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:47:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:36,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 19:47:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:36,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 19:47:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:47:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 19:47:37,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 19:47:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 19:47:37,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:47:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:37,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 19:47:37,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 19:47:37,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 19:47:37,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:37,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:37,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:47:37,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 19:47:37,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:37,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:37,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 19:47:37,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:37,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:37,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-06 19:47:37,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:37,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:47:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-06 19:47:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:47:37,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 19:47:37,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2021-12-06 19:47:37,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 253 [2021-12-06 19:47:37,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2021-12-06 19:47:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-06 19:47:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:37,431 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 6 proven. 30 refuted. 0 times theorem prover too weak. 444 trivial. 0 not checked. [2021-12-06 19:47:37,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:47:37,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721206782] [2021-12-06 19:47:37,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721206782] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:47:37,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1336598163] [2021-12-06 19:47:37,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:47:37,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:47:37,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:47:37,433 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:47:37,434 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:47:38,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:47:38,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 5406 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-06 19:47:38,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:47:38,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 5 [2021-12-06 19:47:38,436 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 19:47:38,661 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-12-06 19:47:38,812 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-06 19:47:38,813 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 19:47:38,819 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:47:38,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:47:54,943 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-12-06 19:47:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 376 trivial. 0 not checked. [2021-12-06 19:47:55,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:47:55,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1336598163] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:47:55,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:47:55,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [12] total 28 [2021-12-06 19:47:55,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040325035] [2021-12-06 19:47:55,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:47:55,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-06 19:47:55,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:47:55,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-06 19:47:55,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=663, Unknown=8, NotChecked=0, Total=756 [2021-12-06 19:47:55,029 INFO L87 Difference]: Start difference. First operand 164494 states and 228071 transitions. Second operand has 18 states, 17 states have (on average 7.176470588235294) internal successors, (122), 14 states have internal predecessors, (122), 7 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-06 19:48:01,414 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:48:03,427 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:48:10,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:48:10,281 INFO L93 Difference]: Finished difference Result 337243 states and 468397 transitions. [2021-12-06 19:48:10,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 19:48:10,281 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 7.176470588235294) internal successors, (122), 14 states have internal predecessors, (122), 7 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26) Word has length 282 [2021-12-06 19:48:10,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:48:10,856 INFO L225 Difference]: With dead ends: 337243 [2021-12-06 19:48:10,856 INFO L226 Difference]: Without dead ends: 172755 [2021-12-06 19:48:11,298 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 340 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=106, Invalid=816, Unknown=8, NotChecked=0, Total=930 [2021-12-06 19:48:11,299 INFO L933 BasicCegarLoop]: 3087 mSDtfsCounter, 194 mSDsluCounter, 19919 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 23006 SdHoareTripleChecker+Invalid, 1809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 969 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:48:11,299 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [207 Valid, 23006 Invalid, 1809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 836 Invalid, 2 Unknown, 969 Unchecked, 7.9s Time] [2021-12-06 19:48:11,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172755 states. [2021-12-06 19:48:19,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172755 to 170707. [2021-12-06 19:48:19,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170707 states, 117911 states have (on average 1.3284680818583507) internal successors, (156641), 119910 states have internal predecessors, (156641), 39730 states have call successors, (39730), 12896 states have call predecessors, (39730), 13065 states have return successors, (40249), 39152 states have call predecessors, (40249), 39729 states have call successors, (40249) [2021-12-06 19:48:20,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170707 states to 170707 states and 236620 transitions. [2021-12-06 19:48:20,087 INFO L78 Accepts]: Start accepts. Automaton has 170707 states and 236620 transitions. Word has length 282 [2021-12-06 19:48:20,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:48:20,088 INFO L470 AbstractCegarLoop]: Abstraction has 170707 states and 236620 transitions. [2021-12-06 19:48:20,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 7.176470588235294) internal successors, (122), 14 states have internal predecessors, (122), 7 states have call successors, (32), 7 states have call predecessors, (32), 7 states have return successors, (26), 8 states have call predecessors, (26), 7 states have call successors, (26) [2021-12-06 19:48:20,088 INFO L276 IsEmpty]: Start isEmpty. Operand 170707 states and 236620 transitions. [2021-12-06 19:48:20,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2021-12-06 19:48:20,209 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:48:20,209 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 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] [2021-12-06 19:48:20,241 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:48:20,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-12-06 19:48:20,411 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:48:20,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:48:20,412 INFO L85 PathProgramCache]: Analyzing trace with hash 609948401, now seen corresponding path program 1 times [2021-12-06 19:48:20,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:48:20,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657529624] [2021-12-06 19:48:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:20,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:48:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:48:20,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 19:48:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 19:48:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-06 19:48:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 19:48:20,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 19:48:20,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 19:48:20,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:48:20,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:20,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 19:48:20,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-06 19:48:20,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 19:48:20,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:20,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:48:20,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:20,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-06 19:48:20,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2021-12-06 19:48:20,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-06 19:48:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-06 19:48:20,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 230 [2021-12-06 19:48:20,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-06 19:48:20,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:20,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2021-12-06 19:48:20,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2021-12-06 19:48:20,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 19:48:20,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 267 [2021-12-06 19:48:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2021-12-06 19:48:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 447 trivial. 0 not checked. [2021-12-06 19:48:20,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:48:20,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657529624] [2021-12-06 19:48:20,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657529624] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:48:20,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1966551824] [2021-12-06 19:48:20,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:20,985 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:20,985 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:48:20,986 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:48:20,987 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:48:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:21,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 5172 conjuncts, 37 conjunts are in the unsatisfiable core [2021-12-06 19:48:21,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:48:21,946 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-06 19:48:21,946 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-06 19:48:21,971 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 19:48:22,014 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 14 treesize of output 16 [2021-12-06 19:48:22,046 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 19:48:22,078 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-06 19:48:22,304 INFO L134 CoverageAnalysis]: Checked inductivity of 471 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2021-12-06 19:48:22,304 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:48:22,305 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1966551824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:48:22,305 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:48:22,305 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [13] total 19 [2021-12-06 19:48:22,305 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108584503] [2021-12-06 19:48:22,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:48:22,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:48:22,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:48:22,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:48:22,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:48:22,306 INFO L87 Difference]: Start difference. First operand 170707 states and 236620 transitions. Second operand has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-06 19:48:33,717 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:48:35,726 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:48:37,736 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:48:46,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:48:46,342 INFO L93 Difference]: Finished difference Result 341500 states and 473375 transitions. [2021-12-06 19:48:46,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:48:46,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 288 [2021-12-06 19:48:46,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:48:46,909 INFO L225 Difference]: With dead ends: 341500 [2021-12-06 19:48:46,909 INFO L226 Difference]: Without dead ends: 170799 [2021-12-06 19:48:47,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 381 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2021-12-06 19:48:47,283 INFO L933 BasicCegarLoop]: 3024 mSDtfsCounter, 121 mSDsluCounter, 11388 mSDsCounter, 0 mSdLazyCounter, 3873 mSolverCounterSat, 47 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 14412 SdHoareTripleChecker+Invalid, 3923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 3873 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:48:47,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 14412 Invalid, 3923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 3873 Invalid, 3 Unknown, 0 Unchecked, 16.8s Time] [2021-12-06 19:48:47,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170799 states. [2021-12-06 19:48:54,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170799 to 170795. [2021-12-06 19:48:54,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170795 states, 117989 states have (on average 1.3285051996372543) internal successors, (156749), 119989 states have internal predecessors, (156749), 39737 states have call successors, (39737), 12898 states have call predecessors, (39737), 13068 states have return successors, (40268), 39159 states have call predecessors, (40268), 39736 states have call successors, (40268) [2021-12-06 19:48:55,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170795 states to 170795 states and 236754 transitions. [2021-12-06 19:48:55,372 INFO L78 Accepts]: Start accepts. Automaton has 170795 states and 236754 transitions. Word has length 288 [2021-12-06 19:48:55,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:48:55,372 INFO L470 AbstractCegarLoop]: Abstraction has 170795 states and 236754 transitions. [2021-12-06 19:48:55,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.5) internal successors, (124), 7 states have internal predecessors, (124), 3 states have call successors, (33), 2 states have call predecessors, (33), 3 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-06 19:48:55,373 INFO L276 IsEmpty]: Start isEmpty. Operand 170795 states and 236754 transitions. [2021-12-06 19:48:55,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2021-12-06 19:48:55,488 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:48:55,488 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 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] [2021-12-06 19:48:55,517 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-06 19:48:55,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:55,689 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:48:55,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:48:55,689 INFO L85 PathProgramCache]: Analyzing trace with hash -777298889, now seen corresponding path program 1 times [2021-12-06 19:48:55,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:48:55,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181254709] [2021-12-06 19:48:55,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:55,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:48:55,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:48:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:55,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 19:48:55,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:55,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 19:48:55,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:55,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:48:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:55,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:48:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:48:56,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 19:48:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:48:56,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:56,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:48:56,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 19:48:56,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 19:48:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:48:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 19:48:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 19:48:56,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 19:48:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:48:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 19:48:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 19:48:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-06 19:48:56,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:48:56,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-06 19:48:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-06 19:48:56,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2021-12-06 19:48:56,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2021-12-06 19:48:56,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 274 [2021-12-06 19:48:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,229 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 429 trivial. 0 not checked. [2021-12-06 19:48:56,230 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:48:56,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181254709] [2021-12-06 19:48:56,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181254709] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:48:56,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [35226898] [2021-12-06 19:48:56,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:48:56,230 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:48:56,230 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:48:56,231 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:48:56,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-06 19:48:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:48:56,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 5187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-06 19:48:56,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:48:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2021-12-06 19:48:57,232 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:48:57,579 INFO L134 CoverageAnalysis]: Checked inductivity of 473 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2021-12-06 19:48:57,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [35226898] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 19:48:57,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:48:57,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15, 6] total 21 [2021-12-06 19:48:57,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287542516] [2021-12-06 19:48:57,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:48:57,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:48:57,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:48:57,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:48:57,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:48:57,580 INFO L87 Difference]: Start difference. First operand 170795 states and 236754 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:49:04,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:04,743 INFO L93 Difference]: Finished difference Result 342488 states and 478389 transitions. [2021-12-06 19:49:04,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:49:04,744 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 289 [2021-12-06 19:49:04,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:05,397 INFO L225 Difference]: With dead ends: 342488 [2021-12-06 19:49:05,397 INFO L226 Difference]: Without dead ends: 171787 [2021-12-06 19:49:05,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 651 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2021-12-06 19:49:05,865 INFO L933 BasicCegarLoop]: 2998 mSDtfsCounter, 6 mSDsluCounter, 5961 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 8959 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:05,866 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 8959 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:49:06,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171787 states. [2021-12-06 19:49:13,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171787 to 171787. [2021-12-06 19:49:13,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171787 states, 118814 states have (on average 1.330398774555187) internal successors, (158070), 120819 states have internal predecessors, (158070), 39737 states have call successors, (39737), 13060 states have call predecessors, (39737), 13235 states have return successors, (40552), 39159 states have call predecessors, (40552), 39736 states have call successors, (40552) [2021-12-06 19:49:14,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171787 states to 171787 states and 238359 transitions. [2021-12-06 19:49:14,101 INFO L78 Accepts]: Start accepts. Automaton has 171787 states and 238359 transitions. Word has length 289 [2021-12-06 19:49:14,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:14,102 INFO L470 AbstractCegarLoop]: Abstraction has 171787 states and 238359 transitions. [2021-12-06 19:49:14,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:49:14,102 INFO L276 IsEmpty]: Start isEmpty. Operand 171787 states and 238359 transitions. [2021-12-06 19:49:14,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2021-12-06 19:49:14,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:14,236 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 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] [2021-12-06 19:49:14,266 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-06 19:49:14,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:14,438 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:14,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:14,439 INFO L85 PathProgramCache]: Analyzing trace with hash -430777850, now seen corresponding path program 1 times [2021-12-06 19:49:14,440 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:14,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871674695] [2021-12-06 19:49:14,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:14,441 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:14,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:49:14,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 19:49:14,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 19:49:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:49:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:49:14,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:49:14,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 19:49:14,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:49:14,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:14,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:14,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:49:14,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:14,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:14,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 19:49:14,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:15,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:15,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 19:49:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:49:15,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:15,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 19:49:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:15,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:15,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 19:49:15,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 19:49:15,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:15,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 19:49:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-06 19:49:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-06 19:49:15,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-06 19:49:15,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2021-12-06 19:49:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 263 [2021-12-06 19:49:15,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 19:49:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-06 19:49:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 6 proven. 38 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-12-06 19:49:15,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:15,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871674695] [2021-12-06 19:49:15,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871674695] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:49:15,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712401077] [2021-12-06 19:49:15,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:15,162 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:49:15,163 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:49:15,163 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:49:15,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-06 19:49:15,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:15,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 5282 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 19:49:15,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:49:16,227 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 467 trivial. 0 not checked. [2021-12-06 19:49:16,227 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:49:16,482 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 473 trivial. 0 not checked. [2021-12-06 19:49:16,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712401077] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-06 19:49:16,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-06 19:49:16,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15, 5] total 19 [2021-12-06 19:49:16,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932749583] [2021-12-06 19:49:16,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:16,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:49:16,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:49:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:49:16,483 INFO L87 Difference]: Start difference. First operand 171787 states and 238359 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:49:23,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:49:23,773 INFO L93 Difference]: Finished difference Result 344364 states and 482694 transitions. [2021-12-06 19:49:23,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-06 19:49:23,774 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 290 [2021-12-06 19:49:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:49:24,491 INFO L225 Difference]: With dead ends: 344364 [2021-12-06 19:49:24,492 INFO L226 Difference]: Without dead ends: 172666 [2021-12-06 19:49:24,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 672 GetRequests, 655 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=296, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:49:24,889 INFO L933 BasicCegarLoop]: 2998 mSDtfsCounter, 4 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 5976 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:49:24,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 5976 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 19:49:25,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172666 states. [2021-12-06 19:49:32,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172666 to 172651. [2021-12-06 19:49:32,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172651 states, 119573 states have (on average 1.3300577889657363) internal successors, (159039), 121573 states have internal predecessors, (159039), 39737 states have call successors, (39737), 13170 states have call predecessors, (39737), 13340 states have return successors, (40825), 39159 states have call predecessors, (40825), 39736 states have call successors, (40825) [2021-12-06 19:49:33,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172651 states to 172651 states and 239601 transitions. [2021-12-06 19:49:33,107 INFO L78 Accepts]: Start accepts. Automaton has 172651 states and 239601 transitions. Word has length 290 [2021-12-06 19:49:33,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:49:33,108 INFO L470 AbstractCegarLoop]: Abstraction has 172651 states and 239601 transitions. [2021-12-06 19:49:33,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 2 states have call successors, (33), 2 states have call predecessors, (33), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-06 19:49:33,108 INFO L276 IsEmpty]: Start isEmpty. Operand 172651 states and 239601 transitions. [2021-12-06 19:49:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2021-12-06 19:49:33,242 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:49:33,242 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 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] [2021-12-06 19:49:33,272 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-12-06 19:49:33,443 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-06 19:49:33,444 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:49:33,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:49:33,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1863711841, now seen corresponding path program 1 times [2021-12-06 19:49:33,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:49:33,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689195484] [2021-12-06 19:49:33,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:49:33,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:49:33,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:49:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 19:49:33,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 19:49:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:49:33,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:49:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:49:33,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 19:49:33,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:49:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:33,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:49:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:33,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 19:49:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:33,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 19:49:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:49:33,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 19:49:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:33,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 19:49:33,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 19:49:33,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:49:33,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 19:49:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 232 [2021-12-06 19:49:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-06 19:49:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:49:33,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:33,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2021-12-06 19:49:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:34,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2021-12-06 19:49:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:34,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 265 [2021-12-06 19:49:34,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:34,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 271 [2021-12-06 19:49:34,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:34,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2021-12-06 19:49:34,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:49:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-12-06 19:49:34,027 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:49:34,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689195484] [2021-12-06 19:49:34,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689195484] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:49:34,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:49:34,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:49:34,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044438941] [2021-12-06 19:49:34,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:49:34,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:49:34,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:49:34,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:49:34,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:49:34,029 INFO L87 Difference]: Start difference. First operand 172651 states and 239601 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-06 19:49:41,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-06 19:50:03,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:50:03,131 INFO L93 Difference]: Finished difference Result 518229 states and 739208 transitions. [2021-12-06 19:50:03,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:50:03,132 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 292 [2021-12-06 19:50:03,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:50:04,511 INFO L225 Difference]: With dead ends: 518229 [2021-12-06 19:50:04,511 INFO L226 Difference]: Without dead ends: 345672 [2021-12-06 19:50:05,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=214, Unknown=0, NotChecked=0, Total=306 [2021-12-06 19:50:05,098 INFO L933 BasicCegarLoop]: 3169 mSDtfsCounter, 7583 mSDsluCounter, 5908 mSDsCounter, 0 mSdLazyCounter, 6300 mSolverCounterSat, 7307 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8176 SdHoareTripleChecker+Valid, 9077 SdHoareTripleChecker+Invalid, 13608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 7307 IncrementalHoareTripleChecker+Valid, 6300 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:50:05,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8176 Valid, 9077 Invalid, 13608 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [7307 Valid, 6300 Invalid, 1 Unknown, 0 Unchecked, 12.6s Time] [2021-12-06 19:50:05,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345672 states. [2021-12-06 19:50:18,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345672 to 272188. [2021-12-06 19:50:18,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272188 states, 188770 states have (on average 1.327726863378715) internal successors, (250635), 192012 states have internal predecessors, (250635), 62149 states have call successors, (62149), 20746 states have call predecessors, (62149), 21268 states have return successors, (64514), 61441 states have call predecessors, (64514), 62148 states have call successors, (64514) [2021-12-06 19:50:19,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272188 states to 272188 states and 377298 transitions. [2021-12-06 19:50:19,513 INFO L78 Accepts]: Start accepts. Automaton has 272188 states and 377298 transitions. Word has length 292 [2021-12-06 19:50:19,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:50:19,514 INFO L470 AbstractCegarLoop]: Abstraction has 272188 states and 377298 transitions. [2021-12-06 19:50:19,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (33), 7 states have call predecessors, (33), 1 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-06 19:50:19,514 INFO L276 IsEmpty]: Start isEmpty. Operand 272188 states and 377298 transitions. [2021-12-06 19:50:19,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-12-06 19:50:19,586 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:50:19,586 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:50:19,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 19:50:19,587 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:50:19,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:50:19,587 INFO L85 PathProgramCache]: Analyzing trace with hash 2064891923, now seen corresponding path program 1 times [2021-12-06 19:50:19,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:50:19,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590459809] [2021-12-06 19:50:19,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:19,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:50:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2021-12-06 19:50:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 19:50:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 19:50:20,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 19:50:20,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 19:50:20,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 19:50:20,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-06 19:50:20,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-06 19:50:20,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:20,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:50:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-06 19:50:20,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:50:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-06 19:50:20,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:20,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:50:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-06 19:50:20,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:20,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:50:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-06 19:50:20,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:50:20,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-06 19:50:20,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:20,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:50:20,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-06 19:50:20,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:20,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:50:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-06 19:50:20,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:20,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-06 19:50:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 216 [2021-12-06 19:50:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:50:20,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 233 [2021-12-06 19:50:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2021-12-06 19:50:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-06 19:50:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 261 [2021-12-06 19:50:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 269 [2021-12-06 19:50:20,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2021-12-06 19:50:20,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:50:20,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590459809] [2021-12-06 19:50:20,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590459809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:50:20,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703960533] [2021-12-06 19:50:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:50:20,272 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:50:20,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:50:20,272 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:50:20,273 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_697799c6-d575-46f2-8da2-167918ee4956/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-06 19:50:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:50:21,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 5436 conjuncts, 33 conjunts are in the unsatisfiable core [2021-12-06 19:50:21,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:50:21,236 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-06 19:50:21,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-12-06 19:50:21,363 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 469 trivial. 0 not checked. [2021-12-06 19:50:21,363 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:50:21,516 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2021-12-06 19:50:21,572 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2021-12-06 19:50:21,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-12-06 19:50:21,764 INFO L134 CoverageAnalysis]: Checked inductivity of 485 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 478 trivial. 0 not checked. [2021-12-06 19:50:21,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703960533] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:50:21,765 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:50:21,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 10] total 27 [2021-12-06 19:50:21,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199307120] [2021-12-06 19:50:21,765 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:50:21,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-06 19:50:21,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:50:21,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-06 19:50:21,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=639, Unknown=0, NotChecked=0, Total=702 [2021-12-06 19:50:21,766 INFO L87 Difference]: Start difference. First operand 272188 states and 377298 transitions. Second operand has 27 states, 24 states have (on average 8.958333333333334) internal successors, (215), 23 states have internal predecessors, (215), 8 states have call successors, (59), 7 states have call predecessors, (59), 8 states have return successors, (50), 9 states have call predecessors, (50), 7 states have call successors, (50)