./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V --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 Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 571c11c6f0409625a5365ddd11520f6f1824739b70fa0b8a35b203b7dabba441 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:50:02,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:50:02,508 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:50:02,545 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:50:02,546 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:50:02,547 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:50:02,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:50:02,552 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:50:02,554 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:50:02,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:50:02,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:50:02,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:50:02,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:50:02,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:50:02,562 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:50:02,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:50:02,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:50:02,572 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:50:02,575 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:50:02,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:50:02,586 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:50:02,588 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:50:02,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:50:02,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:50:02,601 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:50:02,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:50:02,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:50:02,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:50:02,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:50:02,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:50:02,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:50:02,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:50:02,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:50:02,617 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:50:02,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:50:02,619 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:50:02,620 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:50:02,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:50:02,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:50:02,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:50:02,623 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:50:02,624 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:50:02,672 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:50:02,672 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:50:02,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:50:02,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:50:02,674 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:50:02,674 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:50:02,675 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:50:02,675 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:50:02,675 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:50:02,675 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:50:02,676 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:50:02,677 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:50:02,677 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:50:02,677 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:50:02,677 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:50:02,678 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:50:02,678 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:50:02,678 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:50:02,680 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:50:02,680 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:50:02,681 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:50:02,681 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:50:02,681 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:50:02,681 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:50:02,682 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:50:02,682 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:50:02,683 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:50:02,684 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:50:02,684 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:50:02,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:50:02,685 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:50:02,685 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:50:02,685 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:50:02,686 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:50:02,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:50:02,686 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:50:02,686 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:50:02,687 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:50:02,687 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 571c11c6f0409625a5365ddd11520f6f1824739b70fa0b8a35b203b7dabba441 [2021-11-23 03:50:03,002 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:50:03,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:50:03,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:50:03,029 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:50:03,030 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:50:03,031 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i [2021-11-23 03:50:03,105 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/data/2ca2c40c9/988aa7ee0d044a039d03ac73bcc60650/FLAG0a4727a50 [2021-11-23 03:50:04,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:50:04,172 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i [2021-11-23 03:50:04,247 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/data/2ca2c40c9/988aa7ee0d044a039d03ac73bcc60650/FLAG0a4727a50 [2021-11-23 03:50:04,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/data/2ca2c40c9/988aa7ee0d044a039d03ac73bcc60650 [2021-11-23 03:50:04,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:50:04,532 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:50:04,534 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:50:04,534 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:50:04,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:50:04,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:04" (1/1) ... [2021-11-23 03:50:04,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@feae5b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:04, skipping insertion in model container [2021-11-23 03:50:04,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:50:04" (1/1) ... [2021-11-23 03:50:04,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:50:04,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:50:05,246 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3747] [2021-11-23 03:50:05,252 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3748-3749] [2021-11-23 03:50:05,690 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_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i[117013,117026] [2021-11-23 03:50:07,277 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:50:07,315 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:50:07,423 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name show at C: (*show)(struct kobject___0 * , struct attribute___0 * , char * ) [3747] [2021-11-23 03:50:07,424 WARN L1240 CHandler]: Detected problem Invalid redeclaration of the name store at C: (*store)(struct kobject___0 * , struct attribute___0 * , char const * , size_t ) [3748-3749] [2021-11-23 03:50:07,438 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_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/sv-benchmarks/c/ldv-linux-3.16-rc1/43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i[117013,117026] [2021-11-23 03:50:07,889 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:50:07,972 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:50:07,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07 WrapperNode [2021-11-23 03:50:07,973 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:50:07,974 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:50:07,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:50:07,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:50:07,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,112 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,331 INFO L137 Inliner]: procedures = 245, calls = 3249, calls flagged for inlining = 96, calls inlined = 88, statements flattened = 4871 [2021-11-23 03:50:08,332 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:50:08,333 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:50:08,333 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:50:08,333 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:50:08,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,427 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,427 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,598 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,630 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,650 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:50:08,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:50:08,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:50:08,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:50:08,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (1/1) ... [2021-11-23 03:50:08,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:50:08,695 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:50:08,708 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:50:08,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:50:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_resume [2021-11-23 03:50:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_resume [2021-11-23 03:50:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_complete_request [2021-11-23 03:50:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_complete_request [2021-11-23 03:50:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_pullup [2021-11-23 03:50:08,753 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_pullup [2021-11-23 03:50:08,753 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_enable [2021-11-23 03:50:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_enable [2021-11-23 03:50:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_phy_disable [2021-11-23 03:50:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_phy_disable [2021-11-23 03:50:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:50:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:50:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:50:08,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:50:08,754 INFO L130 BoogieDeclarations]: Found specification of procedure seq_puts [2021-11-23 03:50:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_puts [2021-11-23 03:50:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-23 03:50:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-23 03:50:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:50:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:50:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure seq_read [2021-11-23 03:50:08,755 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_read [2021-11-23 03:50:08,755 INFO L130 BoogieDeclarations]: Found specification of procedure ep_open [2021-11-23 03:50:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_open [2021-11-23 03:50:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_disconnect [2021-11-23 03:50:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_disconnect [2021-11-23 03:50:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure list_del_init [2021-11-23 03:50:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del_init [2021-11-23 03:50:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-11-23 03:50:08,756 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-11-23 03:50:08,756 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:50:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:50:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:50:08,757 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:50:08,757 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:50:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:50:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_write_fifo [2021-11-23 03:50:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_write_fifo [2021-11-23 03:50:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure __orr32 [2021-11-23 03:50:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __orr32 [2021-11-23 03:50:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_read_frameno [2021-11-23 03:50:08,758 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_read_frameno [2021-11-23 03:50:08,758 INFO L130 BoogieDeclarations]: Found specification of procedure our_ep [2021-11-23 03:50:08,759 INFO L138 BoogieDeclarations]: Found implementation of procedure our_ep [2021-11-23 03:50:08,759 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_dump [2021-11-23 03:50:08,760 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_dump [2021-11-23 03:50:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_core_init [2021-11-23 03:50:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_core_init [2021-11-23 03:50:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure regulator_bulk_disable [2021-11-23 03:50:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure regulator_bulk_disable [2021-11-23 03:50:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:50:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_platdata [2021-11-23 03:50:08,761 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_platdata [2021-11-23 03:50:08,761 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:50:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:50:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure to_hsotg [2021-11-23 03:50:08,762 INFO L138 BoogieDeclarations]: Found implementation of procedure to_hsotg [2021-11-23 03:50:08,762 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-11-23 03:50:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-11-23 03:50:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:50:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_enqueue_setup [2021-11-23 03:50:08,763 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_enqueue_setup [2021-11-23 03:50:08,763 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_udc_start [2021-11-23 03:50:08,764 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_udc_start [2021-11-23 03:50:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-23 03:50:08,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-23 03:50:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:50:08,764 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:50:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_probe [2021-11-23 03:50:08,764 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_probe [2021-11-23 03:50:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:50:08,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:50:08,765 INFO L130 BoogieDeclarations]: Found specification of procedure our_req [2021-11-23 03:50:08,765 INFO L138 BoogieDeclarations]: Found implementation of procedure our_req [2021-11-23 03:50:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure ep_from_windex [2021-11-23 03:50:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ep_from_windex [2021-11-23 03:50:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_udc_stop [2021-11-23 03:50:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_udc_stop [2021-11-23 03:50:08,766 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2021-11-23 03:50:08,766 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2021-11-23 03:50:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_process_req_feature [2021-11-23 03:50:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_process_req_feature [2021-11-23 03:50:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_enable [2021-11-23 03:50:08,767 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_enable [2021-11-23 03:50:08,767 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_queue [2021-11-23 03:50:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_queue [2021-11-23 03:50:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure get_ep_head [2021-11-23 03:50:08,768 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ep_head [2021-11-23 03:50:08,768 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:50:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:50:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure clk_disable_unprepare [2021-11-23 03:50:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_disable_unprepare [2021-11-23 03:50:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure fifo_open [2021-11-23 03:50:08,769 INFO L138 BoogieDeclarations]: Found implementation of procedure fifo_open [2021-11-23 03:50:08,769 INFO L130 BoogieDeclarations]: Found specification of procedure phy_exit [2021-11-23 03:50:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_exit [2021-11-23 03:50:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure clk_unprepare [2021-11-23 03:50:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure clk_unprepare [2021-11-23 03:50:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_alloc_request [2021-11-23 03:50:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_alloc_request [2021-11-23 03:50:08,770 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_init_fifo [2021-11-23 03:50:08,770 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_init_fifo [2021-11-23 03:50:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:50:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-11-23 03:50:08,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-11-23 03:50:08,771 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_send_reply [2021-11-23 03:50:08,772 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_send_reply [2021-11-23 03:50:08,773 INFO L130 BoogieDeclarations]: Found specification of procedure phy_init [2021-11-23 03:50:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure phy_init [2021-11-23 03:50:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_free_request [2021-11-23 03:50:08,775 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_free_request [2021-11-23 03:50:08,775 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-23 03:50:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2021-11-23 03:50:08,777 INFO L130 BoogieDeclarations]: Found specification of procedure usb_phy_init [2021-11-23 03:50:08,777 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_phy_init [2021-11-23 03:50:08,778 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2021-11-23 03:50:08,778 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2021-11-23 03:50:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:50:08,783 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep0_mps [2021-11-23 03:50:08,784 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep0_mps [2021-11-23 03:50:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_sethalt_lock [2021-11-23 03:50:08,784 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_sethalt_lock [2021-11-23 03:50:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_complete_setup [2021-11-23 03:50:08,784 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_complete_setup [2021-11-23 03:50:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_process_control [2021-11-23 03:50:08,784 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_process_control [2021-11-23 03:50:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:50:08,784 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2021-11-23 03:50:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2021-11-23 03:50:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_txfifo_flush [2021-11-23 03:50:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_txfifo_flush [2021-11-23 03:50:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_sethalt [2021-11-23 03:50:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_sethalt [2021-11-23 03:50:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 03:50:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 03:50:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_disable [2021-11-23 03:50:08,785 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_disable [2021-11-23 03:50:08,785 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_corereset [2021-11-23 03:50:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_corereset [2021-11-23 03:50:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:50:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:50:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_gadget_getframe [2021-11-23 03:50:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_gadget_getframe [2021-11-23 03:50:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_file [2021-11-23 03:50:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_file [2021-11-23 03:50:08,786 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2021-11-23 03:50:08,786 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2021-11-23 03:50:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:50:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2021-11-23 03:50:08,787 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2021-11-23 03:50:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure state_open [2021-11-23 03:50:08,787 INFO L138 BoogieDeclarations]: Found implementation of procedure state_open [2021-11-23 03:50:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure __bic32 [2021-11-23 03:50:08,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __bic32 [2021-11-23 03:50:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:50:08,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:50:08,787 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ctrl_epint [2021-11-23 03:50:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ctrl_epint [2021-11-23 03:50:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:50:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_en_gsint [2021-11-23 03:50:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_en_gsint [2021-11-23 03:50:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure seq_lseek [2021-11-23 03:50:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_lseek [2021-11-23 03:50:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:50:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 03:50:08,788 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 03:50:08,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:50:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_set_ep_maxpacket [2021-11-23 03:50:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_set_ep_maxpacket [2021-11-23 03:50:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:50:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:50:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:50:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:50:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_phy_enable [2021-11-23 03:50:08,789 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_phy_enable [2021-11-23 03:50:08,789 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 03:50:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 03:50:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure kill_all_requests [2021-11-23 03:50:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure kill_all_requests [2021-11-23 03:50:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_remove [2021-11-23 03:50:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_remove [2021-11-23 03:50:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_drvdata [2021-11-23 03:50:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_drvdata [2021-11-23 03:50:08,790 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-11-23 03:50:08,790 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-11-23 03:50:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure using_dma [2021-11-23 03:50:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure using_dma [2021-11-23 03:50:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:50:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:50:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:50:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2021-11-23 03:50:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_ep_dequeue [2021-11-23 03:50:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_ep_dequeue [2021-11-23 03:50:08,791 INFO L130 BoogieDeclarations]: Found specification of procedure dev_name [2021-11-23 03:50:08,791 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_name [2021-11-23 03:50:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_start_req [2021-11-23 03:50:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_start_req [2021-11-23 03:50:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2021-11-23 03:50:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2021-11-23 03:50:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2021-11-23 03:50:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2021-11-23 03:50:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:50:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:50:08,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:50:08,792 INFO L130 BoogieDeclarations]: Found specification of procedure s3c_hsotg_stall_ep0 [2021-11-23 03:50:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure s3c_hsotg_stall_ep0 [2021-11-23 03:50:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:50:08,793 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:50:08,793 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 03:50:08,879 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 03:50:09,763 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:50:09,767 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:50:10,494 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:50:15,039 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:50:16,174 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:50:16,174 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-23 03:50:16,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:16 BoogieIcfgContainer [2021-11-23 03:50:16,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:50:16,181 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:50:16,181 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:50:16,185 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:50:16,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:50:04" (1/3) ... [2021-11-23 03:50:16,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb890a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:16, skipping insertion in model container [2021-11-23 03:50:16,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:50:07" (2/3) ... [2021-11-23 03:50:16,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb890a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:50:16, skipping insertion in model container [2021-11-23 03:50:16,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:50:16" (3/3) ... [2021-11-23 03:50:16,191 INFO L111 eAbstractionObserver]: Analyzing ICFG 43_2a_consumption_linux-3.16-rc1.tar.xz-43_2a-drivers--usb--dwc2--dwc2_gadget.ko-entry_point.cil.out.i [2021-11-23 03:50:16,197 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:50:16,198 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:50:16,278 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:50:16,286 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=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:50:16,286 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:50:16,356 INFO L276 IsEmpty]: Start isEmpty. Operand has 1475 states, 884 states have (on average 1.2986425339366516) internal successors, (1148), 921 states have internal predecessors, (1148), 494 states have call successors, (494), 97 states have call predecessors, (494), 96 states have return successors, (486), 483 states have call predecessors, (486), 486 states have call successors, (486) [2021-11-23 03:50:16,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-23 03:50:16,380 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:50:16,384 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:50:16,385 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:50:16,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:50:16,394 INFO L85 PathProgramCache]: Analyzing trace with hash -1211261877, now seen corresponding path program 1 times [2021-11-23 03:50:16,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:50:16,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379908094] [2021-11-23 03:50:16,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:16,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:50:16,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:17,183 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-23 03:50:17,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:50:17,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379908094] [2021-11-23 03:50:17,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379908094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:50:17,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:50:17,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:50:17,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329675309] [2021-11-23 03:50:17,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:50:17,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:50:17,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:50:17,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:50:17,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:17,273 INFO L87 Difference]: Start difference. First operand has 1475 states, 884 states have (on average 1.2986425339366516) internal successors, (1148), 921 states have internal predecessors, (1148), 494 states have call successors, (494), 97 states have call predecessors, (494), 96 states have return successors, (486), 483 states have call predecessors, (486), 486 states have call successors, (486) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-23 03:50:19,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:50:22,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:50:22,279 INFO L93 Difference]: Finished difference Result 4329 states and 6342 transitions. [2021-11-23 03:50:22,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:50:22,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 74 [2021-11-23 03:50:22,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:50:22,407 INFO L225 Difference]: With dead ends: 4329 [2021-11-23 03:50:22,407 INFO L226 Difference]: Without dead ends: 2851 [2021-11-23 03:50:22,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:22,497 INFO L933 BasicCegarLoop]: 2376 mSDtfsCounter, 2015 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 4259 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:50:22,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2015 Valid, 4259 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 452 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 03:50:22,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2851 states. [2021-11-23 03:50:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2851 to 2847. [2021-11-23 03:50:22,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2847 states, 1710 states have (on average 1.2818713450292398) internal successors, (2192), 1763 states have internal predecessors, (2192), 947 states have call successors, (947), 190 states have call predecessors, (947), 189 states have return successors, (946), 939 states have call predecessors, (946), 946 states have call successors, (946) [2021-11-23 03:50:22,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2847 states to 2847 states and 4085 transitions. [2021-11-23 03:50:22,963 INFO L78 Accepts]: Start accepts. Automaton has 2847 states and 4085 transitions. Word has length 74 [2021-11-23 03:50:22,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:50:22,964 INFO L470 AbstractCegarLoop]: Abstraction has 2847 states and 4085 transitions. [2021-11-23 03:50:22,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-23 03:50:22,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2847 states and 4085 transitions. [2021-11-23 03:50:22,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-23 03:50:22,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:50:22,979 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 3, 3, 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] [2021-11-23 03:50:22,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:50:22,980 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:50:22,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:50:22,982 INFO L85 PathProgramCache]: Analyzing trace with hash -1684560737, now seen corresponding path program 1 times [2021-11-23 03:50:22,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:50:22,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477178749] [2021-11-23 03:50:22,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:22,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:50:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:23,327 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-11-23 03:50:23,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:50:23,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477178749] [2021-11-23 03:50:23,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477178749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:50:23,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:50:23,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:50:23,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597623918] [2021-11-23 03:50:23,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:50:23,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:50:23,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:50:23,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:50:23,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:23,332 INFO L87 Difference]: Start difference. First operand 2847 states and 4085 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 03:50:25,396 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:50:28,488 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:50:29,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:50:29,567 INFO L93 Difference]: Finished difference Result 8364 states and 11986 transitions. [2021-11-23 03:50:29,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:50:29,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 162 [2021-11-23 03:50:29,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:50:29,629 INFO L225 Difference]: With dead ends: 8364 [2021-11-23 03:50:29,629 INFO L226 Difference]: Without dead ends: 5541 [2021-11-23 03:50:29,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:29,656 INFO L933 BasicCegarLoop]: 2600 mSDtfsCounter, 1950 mSDsluCounter, 2074 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 4467 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:50:29,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1950 Valid, 4467 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 482 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-23 03:50:29,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5541 states. [2021-11-23 03:50:30,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5541 to 5538. [2021-11-23 03:50:30,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5538 states, 3327 states have (on average 1.2810339645326119) internal successors, (4262), 3432 states have internal predecessors, (4262), 1835 states have call successors, (1835), 376 states have call predecessors, (1835), 375 states have return successors, (1834), 1821 states have call predecessors, (1834), 1834 states have call successors, (1834) [2021-11-23 03:50:30,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 7931 transitions. [2021-11-23 03:50:30,121 INFO L78 Accepts]: Start accepts. Automaton has 5538 states and 7931 transitions. Word has length 162 [2021-11-23 03:50:30,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:50:30,124 INFO L470 AbstractCegarLoop]: Abstraction has 5538 states and 7931 transitions. [2021-11-23 03:50:30,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 2 states have call successors, (35), 2 states have call predecessors, (35), 1 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2021-11-23 03:50:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 5538 states and 7931 transitions. [2021-11-23 03:50:30,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-11-23 03:50:30,139 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:50:30,140 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 3, 3, 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] [2021-11-23 03:50:30,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:50:30,140 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:50:30,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:50:30,141 INFO L85 PathProgramCache]: Analyzing trace with hash 308659693, now seen corresponding path program 1 times [2021-11-23 03:50:30,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:50:30,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723105091] [2021-11-23 03:50:30,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:30,142 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:50:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2021-11-23 03:50:30,590 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:50:30,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723105091] [2021-11-23 03:50:30,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723105091] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:50:30,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:50:30,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:50:30,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066757638] [2021-11-23 03:50:30,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:50:30,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:50:30,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:50:30,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:50:30,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:30,596 INFO L87 Difference]: Start difference. First operand 5538 states and 7931 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-23 03:50:32,653 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:50:35,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:50:35,450 INFO L93 Difference]: Finished difference Result 8555 states and 12175 transitions. [2021-11-23 03:50:35,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:50:35,451 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) Word has length 151 [2021-11-23 03:50:35,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:50:35,534 INFO L225 Difference]: With dead ends: 8555 [2021-11-23 03:50:35,534 INFO L226 Difference]: Without dead ends: 8552 [2021-11-23 03:50:35,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:35,547 INFO L933 BasicCegarLoop]: 2584 mSDtfsCounter, 1706 mSDsluCounter, 1462 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:50:35,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 3880 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 03:50:35,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8552 states. [2021-11-23 03:50:36,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8552 to 8444. [2021-11-23 03:50:36,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8444 states, 5011 states have (on average 1.258431450808222) internal successors, (6306), 5176 states have internal predecessors, (6306), 2819 states have call successors, (2819), 614 states have call predecessors, (2819), 613 states have return successors, (2884), 2789 states have call predecessors, (2884), 2818 states have call successors, (2884) [2021-11-23 03:50:36,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8444 states to 8444 states and 12009 transitions. [2021-11-23 03:50:36,151 INFO L78 Accepts]: Start accepts. Automaton has 8444 states and 12009 transitions. Word has length 151 [2021-11-23 03:50:36,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:50:36,152 INFO L470 AbstractCegarLoop]: Abstraction has 8444 states and 12009 transitions. [2021-11-23 03:50:36,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (24), 3 states have call predecessors, (24), 1 states have return successors, (21), 1 states have call predecessors, (21), 1 states have call successors, (21) [2021-11-23 03:50:36,152 INFO L276 IsEmpty]: Start isEmpty. Operand 8444 states and 12009 transitions. [2021-11-23 03:50:36,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-23 03:50:36,167 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:50:36,167 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 3, 3, 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] [2021-11-23 03:50:36,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:50:36,167 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:50:36,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:50:36,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1697535650, now seen corresponding path program 1 times [2021-11-23 03:50:36,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:50:36,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271850296] [2021-11-23 03:50:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:36,169 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:50:36,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2021-11-23 03:50:36,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:50:36,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271850296] [2021-11-23 03:50:36,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271850296] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:50:36,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:50:36,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:50:36,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146850310] [2021-11-23 03:50:36,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:50:36,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:50:36,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:50:36,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:50:36,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:36,396 INFO L87 Difference]: Start difference. First operand 8444 states and 12009 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 03:50:38,450 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:50:42,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:50:42,063 INFO L93 Difference]: Finished difference Result 23282 states and 33120 transitions. [2021-11-23 03:50:42,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:50:42,064 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 172 [2021-11-23 03:50:42,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:50:42,182 INFO L225 Difference]: With dead ends: 23282 [2021-11-23 03:50:42,183 INFO L226 Difference]: Without dead ends: 14862 [2021-11-23 03:50:42,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:42,230 INFO L933 BasicCegarLoop]: 2398 mSDtfsCounter, 1990 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1990 SdHoareTripleChecker+Valid, 4264 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:50:42,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1990 Valid, 4264 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 442 Invalid, 1 Unknown, 0 Unchecked, 5.1s Time] [2021-11-23 03:50:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14862 states. [2021-11-23 03:50:43,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14862 to 14859. [2021-11-23 03:50:43,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14859 states, 8835 states have (on average 1.2606677985285795) internal successors, (11138), 9126 states have internal predecessors, (11138), 4943 states have call successors, (4943), 1084 states have call predecessors, (4943), 1080 states have return successors, (5058), 4887 states have call predecessors, (5058), 4942 states have call successors, (5058) [2021-11-23 03:50:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14859 states to 14859 states and 21139 transitions. [2021-11-23 03:50:43,323 INFO L78 Accepts]: Start accepts. Automaton has 14859 states and 21139 transitions. Word has length 172 [2021-11-23 03:50:43,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:50:43,324 INFO L470 AbstractCegarLoop]: Abstraction has 14859 states and 21139 transitions. [2021-11-23 03:50:43,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (37), 2 states have call predecessors, (37), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 03:50:43,325 INFO L276 IsEmpty]: Start isEmpty. Operand 14859 states and 21139 transitions. [2021-11-23 03:50:43,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2021-11-23 03:50:43,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:50:43,344 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 3, 3, 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] [2021-11-23 03:50:43,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:50:43,345 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:50:43,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:50:43,346 INFO L85 PathProgramCache]: Analyzing trace with hash -2087335386, now seen corresponding path program 1 times [2021-11-23 03:50:43,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:50:43,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669959814] [2021-11-23 03:50:43,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:43,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:50:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2021-11-23 03:50:43,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:50:43,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669959814] [2021-11-23 03:50:43,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669959814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:50:43,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:50:43,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:50:43,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852428606] [2021-11-23 03:50:43,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:50:43,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:50:43,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:50:43,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:50:43,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:43,633 INFO L87 Difference]: Start difference. First operand 14859 states and 21139 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 03:50:45,691 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:50:49,287 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:50:50,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:50:50,339 INFO L93 Difference]: Finished difference Result 29695 states and 42245 transitions. [2021-11-23 03:50:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:50:50,339 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 179 [2021-11-23 03:50:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:50:50,442 INFO L225 Difference]: With dead ends: 29695 [2021-11-23 03:50:50,442 INFO L226 Difference]: Without dead ends: 14856 [2021-11-23 03:50:50,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:50:50,522 INFO L933 BasicCegarLoop]: 1882 mSDtfsCounter, 0 mSDsluCounter, 2089 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:50:50,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3761 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 424 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 03:50:50,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14856 states. [2021-11-23 03:50:51,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14856 to 14852. [2021-11-23 03:50:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14852 states, 8828 states have (on average 1.260421386497508) internal successors, (11127), 9121 states have internal predecessors, (11127), 4943 states have call successors, (4943), 1084 states have call predecessors, (4943), 1080 states have return successors, (5058), 4885 states have call predecessors, (5058), 4942 states have call successors, (5058) [2021-11-23 03:50:51,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14852 states to 14852 states and 21128 transitions. [2021-11-23 03:50:51,538 INFO L78 Accepts]: Start accepts. Automaton has 14852 states and 21128 transitions. Word has length 179 [2021-11-23 03:50:51,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:50:51,539 INFO L470 AbstractCegarLoop]: Abstraction has 14852 states and 21128 transitions. [2021-11-23 03:50:51,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 3 states have internal predecessors, (87), 2 states have call successors, (36), 2 states have call predecessors, (36), 1 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2021-11-23 03:50:51,540 INFO L276 IsEmpty]: Start isEmpty. Operand 14852 states and 21128 transitions. [2021-11-23 03:50:51,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2021-11-23 03:50:51,582 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:50:51,582 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 5, 3, 3, 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] [2021-11-23 03:50:51,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:50:51,583 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:50:51,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:50:51,583 INFO L85 PathProgramCache]: Analyzing trace with hash 994754935, now seen corresponding path program 1 times [2021-11-23 03:50:51,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:50:51,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388188303] [2021-11-23 03:50:51,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:50:51,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:50:51,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:50:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 647 trivial. 0 not checked. [2021-11-23 03:50:52,162 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:50:52,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388188303] [2021-11-23 03:50:52,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388188303] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:50:52,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:50:52,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-23 03:50:52,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645139171] [2021-11-23 03:50:52,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:50:52,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-23 03:50:52,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:50:52,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-23 03:50:52,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:50:52,165 INFO L87 Difference]: Start difference. First operand 14852 states and 21128 transitions. Second operand has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-23 03:50:54,225 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:50:58,161 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:51:02,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:02,156 INFO L93 Difference]: Finished difference Result 26339 states and 37577 transitions. [2021-11-23 03:51:02,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 03:51:02,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) Word has length 235 [2021-11-23 03:51:02,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:02,219 INFO L225 Difference]: With dead ends: 26339 [2021-11-23 03:51:02,219 INFO L226 Difference]: Without dead ends: 11511 [2021-11-23 03:51:02,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:51:02,279 INFO L933 BasicCegarLoop]: 1571 mSDtfsCounter, 7 mSDsluCounter, 6557 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 7522 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:02,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 7522 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1279 Invalid, 1 Unknown, 0 Unchecked, 9.4s Time] [2021-11-23 03:51:02,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11511 states. [2021-11-23 03:51:02,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11511 to 11511. [2021-11-23 03:51:02,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11511 states, 6854 states have (on average 1.257659760723665) internal successors, (8620), 7072 states have internal predecessors, (8620), 3766 states have call successors, (3766), 903 states have call predecessors, (3766), 890 states have return successors, (3845), 3715 states have call predecessors, (3845), 3765 states have call successors, (3845) [2021-11-23 03:51:02,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11511 states to 11511 states and 16231 transitions. [2021-11-23 03:51:02,963 INFO L78 Accepts]: Start accepts. Automaton has 11511 states and 16231 transitions. Word has length 235 [2021-11-23 03:51:02,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:02,963 INFO L470 AbstractCegarLoop]: Abstraction has 11511 states and 16231 transitions. [2021-11-23 03:51:02,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.2) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (46), 3 states have call predecessors, (46), 1 states have return successors, (36), 3 states have call predecessors, (36), 3 states have call successors, (36) [2021-11-23 03:51:02,964 INFO L276 IsEmpty]: Start isEmpty. Operand 11511 states and 16231 transitions. [2021-11-23 03:51:03,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2021-11-23 03:51:03,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:03,026 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 10, 8, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:03,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:51:03,026 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:03,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:03,027 INFO L85 PathProgramCache]: Analyzing trace with hash -329515058, now seen corresponding path program 1 times [2021-11-23 03:51:03,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:03,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052200102] [2021-11-23 03:51:03,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:03,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:03,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:03,317 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 841 trivial. 0 not checked. [2021-11-23 03:51:03,317 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:03,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052200102] [2021-11-23 03:51:03,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1052200102] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:51:03,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127816859] [2021-11-23 03:51:03,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:03,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:03,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:03,323 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:51:03,349 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 03:51:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:04,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 5718 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-23 03:51:04,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:51:05,572 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 538 trivial. 0 not checked. [2021-11-23 03:51:05,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:51:05,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127816859] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:05,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:51:05,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2021-11-23 03:51:05,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346766357] [2021-11-23 03:51:05,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:05,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:51:05,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:51:05,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:51:05,575 INFO L87 Difference]: Start difference. First operand 11511 states and 16231 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-23 03:51:07,624 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:51:10,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:10,790 INFO L93 Difference]: Finished difference Result 29845 states and 42043 transitions. [2021-11-23 03:51:10,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:51:10,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) Word has length 370 [2021-11-23 03:51:10,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:10,880 INFO L225 Difference]: With dead ends: 29845 [2021-11-23 03:51:10,881 INFO L226 Difference]: Without dead ends: 18358 [2021-11-23 03:51:10,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 372 GetRequests, 370 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:51:10,913 INFO L933 BasicCegarLoop]: 2053 mSDtfsCounter, 1644 mSDsluCounter, 1708 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1644 SdHoareTripleChecker+Valid, 3585 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:10,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1644 Valid, 3585 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 400 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 03:51:10,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18358 states. [2021-11-23 03:51:11,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18358 to 18355. [2021-11-23 03:51:11,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18355 states, 10916 states have (on average 1.2532979113228289) internal successors, (13681), 11252 states have internal predecessors, (13681), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1429 states have return successors, (6138), 5946 states have call predecessors, (6138), 6008 states have call successors, (6138) [2021-11-23 03:51:11,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18355 states to 18355 states and 25828 transitions. [2021-11-23 03:51:11,921 INFO L78 Accepts]: Start accepts. Automaton has 18355 states and 25828 transitions. Word has length 370 [2021-11-23 03:51:11,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:11,922 INFO L470 AbstractCegarLoop]: Abstraction has 18355 states and 25828 transitions. [2021-11-23 03:51:11,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 3 states have internal predecessors, (145), 3 states have call successors, (67), 3 states have call predecessors, (67), 3 states have return successors, (60), 3 states have call predecessors, (60), 3 states have call successors, (60) [2021-11-23 03:51:11,923 INFO L276 IsEmpty]: Start isEmpty. Operand 18355 states and 25828 transitions. [2021-11-23 03:51:12,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2021-11-23 03:51:12,025 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:12,025 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 10, 9, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:12,074 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 03:51:12,241 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 03:51:12,242 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:12,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:12,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1067880242, now seen corresponding path program 1 times [2021-11-23 03:51:12,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:12,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152877669] [2021-11-23 03:51:12,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:12,243 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:12,906 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 859 trivial. 0 not checked. [2021-11-23 03:51:12,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:12,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152877669] [2021-11-23 03:51:12,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152877669] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:51:12,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1030463422] [2021-11-23 03:51:12,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:12,907 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:12,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:12,908 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:51:12,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 03:51:14,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:14,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 5740 conjuncts, 31 conjunts are in the unsatisfiable core [2021-11-23 03:51:14,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:51:15,512 INFO L134 CoverageAnalysis]: Checked inductivity of 867 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 818 trivial. 0 not checked. [2021-11-23 03:51:15,513 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:51:15,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1030463422] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:15,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:51:15,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2021-11-23 03:51:15,514 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379108170] [2021-11-23 03:51:15,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:15,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:51:15,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:15,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:51:15,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:51:15,516 INFO L87 Difference]: Start difference. First operand 18355 states and 25828 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-23 03:51:17,571 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:51:20,240 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:51:23,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:51:24,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:24,652 INFO L93 Difference]: Finished difference Result 36774 states and 52173 transitions. [2021-11-23 03:51:24,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:51:24,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) Word has length 374 [2021-11-23 03:51:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:24,733 INFO L225 Difference]: With dead ends: 36774 [2021-11-23 03:51:24,733 INFO L226 Difference]: Without dead ends: 18451 [2021-11-23 03:51:24,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 376 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:51:24,881 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 2 mSDsluCounter, 5252 mSDsCounter, 0 mSdLazyCounter, 767 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 767 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:24,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6287 Invalid, 769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 767 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2021-11-23 03:51:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18451 states. [2021-11-23 03:51:25,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18451 to 18419. [2021-11-23 03:51:25,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18419 states, 10962 states have (on average 1.252234993614304) internal successors, (13727), 11302 states have internal predecessors, (13727), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1447 states have return successors, (6272), 5960 states have call predecessors, (6272), 6008 states have call successors, (6272) [2021-11-23 03:51:25,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18419 states to 18419 states and 26008 transitions. [2021-11-23 03:51:25,877 INFO L78 Accepts]: Start accepts. Automaton has 18419 states and 26008 transitions. Word has length 374 [2021-11-23 03:51:25,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:25,880 INFO L470 AbstractCegarLoop]: Abstraction has 18419 states and 26008 transitions. [2021-11-23 03:51:25,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (69), 2 states have call predecessors, (69), 3 states have return successors, (62), 3 states have call predecessors, (62), 2 states have call successors, (62) [2021-11-23 03:51:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand 18419 states and 26008 transitions. [2021-11-23 03:51:25,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2021-11-23 03:51:25,951 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:25,951 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:26,002 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 03:51:26,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:26,167 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:26,168 INFO L85 PathProgramCache]: Analyzing trace with hash -694181837, now seen corresponding path program 1 times [2021-11-23 03:51:26,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:26,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669030805] [2021-11-23 03:51:26,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:26,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:26,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:26,860 INFO L134 CoverageAnalysis]: Checked inductivity of 899 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-11-23 03:51:26,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:26,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669030805] [2021-11-23 03:51:26,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669030805] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:26,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:51:26,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:51:26,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243737490] [2021-11-23 03:51:26,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:26,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:51:26,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:26,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:51:26,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:51:26,863 INFO L87 Difference]: Start difference. First operand 18419 states and 26008 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-23 03:51:28,919 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:51:30,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:30,979 INFO L93 Difference]: Finished difference Result 36820 states and 52323 transitions. [2021-11-23 03:51:30,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:51:30,980 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 388 [2021-11-23 03:51:30,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:31,061 INFO L225 Difference]: With dead ends: 36820 [2021-11-23 03:51:31,061 INFO L226 Difference]: Without dead ends: 18433 [2021-11-23 03:51:31,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:51:31,120 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 0 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 373 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3154 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 373 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:31,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 3154 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 373 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 03:51:31,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18433 states. [2021-11-23 03:51:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18433 to 18433. [2021-11-23 03:51:32,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18433 states, 10976 states have (on average 1.2519132653061225) internal successors, (13741), 11316 states have internal predecessors, (13741), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1447 states have return successors, (6272), 5960 states have call predecessors, (6272), 6008 states have call successors, (6272) [2021-11-23 03:51:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18433 states to 18433 states and 26022 transitions. [2021-11-23 03:51:32,246 INFO L78 Accepts]: Start accepts. Automaton has 18433 states and 26022 transitions. Word has length 388 [2021-11-23 03:51:32,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:32,247 INFO L470 AbstractCegarLoop]: Abstraction has 18433 states and 26022 transitions. [2021-11-23 03:51:32,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (71), 2 states have call predecessors, (71), 1 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-23 03:51:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 18433 states and 26022 transitions. [2021-11-23 03:51:32,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2021-11-23 03:51:32,301 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:32,301 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:32,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:51:32,302 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:32,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:32,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1726071906, now seen corresponding path program 1 times [2021-11-23 03:51:32,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:32,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814171716] [2021-11-23 03:51:32,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:32,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:32,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:32,972 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 899 trivial. 0 not checked. [2021-11-23 03:51:32,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:32,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814171716] [2021-11-23 03:51:32,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814171716] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:51:32,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385482168] [2021-11-23 03:51:32,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:32,973 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:32,973 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:32,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:51:32,997 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 03:51:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:34,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 5807 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-23 03:51:34,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:51:35,578 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 72 proven. 0 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2021-11-23 03:51:35,578 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:51:35,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385482168] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:35,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:51:35,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2021-11-23 03:51:35,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465366266] [2021-11-23 03:51:35,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:35,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:51:35,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:35,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:51:35,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:51:35,583 INFO L87 Difference]: Start difference. First operand 18433 states and 26022 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-23 03:51:37,622 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:51:40,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:40,749 INFO L93 Difference]: Finished difference Result 36894 states and 52503 transitions. [2021-11-23 03:51:40,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:51:40,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) Word has length 389 [2021-11-23 03:51:40,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:40,805 INFO L225 Difference]: With dead ends: 36894 [2021-11-23 03:51:40,805 INFO L226 Difference]: Without dead ends: 18493 [2021-11-23 03:51:40,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 389 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:51:40,849 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 1 mSDsluCounter, 1759 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3152 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:40,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 3152 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 376 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2021-11-23 03:51:40,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18493 states. [2021-11-23 03:51:41,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18493 to 18453. [2021-11-23 03:51:41,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18453 states, 10996 states have (on average 1.2514550745725719) internal successors, (13761), 11336 states have internal predecessors, (13761), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1447 states have return successors, (6272), 5960 states have call predecessors, (6272), 6008 states have call successors, (6272) [2021-11-23 03:51:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18453 states to 18453 states and 26042 transitions. [2021-11-23 03:51:41,754 INFO L78 Accepts]: Start accepts. Automaton has 18453 states and 26042 transitions. Word has length 389 [2021-11-23 03:51:41,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:41,756 INFO L470 AbstractCegarLoop]: Abstraction has 18453 states and 26042 transitions. [2021-11-23 03:51:41,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (71), 2 states have call predecessors, (71), 2 states have return successors, (64), 2 states have call predecessors, (64), 2 states have call successors, (64) [2021-11-23 03:51:41,757 INFO L276 IsEmpty]: Start isEmpty. Operand 18453 states and 26042 transitions. [2021-11-23 03:51:41,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 395 [2021-11-23 03:51:41,809 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:41,810 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 11, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:41,859 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 03:51:42,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:42,035 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:42,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:42,036 INFO L85 PathProgramCache]: Analyzing trace with hash 340596561, now seen corresponding path program 1 times [2021-11-23 03:51:42,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:42,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315827978] [2021-11-23 03:51:42,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:42,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:42,597 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 920 trivial. 0 not checked. [2021-11-23 03:51:42,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:42,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315827978] [2021-11-23 03:51:42,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315827978] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:51:42,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [456975008] [2021-11-23 03:51:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:42,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:42,599 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:42,599 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:51:42,619 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 03:51:44,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:44,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 5831 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:51:44,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:51:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 921 backedges. 314 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2021-11-23 03:51:44,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 03:51:44,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [456975008] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:51:44,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 03:51:44,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-23 03:51:44,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389928233] [2021-11-23 03:51:44,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:51:44,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:51:44,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:44,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:51:44,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-23 03:51:44,994 INFO L87 Difference]: Start difference. First operand 18453 states and 26042 transitions. Second operand has 4 states, 3 states have (on average 50.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 03:51:47,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:51:50,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:51:50,141 INFO L93 Difference]: Finished difference Result 36884 states and 52054 transitions. [2021-11-23 03:51:50,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:51:50,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 50.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) Word has length 394 [2021-11-23 03:51:50,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:51:50,198 INFO L225 Difference]: With dead ends: 36884 [2021-11-23 03:51:50,198 INFO L226 Difference]: Without dead ends: 18454 [2021-11-23 03:51:50,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-23 03:51:50,233 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1 mSDsluCounter, 3520 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4727 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:51:50,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 4727 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 564 Invalid, 1 Unknown, 0 Unchecked, 4.7s Time] [2021-11-23 03:51:50,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18454 states. [2021-11-23 03:51:50,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18454 to 18454. [2021-11-23 03:51:50,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18454 states, 10997 states have (on average 1.2514322087842138) internal successors, (13762), 11337 states have internal predecessors, (13762), 6009 states have call successors, (6009), 1442 states have call predecessors, (6009), 1447 states have return successors, (6272), 5960 states have call predecessors, (6272), 6008 states have call successors, (6272) [2021-11-23 03:51:50,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18454 states to 18454 states and 26043 transitions. [2021-11-23 03:51:50,954 INFO L78 Accepts]: Start accepts. Automaton has 18454 states and 26043 transitions. Word has length 394 [2021-11-23 03:51:50,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:51:50,954 INFO L470 AbstractCegarLoop]: Abstraction has 18454 states and 26043 transitions. [2021-11-23 03:51:50,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 50.0) internal successors, (150), 4 states have internal predecessors, (150), 2 states have call successors, (72), 2 states have call predecessors, (72), 3 states have return successors, (65), 2 states have call predecessors, (65), 2 states have call successors, (65) [2021-11-23 03:51:50,955 INFO L276 IsEmpty]: Start isEmpty. Operand 18454 states and 26043 transitions. [2021-11-23 03:51:51,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2021-11-23 03:51:51,003 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:51:51,003 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 11, 10, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:51:51,040 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 03:51:51,222 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:51,223 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:51:51,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:51:51,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1717329485, now seen corresponding path program 1 times [2021-11-23 03:51:51,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:51:51,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053471256] [2021-11-23 03:51:51,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:51,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:51:51,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2021-11-23 03:51:51,638 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:51:51,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053471256] [2021-11-23 03:51:51,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053471256] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:51:51,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901742877] [2021-11-23 03:51:51,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:51:51,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:51:51,639 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:51:51,640 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:51:51,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 03:51:53,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:51:53,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 5849 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-23 03:51:53,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 03:51:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 78 proven. 1 refuted. 0 times theorem prover too weak. 854 trivial. 0 not checked. [2021-11-23 03:51:54,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 03:51:54,779 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 932 trivial. 0 not checked. [2021-11-23 03:51:54,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901742877] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 03:51:54,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1281897151] [2021-11-23 03:51:54,812 INFO L159 IcfgInterpreter]: Started Sifa with 231 locations of interest [2021-11-23 03:51:54,813 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 03:51:54,830 FATAL L? ?]: Ignoring exception! java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:268) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:88) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:610) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:413) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:393) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:263) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:176) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:155) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2021-11-23 03:51:54,833 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-23 03:51:54,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 8 [2021-11-23 03:51:54,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169671637] [2021-11-23 03:51:54,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-23 03:51:54,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-23 03:51:54,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:51:54,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-23 03:51:54,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-23 03:51:54,837 INFO L87 Difference]: Start difference. First operand 18454 states and 26043 transitions. Second operand has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 4 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) [2021-11-23 03:51:56,878 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:51:59,764 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:52:01,038 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:52:02,716 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:52:04,741 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:52:06,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:52:06,722 INFO L93 Difference]: Finished difference Result 37069 states and 52772 transitions. [2021-11-23 03:52:06,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-23 03:52:06,723 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 4 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) Word has length 397 [2021-11-23 03:52:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:52:06,781 INFO L225 Difference]: With dead ends: 37069 [2021-11-23 03:52:06,782 INFO L226 Difference]: Without dead ends: 18648 [2021-11-23 03:52:06,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 797 GetRequests, 790 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:52:06,834 INFO L933 BasicCegarLoop]: 1581 mSDtfsCounter, 4 mSDsluCounter, 7035 mSDsCounter, 0 mSdLazyCounter, 954 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 7882 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 954 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2021-11-23 03:52:06,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 7882 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 954 Invalid, 2 Unknown, 0 Unchecked, 11.2s Time] [2021-11-23 03:52:06,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18648 states. [2021-11-23 03:52:07,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18648 to 18648. [2021-11-23 03:52:07,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18648 states, 11131 states have (on average 1.2484053544155962) internal successors, (13896), 11471 states have internal predecessors, (13896), 6069 states have call successors, (6069), 1442 states have call predecessors, (6069), 1447 states have return successors, (6332), 6020 states have call predecessors, (6332), 6068 states have call successors, (6332) [2021-11-23 03:52:07,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18648 states to 18648 states and 26297 transitions. [2021-11-23 03:52:07,643 INFO L78 Accepts]: Start accepts. Automaton has 18648 states and 26297 transitions. Word has length 397 [2021-11-23 03:52:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:52:07,644 INFO L470 AbstractCegarLoop]: Abstraction has 18648 states and 26297 transitions. [2021-11-23 03:52:07,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.125) internal successors, (177), 8 states have internal predecessors, (177), 4 states have call successors, (94), 2 states have call predecessors, (94), 2 states have return successors, (87), 4 states have call predecessors, (87), 4 states have call successors, (87) [2021-11-23 03:52:07,644 INFO L276 IsEmpty]: Start isEmpty. Operand 18648 states and 26297 transitions. [2021-11-23 03:52:07,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2021-11-23 03:52:07,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:52:07,824 INFO L514 BasicCegarLoop]: trace histogram [18, 18, 18, 14, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:52:07,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-23 03:52:08,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:52:08,059 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:52:08,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:52:08,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2110693579, now seen corresponding path program 2 times [2021-11-23 03:52:08,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:52:08,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320288212] [2021-11-23 03:52:08,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:52:08,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:52:08,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:52:08,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1028 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 1006 trivial. 0 not checked. [2021-11-23 03:52:08,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:52:08,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320288212] [2021-11-23 03:52:08,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1320288212] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 03:52:08,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713998618] [2021-11-23 03:52:08,547 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-23 03:52:08,547 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 03:52:08,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:52:08,548 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 03:52:08,569 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_89f70c5d-ae12-4369-8f46-fd5d7ebe9df3/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process