./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS --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 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:09:30,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:09:30,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:09:30,583 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:09:30,584 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:09:30,585 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:09:30,586 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:09:30,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:09:30,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:09:30,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:09:30,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:09:30,594 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:09:30,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:09:30,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:09:30,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:09:30,603 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:09:30,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:09:30,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:09:30,607 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:09:30,609 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:09:30,614 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:09:30,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:09:30,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:09:30,621 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:09:30,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:09:30,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:09:30,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:09:30,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:09:30,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:09:30,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:09:30,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:09:30,640 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:09:30,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:09:30,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:09:30,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:09:30,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:09:30,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:09:30,648 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:09:30,648 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:09:30,649 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:09:30,650 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:09:30,651 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 07:09:30,703 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:09:30,703 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:09:30,704 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:09:30,704 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:09:30,705 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:09:30,705 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:09:30,705 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:09:30,705 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:09:30,706 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:09:30,706 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:09:30,706 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:09:30,706 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:09:30,706 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:09:30,707 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:09:30,707 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:09:30,707 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:09:30,707 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:09:30,707 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:09:30,708 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:09:30,708 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:09:30,709 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:09:30,709 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:09:30,709 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:09:30,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:09:30,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:09:30,714 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:09:30,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:09:30,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:09:30,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:09:30,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:09:30,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:09:30,717 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:09:30,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:09:30,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:09:30,717 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:09:30,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:09:30,719 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:09:30,719 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:09:30,719 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6932181a2a9c8d4d7c700844e1db6a95829edf2ea099e17754a10b04a114b5cd [2022-11-19 07:09:31,025 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:09:31,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:09:31,056 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:09:31,057 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:09:31,058 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:09:31,060 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2022-11-19 07:09:31,148 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/data/7415cab05/cff3a4f76ffe4866bcf1942a32b595bc/FLAG2b72b9077 [2022-11-19 07:09:32,147 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:09:32,148 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2022-11-19 07:09:32,202 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/data/7415cab05/cff3a4f76ffe4866bcf1942a32b595bc/FLAG2b72b9077 [2022-11-19 07:09:32,568 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/data/7415cab05/cff3a4f76ffe4866bcf1942a32b595bc [2022-11-19 07:09:32,571 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:09:32,574 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:09:32,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:09:32,577 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:09:32,581 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:09:32,582 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:32" (1/1) ... [2022-11-19 07:09:32,583 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f0142c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:32, skipping insertion in model container [2022-11-19 07:09:32,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:09:32" (1/1) ... [2022-11-19 07:09:32,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:09:32,750 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:09:34,605 WARN L234 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_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2022-11-19 07:09:34,658 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:34,698 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:09:35,158 WARN L234 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_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i[213066,213079] [2022-11-19 07:09:35,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:09:35,309 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:09:35,309 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35 WrapperNode [2022-11-19 07:09:35,309 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:09:35,311 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:09:35,311 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:09:35,311 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:09:35,319 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:35,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:35,608 INFO L138 Inliner]: procedures = 222, calls = 2703, calls flagged for inlining = 88, calls inlined = 85, statements flattened = 5126 [2022-11-19 07:09:35,609 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:09:35,610 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:09:35,610 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:09:35,611 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:09:35,622 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:35,623 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:35,681 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:35,682 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:35,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:35,913 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:35,956 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:35,983 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:36,028 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:09:36,030 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:09:36,030 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:09:36,030 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:09:36,083 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (1/1) ... [2022-11-19 07:09:36,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:09:36,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:09:36,139 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:09:36,170 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:09:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure gr_free_dma_desc_chain [2022-11-19 07:09:36,193 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_free_dma_desc_chain [2022-11-19 07:09:36,193 INFO L130 BoogieDeclarations]: Found specification of procedure gr_finish_request [2022-11-19 07:09:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_finish_request [2022-11-19 07:09:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 07:09:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure gr_queue [2022-11-19 07:09:36,194 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_queue [2022-11-19 07:09:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 07:09:36,194 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 07:09:36,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 07:09:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure seq_puts [2022-11-19 07:09:36,195 INFO L138 BoogieDeclarations]: Found implementation of procedure seq_puts [2022-11-19 07:09:36,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 07:09:36,195 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 07:09:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep_halt_wedge [2022-11-19 07:09:36,196 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep_halt_wedge [2022-11-19 07:09:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 07:09:36,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 07:09:36,196 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 07:09:36,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 07:09:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2022-11-19 07:09:36,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2022-11-19 07:09:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure usb_speed_string [2022-11-19 07:09:36,197 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_speed_string [2022-11-19 07:09:36,197 INFO L130 BoogieDeclarations]: Found specification of procedure gr_control_stall [2022-11-19 07:09:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_control_stall [2022-11-19 07:09:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure gr_stop_activity [2022-11-19 07:09:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_stop_activity [2022-11-19 07:09:36,198 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 07:09:36,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 07:09:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep_enable [2022-11-19 07:09:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep_enable [2022-11-19 07:09:36,199 INFO L130 BoogieDeclarations]: Found specification of procedure gr_set_halt_wedge [2022-11-19 07:09:36,199 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_set_halt_wedge [2022-11-19 07:09:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 07:09:36,200 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 07:09:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-11-19 07:09:36,200 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-11-19 07:09:36,200 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 07:09:36,200 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 07:09:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure gr_queue_int [2022-11-19 07:09:36,201 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_queue_int [2022-11-19 07:09:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 07:09:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-19 07:09:36,201 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-19 07:09:36,201 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dequeue [2022-11-19 07:09:36,202 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dequeue [2022-11-19 07:09:36,202 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep_remove [2022-11-19 07:09:36,203 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep_remove [2022-11-19 07:09:36,204 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32be [2022-11-19 07:09:36,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32be [2022-11-19 07:09:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure platform_get_irq [2022-11-19 07:09:36,205 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_get_irq [2022-11-19 07:09:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 07:09:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 07:09:36,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 07:09:36,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 07:09:36,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 07:09:36,206 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_setup [2022-11-19 07:09:36,206 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_setup [2022-11-19 07:09:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 07:09:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 07:09:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 07:09:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 07:09:36,207 INFO L130 BoogieDeclarations]: Found specification of procedure gr_alloc_request [2022-11-19 07:09:36,207 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_alloc_request [2022-11-19 07:09:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure gr_wakeup [2022-11-19 07:09:36,208 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_wakeup [2022-11-19 07:09:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-19 07:09:36,208 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-19 07:09:36,208 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep_reset [2022-11-19 07:09:36,209 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep_reset [2022-11-19 07:09:36,209 INFO L130 BoogieDeclarations]: Found specification of procedure gr_udc_stop [2022-11-19 07:09:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_udc_stop [2022-11-19 07:09:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep_nuke [2022-11-19 07:09:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep_nuke [2022-11-19 07:09:36,210 INFO L130 BoogieDeclarations]: Found specification of procedure gr_fifo_flush [2022-11-19 07:09:36,210 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_fifo_flush [2022-11-19 07:09:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep_disable [2022-11-19 07:09:36,211 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep_disable [2022-11-19 07:09:36,211 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 07:09:36,212 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 07:09:36,212 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0out_requeue [2022-11-19 07:09:36,213 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0out_requeue [2022-11-19 07:09:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure gr_vbus_connected [2022-11-19 07:09:36,213 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_vbus_connected [2022-11-19 07:09:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure gr_enable_vbus_detect [2022-11-19 07:09:36,213 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_enable_vbus_detect [2022-11-19 07:09:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 07:09:36,213 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-19 07:09:36,213 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-19 07:09:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 07:09:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure gr_irq_handler [2022-11-19 07:09:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_irq_handler [2022-11-19 07:09:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure gr_set_wedge [2022-11-19 07:09:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_set_wedge [2022-11-19 07:09:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure devm_request_threaded_irq [2022-11-19 07:09:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_request_threaded_irq [2022-11-19 07:09:36,214 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dfs_open [2022-11-19 07:09:36,214 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dfs_open [2022-11-19 07:09:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32be [2022-11-19 07:09:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32be [2022-11-19 07:09:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_respond_empty [2022-11-19 07:09:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_respond_empty [2022-11-19 07:09:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 07:09:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure gr_irq [2022-11-19 07:09:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_irq [2022-11-19 07:09:36,215 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep_init [2022-11-19 07:09:36,215 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep_init [2022-11-19 07:09:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-11-19 07:09:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-11-19 07:09:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2022-11-19 07:09:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2022-11-19 07:09:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 07:09:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 07:09:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_respond [2022-11-19 07:09:36,216 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_respond [2022-11-19 07:09:36,216 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 07:09:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure single_release [2022-11-19 07:09:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure single_release [2022-11-19 07:09:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure gr_disable_interrupts_and_pullup [2022-11-19 07:09:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_disable_interrupts_and_pullup [2022-11-19 07:09:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 07:09:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 07:09:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 07:09:36,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 07:09:36,217 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 07:09:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure gr_request_irq [2022-11-19 07:09:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_request_irq [2022-11-19 07:09:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure gr_add_dma_desc [2022-11-19 07:09:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_add_dma_desc [2022-11-19 07:09:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 07:09:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 07:09:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:09:36,218 INFO L130 BoogieDeclarations]: Found specification of procedure usb_gadget_set_state [2022-11-19 07:09:36,218 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_gadget_set_state [2022-11-19 07:09:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure gr_abort_dma [2022-11-19 07:09:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_abort_dma [2022-11-19 07:09:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 07:09:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0state_string [2022-11-19 07:09:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0state_string [2022-11-19 07:09:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-19 07:09:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-19 07:09:36,219 INFO L130 BoogieDeclarations]: Found specification of procedure gr_fifo_status [2022-11-19 07:09:36,219 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_fifo_status [2022-11-19 07:09:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:09:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 07:09:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-19 07:09:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-19 07:09:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure gr_set_address [2022-11-19 07:09:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_set_address [2022-11-19 07:09:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dbgprint_request [2022-11-19 07:09:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dbgprint_request [2022-11-19 07:09:36,220 INFO L130 BoogieDeclarations]: Found specification of procedure gr_free_request [2022-11-19 07:09:36,220 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_free_request [2022-11-19 07:09:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure gr_udc_start [2022-11-19 07:09:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_udc_start [2022-11-19 07:09:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure gr_set_ep0state [2022-11-19 07:09:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_set_ep0state [2022-11-19 07:09:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure platform_set_drvdata [2022-11-19 07:09:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure platform_set_drvdata [2022-11-19 07:09:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure gr_dma_advance [2022-11-19 07:09:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_dma_advance [2022-11-19 07:09:36,221 INFO L130 BoogieDeclarations]: Found specification of procedure devm_kzalloc [2022-11-19 07:09:36,221 INFO L138 BoogieDeclarations]: Found implementation of procedure devm_kzalloc [2022-11-19 07:09:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure of_property_read_u32_index [2022-11-19 07:09:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure of_property_read_u32_index [2022-11-19 07:09:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure gr_get_frame [2022-11-19 07:09:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_get_frame [2022-11-19 07:09:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure gr_probe [2022-11-19 07:09:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_probe [2022-11-19 07:09:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure usb_ep_set_maxpacket_limit [2022-11-19 07:09:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_ep_set_maxpacket_limit [2022-11-19 07:09:36,222 INFO L130 BoogieDeclarations]: Found specification of procedure gr_remove [2022-11-19 07:09:36,222 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_remove [2022-11-19 07:09:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure gr_ep0_respond_u16 [2022-11-19 07:09:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_ep0_respond_u16 [2022-11-19 07:09:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 07:09:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 07:09:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:09:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 07:09:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:09:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure gr_start_dma [2022-11-19 07:09:36,223 INFO L138 BoogieDeclarations]: Found implementation of procedure gr_start_dma [2022-11-19 07:09:36,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:09:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:09:36,224 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 07:09:36,224 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 07:09:37,100 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:09:37,106 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:09:38,569 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 07:09:43,524 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:09:44,960 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:09:44,960 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-19 07:09:44,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:44 BoogieIcfgContainer [2022-11-19 07:09:44,976 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:09:44,978 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:09:44,978 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:09:44,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:09:44,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:09:32" (1/3) ... [2022-11-19 07:09:44,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74babac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:44, skipping insertion in model container [2022-11-19 07:09:44,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:09:35" (2/3) ... [2022-11-19 07:09:44,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@74babac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:09:44, skipping insertion in model container [2022-11-19 07:09:44,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:09:44" (3/3) ... [2022-11-19 07:09:44,996 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--usb--gadget--udc--gr_udc.ko-entry_point.cil.out.i [2022-11-19 07:09:45,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:09:45,019 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:09:45,133 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:09:45,146 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@45ead86, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:09:45,146 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:09:45,157 INFO L276 IsEmpty]: Start isEmpty. Operand has 1185 states, 746 states have (on average 1.376675603217158) internal successors, (1027), 790 states have internal predecessors, (1027), 352 states have call successors, (352), 86 states have call predecessors, (352), 85 states have return successors, (342), 330 states have call predecessors, (342), 342 states have call successors, (342) [2022-11-19 07:09:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-19 07:09:45,190 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:45,191 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:45,192 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:45,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:45,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1127994824, now seen corresponding path program 1 times [2022-11-19 07:09:45,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:45,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834426765] [2022-11-19 07:09:45,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:45,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:45,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2022-11-19 07:09:46,357 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:46,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834426765] [2022-11-19 07:09:46,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834426765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:46,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:46,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:09:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108689299] [2022-11-19 07:09:46,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:46,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:09:46,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:46,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:09:46,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:09:46,428 INFO L87 Difference]: Start difference. First operand has 1185 states, 746 states have (on average 1.376675603217158) internal successors, (1027), 790 states have internal predecessors, (1027), 352 states have call successors, (352), 86 states have call predecessors, (352), 85 states have return successors, (342), 330 states have call predecessors, (342), 342 states have call successors, (342) Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-19 07:09:50,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:09:50,117 INFO L93 Difference]: Finished difference Result 3397 states and 5038 transitions. [2022-11-19 07:09:50,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:09:50,122 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 132 [2022-11-19 07:09:50,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:09:50,155 INFO L225 Difference]: With dead ends: 3397 [2022-11-19 07:09:50,155 INFO L226 Difference]: Without dead ends: 2212 [2022-11-19 07:09:50,171 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:09:50,175 INFO L413 NwaCegarLoop]: 1862 mSDtfsCounter, 1549 mSDsluCounter, 1477 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:09:50,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 3339 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-19 07:09:50,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2212 states. [2022-11-19 07:09:50,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2212 to 2209. [2022-11-19 07:09:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2209 states, 1404 states have (on average 1.358974358974359) internal successors, (1908), 1467 states have internal predecessors, (1908), 641 states have call successors, (641), 164 states have call predecessors, (641), 163 states have return successors, (640), 616 states have call predecessors, (640), 640 states have call successors, (640) [2022-11-19 07:09:50,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2209 states to 2209 states and 3189 transitions. [2022-11-19 07:09:50,472 INFO L78 Accepts]: Start accepts. Automaton has 2209 states and 3189 transitions. Word has length 132 [2022-11-19 07:09:50,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:09:50,474 INFO L495 AbstractCegarLoop]: Abstraction has 2209 states and 3189 transitions. [2022-11-19 07:09:50,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 2 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-11-19 07:09:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 2209 states and 3189 transitions. [2022-11-19 07:09:50,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-19 07:09:50,497 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:09:50,498 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:09:50,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:09:50,499 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:09:50,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:09:50,500 INFO L85 PathProgramCache]: Analyzing trace with hash -170220246, now seen corresponding path program 1 times [2022-11-19 07:09:50,500 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:09:50,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249847403] [2022-11-19 07:09:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:09:50,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:09:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:09:51,642 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:09:51,644 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:09:51,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249847403] [2022-11-19 07:09:51,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249847403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:09:51,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:09:51,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:09:51,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814449208] [2022-11-19 07:09:51,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:09:51,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:09:51,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:09:51,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:09:51,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:09:51,651 INFO L87 Difference]: Start difference. First operand 2209 states and 3189 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:09:52,848 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:54,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:09:55,940 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:00,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:00,496 INFO L93 Difference]: Finished difference Result 6593 states and 9533 transitions. [2022-11-19 07:10:00,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:10:00,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 182 [2022-11-19 07:10:00,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:00,540 INFO L225 Difference]: With dead ends: 6593 [2022-11-19 07:10:00,540 INFO L226 Difference]: Without dead ends: 4411 [2022-11-19 07:10:00,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:00,557 INFO L413 NwaCegarLoop]: 1993 mSDtfsCounter, 1674 mSDsluCounter, 5462 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1678 SdHoareTripleChecker+Valid, 7455 SdHoareTripleChecker+Invalid, 755 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:00,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1678 Valid, 7455 Invalid, 755 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 752 Invalid, 1 Unknown, 0 Unchecked, 8.4s Time] [2022-11-19 07:10:00,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4411 states. [2022-11-19 07:10:00,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4411 to 4384. [2022-11-19 07:10:00,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 2791 states have (on average 1.361160874238624) internal successors, (3799), 2923 states have internal predecessors, (3799), 1267 states have call successors, (1267), 326 states have call predecessors, (1267), 325 states have return successors, (1274), 1210 states have call predecessors, (1274), 1266 states have call successors, (1274) [2022-11-19 07:10:00,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 6340 transitions. [2022-11-19 07:10:00,901 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 6340 transitions. Word has length 182 [2022-11-19 07:10:00,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:00,904 INFO L495 AbstractCegarLoop]: Abstraction has 4384 states and 6340 transitions. [2022-11-19 07:10:00,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 4 states have internal predecessors, (70), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 6340 transitions. [2022-11-19 07:10:00,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-19 07:10:00,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:00,916 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:00,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:10:00,916 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:00,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:00,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1095290871, now seen corresponding path program 1 times [2022-11-19 07:10:00,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:00,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107635685] [2022-11-19 07:10:00,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:00,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:01,933 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:10:01,933 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:01,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107635685] [2022-11-19 07:10:01,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107635685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:01,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:01,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:10:01,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780190620] [2022-11-19 07:10:01,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:01,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:01,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:01,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:01,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:01,942 INFO L87 Difference]: Start difference. First operand 4384 states and 6340 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:07,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:07,941 INFO L93 Difference]: Finished difference Result 10154 states and 14676 transitions. [2022-11-19 07:10:07,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:10:07,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 183 [2022-11-19 07:10:07,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:07,994 INFO L225 Difference]: With dead ends: 10154 [2022-11-19 07:10:07,994 INFO L226 Difference]: Without dead ends: 6602 [2022-11-19 07:10:08,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:08,019 INFO L413 NwaCegarLoop]: 1855 mSDtfsCounter, 1670 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1674 SdHoareTripleChecker+Valid, 7039 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:08,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1674 Valid, 7039 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-11-19 07:10:08,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6602 states. [2022-11-19 07:10:08,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6602 to 6565. [2022-11-19 07:10:08,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6565 states, 4186 states have (on average 1.3612040133779264) internal successors, (5698), 4377 states have internal predecessors, (5698), 1891 states have call successors, (1891), 488 states have call predecessors, (1891), 487 states have return successors, (1906), 1812 states have call predecessors, (1906), 1890 states have call successors, (1906) [2022-11-19 07:10:08,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6565 states to 6565 states and 9495 transitions. [2022-11-19 07:10:08,538 INFO L78 Accepts]: Start accepts. Automaton has 6565 states and 9495 transitions. Word has length 183 [2022-11-19 07:10:08,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:08,539 INFO L495 AbstractCegarLoop]: Abstraction has 6565 states and 9495 transitions. [2022-11-19 07:10:08,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:08,540 INFO L276 IsEmpty]: Start isEmpty. Operand 6565 states and 9495 transitions. [2022-11-19 07:10:08,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-19 07:10:08,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:08,549 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:08,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:10:08,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:08,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:08,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1830068019, now seen corresponding path program 1 times [2022-11-19 07:10:08,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:08,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4453600] [2022-11-19 07:10:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:08,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:09,342 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:10:09,342 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:09,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4453600] [2022-11-19 07:10:09,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4453600] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:09,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:09,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:10:09,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577239516] [2022-11-19 07:10:09,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:09,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:09,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:09,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:09,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:09,349 INFO L87 Difference]: Start difference. First operand 6565 states and 9495 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:11,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:12,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:17,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:17,088 INFO L93 Difference]: Finished difference Result 12345 states and 17835 transitions. [2022-11-19 07:10:17,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:10:17,089 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 184 [2022-11-19 07:10:17,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:17,133 INFO L225 Difference]: With dead ends: 12345 [2022-11-19 07:10:17,133 INFO L226 Difference]: Without dead ends: 6610 [2022-11-19 07:10:17,157 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:17,158 INFO L413 NwaCegarLoop]: 1855 mSDtfsCounter, 1668 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 7039 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:17,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 7039 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 711 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-19 07:10:17,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6610 states. [2022-11-19 07:10:17,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6610 to 6573. [2022-11-19 07:10:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6573 states, 4194 states have (on average 1.3605150214592274) internal successors, (5706), 4383 states have internal predecessors, (5706), 1889 states have call successors, (1889), 490 states have call predecessors, (1889), 489 states have return successors, (1904), 1812 states have call predecessors, (1904), 1888 states have call successors, (1904) [2022-11-19 07:10:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6573 states to 6573 states and 9499 transitions. [2022-11-19 07:10:17,593 INFO L78 Accepts]: Start accepts. Automaton has 6573 states and 9499 transitions. Word has length 184 [2022-11-19 07:10:17,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:17,595 INFO L495 AbstractCegarLoop]: Abstraction has 6573 states and 9499 transitions. [2022-11-19 07:10:17,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:17,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6573 states and 9499 transitions. [2022-11-19 07:10:17,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 07:10:17,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:17,605 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:17,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:10:17,605 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:17,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:17,606 INFO L85 PathProgramCache]: Analyzing trace with hash 343182562, now seen corresponding path program 1 times [2022-11-19 07:10:17,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:17,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232729866] [2022-11-19 07:10:17,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:17,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:18,500 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:10:18,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:18,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232729866] [2022-11-19 07:10:18,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [232729866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:18,501 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:18,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:10:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844476132] [2022-11-19 07:10:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:18,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:18,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:18,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:18,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:18,505 INFO L87 Difference]: Start difference. First operand 6573 states and 9499 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:24,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:10:26,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:26,390 INFO L93 Difference]: Finished difference Result 19731 states and 28523 transitions. [2022-11-19 07:10:26,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:10:26,391 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 185 [2022-11-19 07:10:26,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:26,507 INFO L225 Difference]: With dead ends: 19731 [2022-11-19 07:10:26,507 INFO L226 Difference]: Without dead ends: 13185 [2022-11-19 07:10:26,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:26,547 INFO L413 NwaCegarLoop]: 1845 mSDtfsCounter, 1673 mSDsluCounter, 5161 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1677 SdHoareTripleChecker+Valid, 7006 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:26,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1677 Valid, 7006 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-19 07:10:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13185 states. [2022-11-19 07:10:27,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13185 to 13122. [2022-11-19 07:10:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13122 states, 8373 states have (on average 1.361160874238624) internal successors, (11397), 8775 states have internal predecessors, (11397), 3765 states have call successors, (3765), 984 states have call predecessors, (3765), 983 states have return successors, (3796), 3588 states have call predecessors, (3796), 3764 states have call successors, (3796) [2022-11-19 07:10:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13122 states to 13122 states and 18958 transitions. [2022-11-19 07:10:27,530 INFO L78 Accepts]: Start accepts. Automaton has 13122 states and 18958 transitions. Word has length 185 [2022-11-19 07:10:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:27,530 INFO L495 AbstractCegarLoop]: Abstraction has 13122 states and 18958 transitions. [2022-11-19 07:10:27,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:27,531 INFO L276 IsEmpty]: Start isEmpty. Operand 13122 states and 18958 transitions. [2022-11-19 07:10:27,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-11-19 07:10:27,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:27,543 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:27,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:10:27,547 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:27,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:27,548 INFO L85 PathProgramCache]: Analyzing trace with hash -960714676, now seen corresponding path program 1 times [2022-11-19 07:10:27,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:27,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432573485] [2022-11-19 07:10:27,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:27,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:27,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2022-11-19 07:10:28,760 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:28,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432573485] [2022-11-19 07:10:28,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432573485] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:10:28,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1799695112] [2022-11-19 07:10:28,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:28,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:28,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:10:28,769 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:10:28,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:10:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:30,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 5198 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:10:30,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:10:30,800 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:10:30,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:10:30,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1799695112] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:30,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:10:30,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-11-19 07:10:30,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651829466] [2022-11-19 07:10:30,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:30,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:30,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:30,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:30,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:10:30,803 INFO L87 Difference]: Start difference. First operand 13122 states and 18958 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:10:32,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:38,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:38,571 INFO L93 Difference]: Finished difference Result 24648 states and 35586 transitions. [2022-11-19 07:10:38,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:10:38,572 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 185 [2022-11-19 07:10:38,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:38,640 INFO L225 Difference]: With dead ends: 24648 [2022-11-19 07:10:38,641 INFO L226 Difference]: Without dead ends: 13185 [2022-11-19 07:10:38,687 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:10:38,688 INFO L413 NwaCegarLoop]: 1852 mSDtfsCounter, 1664 mSDsluCounter, 5184 mSDsCounter, 0 mSdLazyCounter, 711 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1668 SdHoareTripleChecker+Valid, 7036 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 711 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:38,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1668 Valid, 7036 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 711 Invalid, 1 Unknown, 0 Unchecked, 7.0s Time] [2022-11-19 07:10:38,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13185 states. [2022-11-19 07:10:39,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13185 to 13102. [2022-11-19 07:10:39,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13102 states, 8365 states have (on average 1.3605499103407053) internal successors, (11381), 8763 states have internal predecessors, (11381), 3753 states have call successors, (3753), 984 states have call predecessors, (3753), 983 states have return successors, (3784), 3580 states have call predecessors, (3784), 3752 states have call successors, (3784) [2022-11-19 07:10:39,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13102 states to 13102 states and 18918 transitions. [2022-11-19 07:10:39,470 INFO L78 Accepts]: Start accepts. Automaton has 13102 states and 18918 transitions. Word has length 185 [2022-11-19 07:10:39,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:39,475 INFO L495 AbstractCegarLoop]: Abstraction has 13102 states and 18918 transitions. [2022-11-19 07:10:39,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (28), 3 states have call predecessors, (28), 2 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:10:39,475 INFO L276 IsEmpty]: Start isEmpty. Operand 13102 states and 18918 transitions. [2022-11-19 07:10:39,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-19 07:10:39,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:39,488 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:39,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:10:39,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:10:39,702 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:39,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:39,703 INFO L85 PathProgramCache]: Analyzing trace with hash -179855483, now seen corresponding path program 1 times [2022-11-19 07:10:39,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:39,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057788544] [2022-11-19 07:10:39,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:39,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:40,675 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:10:40,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:40,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057788544] [2022-11-19 07:10:40,677 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057788544] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:40,677 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:40,677 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:10:40,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675434826] [2022-11-19 07:10:40,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:40,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:40,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:40,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:40,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:40,680 INFO L87 Difference]: Start difference. First operand 13102 states and 18918 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:42,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:47,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:47,700 INFO L93 Difference]: Finished difference Result 23844 states and 34401 transitions. [2022-11-19 07:10:47,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:10:47,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 186 [2022-11-19 07:10:47,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:47,779 INFO L225 Difference]: With dead ends: 23844 [2022-11-19 07:10:47,780 INFO L226 Difference]: Without dead ends: 13198 [2022-11-19 07:10:47,821 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:47,822 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 1667 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:47,822 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 4542 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 536 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-11-19 07:10:47,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13198 states. [2022-11-19 07:10:48,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13198 to 13126. [2022-11-19 07:10:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13126 states, 8389 states have (on average 1.3595184169746095) internal successors, (11405), 8781 states have internal predecessors, (11405), 3747 states have call successors, (3747), 990 states have call predecessors, (3747), 989 states have return successors, (3778), 3580 states have call predecessors, (3778), 3746 states have call successors, (3778) [2022-11-19 07:10:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13126 states to 13126 states and 18930 transitions. [2022-11-19 07:10:48,875 INFO L78 Accepts]: Start accepts. Automaton has 13126 states and 18930 transitions. Word has length 186 [2022-11-19 07:10:48,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:48,876 INFO L495 AbstractCegarLoop]: Abstraction has 13126 states and 18930 transitions. [2022-11-19 07:10:48,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:48,876 INFO L276 IsEmpty]: Start isEmpty. Operand 13126 states and 18930 transitions. [2022-11-19 07:10:48,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-11-19 07:10:48,889 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:48,889 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:48,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:10:48,890 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:48,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:48,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1336524539, now seen corresponding path program 1 times [2022-11-19 07:10:48,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:48,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925989526] [2022-11-19 07:10:48,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:48,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:10:49,631 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:49,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925989526] [2022-11-19 07:10:49,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925989526] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:49,632 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:49,632 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:10:49,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380315720] [2022-11-19 07:10:49,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:49,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:49,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:49,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:49,634 INFO L87 Difference]: Start difference. First operand 13126 states and 18930 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:54,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:10:56,342 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:10:57,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:10:57,363 INFO L93 Difference]: Finished difference Result 23898 states and 34425 transitions. [2022-11-19 07:10:57,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:10:57,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 187 [2022-11-19 07:10:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:10:57,439 INFO L225 Difference]: With dead ends: 23898 [2022-11-19 07:10:57,439 INFO L226 Difference]: Without dead ends: 13222 [2022-11-19 07:10:57,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:10:57,479 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 1665 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1669 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:10:57,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1669 Valid, 4542 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 538 Invalid, 1 Unknown, 0 Unchecked, 7.1s Time] [2022-11-19 07:10:57,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13222 states. [2022-11-19 07:10:58,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13222 to 13150. [2022-11-19 07:10:58,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13150 states, 8413 states have (on average 1.3584928087483656) internal successors, (11429), 8799 states have internal predecessors, (11429), 3741 states have call successors, (3741), 996 states have call predecessors, (3741), 995 states have return successors, (3772), 3580 states have call predecessors, (3772), 3740 states have call successors, (3772) [2022-11-19 07:10:58,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13150 states to 13150 states and 18942 transitions. [2022-11-19 07:10:58,500 INFO L78 Accepts]: Start accepts. Automaton has 13150 states and 18942 transitions. Word has length 187 [2022-11-19 07:10:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:10:58,501 INFO L495 AbstractCegarLoop]: Abstraction has 13150 states and 18942 transitions. [2022-11-19 07:10:58,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:10:58,501 INFO L276 IsEmpty]: Start isEmpty. Operand 13150 states and 18942 transitions. [2022-11-19 07:10:58,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-19 07:10:58,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:10:58,516 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:10:58,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:10:58,517 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:10:58,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:10:58,517 INFO L85 PathProgramCache]: Analyzing trace with hash -660918456, now seen corresponding path program 1 times [2022-11-19 07:10:58,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:10:58,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818219758] [2022-11-19 07:10:58,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:10:58,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:10:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:10:59,229 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:10:59,229 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:10:59,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818219758] [2022-11-19 07:10:59,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818219758] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:10:59,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:10:59,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:10:59,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209273197] [2022-11-19 07:10:59,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:10:59,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:10:59,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:10:59,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:10:59,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:10:59,235 INFO L87 Difference]: Start difference. First operand 13150 states and 18942 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:11:00,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:11:05,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:05,327 INFO L93 Difference]: Finished difference Result 23568 states and 33889 transitions. [2022-11-19 07:11:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:11:05,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 188 [2022-11-19 07:11:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:05,400 INFO L225 Difference]: With dead ends: 23568 [2022-11-19 07:11:05,400 INFO L226 Difference]: Without dead ends: 12862 [2022-11-19 07:11:05,438 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:11:05,439 INFO L413 NwaCegarLoop]: 1519 mSDtfsCounter, 1663 mSDsluCounter, 3023 mSDsCounter, 0 mSdLazyCounter, 539 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 4542 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 539 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:05,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1667 Valid, 4542 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 539 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-11-19 07:11:05,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12862 states. [2022-11-19 07:11:06,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12862 to 12808. [2022-11-19 07:11:06,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12808 states, 8192 states have (on average 1.3575439453125) internal successors, (11121), 8560 states have internal predecessors, (11121), 3627 states have call successors, (3627), 989 states have call predecessors, (3627), 988 states have return successors, (3658), 3474 states have call predecessors, (3658), 3626 states have call successors, (3658) [2022-11-19 07:11:06,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12808 states to 12808 states and 18406 transitions. [2022-11-19 07:11:06,465 INFO L78 Accepts]: Start accepts. Automaton has 12808 states and 18406 transitions. Word has length 188 [2022-11-19 07:11:06,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:06,466 INFO L495 AbstractCegarLoop]: Abstraction has 12808 states and 18406 transitions. [2022-11-19 07:11:06,466 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (28), 3 states have call predecessors, (28), 1 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-19 07:11:06,467 INFO L276 IsEmpty]: Start isEmpty. Operand 12808 states and 18406 transitions. [2022-11-19 07:11:06,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2022-11-19 07:11:06,479 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:06,479 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:11:06,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:11:06,480 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:06,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:06,480 INFO L85 PathProgramCache]: Analyzing trace with hash -964127281, now seen corresponding path program 1 times [2022-11-19 07:11:06,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:06,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014995744] [2022-11-19 07:11:06,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:06,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:06,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:07,799 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2022-11-19 07:11:07,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:07,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014995744] [2022-11-19 07:11:07,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014995744] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:11:07,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742993094] [2022-11-19 07:11:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:07,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:11:07,801 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:11:07,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:11:07,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:11:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:09,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 5259 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:11:09,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:09,495 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:11:09,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:11:09,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742993094] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:09,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:11:09,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-19 07:11:09,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983722433] [2022-11-19 07:11:09,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:09,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:11:09,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:09,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:11:09,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:11:09,498 INFO L87 Difference]: Start difference. First operand 12808 states and 18406 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:11:12,363 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:11:14,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:11:16,051 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:11:21,620 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:11:28,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:11:29,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:29,616 INFO L93 Difference]: Finished difference Result 30190 states and 43384 transitions. [2022-11-19 07:11:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:11:29,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 196 [2022-11-19 07:11:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:29,704 INFO L225 Difference]: With dead ends: 30190 [2022-11-19 07:11:29,705 INFO L226 Difference]: Without dead ends: 21407 [2022-11-19 07:11:29,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2022-11-19 07:11:29,736 INFO L413 NwaCegarLoop]: 2465 mSDtfsCounter, 1709 mSDsluCounter, 11311 mSDsCounter, 0 mSdLazyCounter, 1558 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 13776 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1558 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:29,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 13776 Invalid, 1561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1558 Invalid, 1 Unknown, 0 Unchecked, 18.9s Time] [2022-11-19 07:11:29,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21407 states. [2022-11-19 07:11:31,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21407 to 21232. [2022-11-19 07:11:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21232 states, 13591 states have (on average 1.358472518578471) internal successors, (18463), 14215 states have internal predecessors, (18463), 5995 states have call successors, (5995), 1638 states have call predecessors, (5995), 1645 states have return successors, (6078), 5732 states have call predecessors, (6078), 5994 states have call successors, (6078) [2022-11-19 07:11:31,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21232 states to 21232 states and 30536 transitions. [2022-11-19 07:11:31,387 INFO L78 Accepts]: Start accepts. Automaton has 21232 states and 30536 transitions. Word has length 196 [2022-11-19 07:11:31,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:31,388 INFO L495 AbstractCegarLoop]: Abstraction has 21232 states and 30536 transitions. [2022-11-19 07:11:31,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:11:31,388 INFO L276 IsEmpty]: Start isEmpty. Operand 21232 states and 30536 transitions. [2022-11-19 07:11:31,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-11-19 07:11:31,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:31,408 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:11:31,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:11:31,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:11:31,625 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:31,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:31,626 INFO L85 PathProgramCache]: Analyzing trace with hash -1980764535, now seen corresponding path program 1 times [2022-11-19 07:11:31,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:31,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544613336] [2022-11-19 07:11:31,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:31,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:31,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:32,957 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:11:32,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:32,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544613336] [2022-11-19 07:11:32,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544613336] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:11:32,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615394865] [2022-11-19 07:11:32,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:32,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:11:32,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:11:32,960 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:11:32,985 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:11:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:34,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 5261 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:11:34,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:11:34,750 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:11:34,750 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:11:34,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [615394865] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:11:34,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:11:34,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-19 07:11:34,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083854700] [2022-11-19 07:11:34,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:11:34,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:11:34,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:11:34,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:11:34,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:11:34,754 INFO L87 Difference]: Start difference. First operand 21232 states and 30536 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:11:37,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:11:39,278 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:11:52,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:11:54,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:11:55,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:11:55,620 INFO L93 Difference]: Finished difference Result 47082 states and 67684 transitions. [2022-11-19 07:11:55,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:11:55,621 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 197 [2022-11-19 07:11:55,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:11:55,736 INFO L225 Difference]: With dead ends: 47082 [2022-11-19 07:11:55,736 INFO L226 Difference]: Without dead ends: 29875 [2022-11-19 07:11:55,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:11:55,787 INFO L413 NwaCegarLoop]: 2605 mSDtfsCounter, 1709 mSDsluCounter, 11871 mSDsCounter, 0 mSdLazyCounter, 1624 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 14476 SdHoareTripleChecker+Invalid, 1628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1624 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:11:55,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 14476 Invalid, 1628 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1624 Invalid, 2 Unknown, 0 Unchecked, 19.1s Time] [2022-11-19 07:11:55,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29875 states. [2022-11-19 07:11:57,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29875 to 29676. [2022-11-19 07:11:57,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29676 states, 19002 states have (on average 1.3586464582675508) internal successors, (25817), 19894 states have internal predecessors, (25817), 8363 states have call successors, (8363), 2287 states have call predecessors, (8363), 2310 states have return successors, (8510), 7986 states have call predecessors, (8510), 8362 states have call successors, (8510) [2022-11-19 07:11:57,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29676 states to 29676 states and 42690 transitions. [2022-11-19 07:11:57,515 INFO L78 Accepts]: Start accepts. Automaton has 29676 states and 42690 transitions. Word has length 197 [2022-11-19 07:11:57,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:11:57,515 INFO L495 AbstractCegarLoop]: Abstraction has 29676 states and 42690 transitions. [2022-11-19 07:11:57,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:11:57,516 INFO L276 IsEmpty]: Start isEmpty. Operand 29676 states and 42690 transitions. [2022-11-19 07:11:57,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2022-11-19 07:11:57,538 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:11:57,538 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:11:57,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:11:57,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:11:57,756 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:11:57,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:11:57,757 INFO L85 PathProgramCache]: Analyzing trace with hash 19937384, now seen corresponding path program 1 times [2022-11-19 07:11:57,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:11:57,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421742985] [2022-11-19 07:11:57,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:57,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:11:57,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:11:58,833 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:11:58,833 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:11:58,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421742985] [2022-11-19 07:11:58,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421742985] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:11:58,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425536793] [2022-11-19 07:11:58,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:11:58,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:11:58,834 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:11:58,836 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:11:58,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:12:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:00,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 5263 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:12:00,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:01,013 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:12:01,013 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:01,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425536793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:01,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:01,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2022-11-19 07:12:01,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831418887] [2022-11-19 07:12:01,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:01,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:12:01,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:01,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:12:01,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:12:01,017 INFO L87 Difference]: Start difference. First operand 29676 states and 42690 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:12:03,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:05,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:10,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:15,250 INFO L93 Difference]: Finished difference Result 63962 states and 91976 transitions. [2022-11-19 07:12:15,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:12:15,251 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 198 [2022-11-19 07:12:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:15,424 INFO L225 Difference]: With dead ends: 63962 [2022-11-19 07:12:15,424 INFO L226 Difference]: Without dead ends: 38311 [2022-11-19 07:12:15,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-11-19 07:12:15,493 INFO L413 NwaCegarLoop]: 2004 mSDtfsCounter, 1709 mSDsluCounter, 9467 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 11471 SdHoareTripleChecker+Invalid, 1173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:15,494 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 11471 Invalid, 1173 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 1169 Invalid, 2 Unknown, 0 Unchecked, 12.4s Time] [2022-11-19 07:12:15,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38311 states. [2022-11-19 07:12:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38311 to 29680. [2022-11-19 07:12:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29680 states, 19006 states have (on average 1.3585709775860255) internal successors, (25821), 19894 states have internal predecessors, (25821), 8363 states have call successors, (8363), 2287 states have call predecessors, (8363), 2310 states have return successors, (8510), 7990 states have call predecessors, (8510), 8362 states have call successors, (8510) [2022-11-19 07:12:17,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29680 states to 29680 states and 42694 transitions. [2022-11-19 07:12:17,502 INFO L78 Accepts]: Start accepts. Automaton has 29680 states and 42694 transitions. Word has length 198 [2022-11-19 07:12:17,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:17,503 INFO L495 AbstractCegarLoop]: Abstraction has 29680 states and 42694 transitions. [2022-11-19 07:12:17,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:12:17,503 INFO L276 IsEmpty]: Start isEmpty. Operand 29680 states and 42694 transitions. [2022-11-19 07:12:17,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-11-19 07:12:17,526 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:17,527 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 7, 7, 7, 7, 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] [2022-11-19 07:12:17,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:17,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:17,746 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:17,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:17,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1987898118, now seen corresponding path program 1 times [2022-11-19 07:12:17,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:17,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686661091] [2022-11-19 07:12:17,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:17,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:17,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:18,199 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 602 trivial. 0 not checked. [2022-11-19 07:12:18,200 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:18,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686661091] [2022-11-19 07:12:18,200 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686661091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:18,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:18,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:18,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77108113] [2022-11-19 07:12:18,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:18,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:18,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:18,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:18,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:18,203 INFO L87 Difference]: Start difference. First operand 29680 states and 42694 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:12:20,216 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:22,431 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:24,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:24,333 INFO L93 Difference]: Finished difference Result 30922 states and 43907 transitions. [2022-11-19 07:12:24,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:24,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 215 [2022-11-19 07:12:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:24,457 INFO L225 Difference]: With dead ends: 30922 [2022-11-19 07:12:24,457 INFO L226 Difference]: Without dead ends: 30919 [2022-11-19 07:12:24,472 INFO L412 NwaCegarLoop]: 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 [2022-11-19 07:12:24,473 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 699 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 2420 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:24,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 2420 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-19 07:12:24,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30919 states. [2022-11-19 07:12:25,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30919 to 30919. [2022-11-19 07:12:25,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30919 states, 19654 states have (on average 1.3496489264271905) internal successors, (26526), 20542 states have internal predecessors, (26526), 8609 states have call successors, (8609), 2632 states have call predecessors, (8609), 2655 states have return successors, (8756), 8236 states have call predecessors, (8756), 8608 states have call successors, (8756) [2022-11-19 07:12:25,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30919 states to 30919 states and 43891 transitions. [2022-11-19 07:12:25,985 INFO L78 Accepts]: Start accepts. Automaton has 30919 states and 43891 transitions. Word has length 215 [2022-11-19 07:12:25,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:25,985 INFO L495 AbstractCegarLoop]: Abstraction has 30919 states and 43891 transitions. [2022-11-19 07:12:25,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:12:25,986 INFO L276 IsEmpty]: Start isEmpty. Operand 30919 states and 43891 transitions. [2022-11-19 07:12:26,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-19 07:12:26,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:26,007 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-11-19 07:12:26,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:12:26,008 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:26,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:26,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1068873154, now seen corresponding path program 1 times [2022-11-19 07:12:26,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:26,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035679250] [2022-11-19 07:12:26,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:26,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:26,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2022-11-19 07:12:27,019 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:27,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035679250] [2022-11-19 07:12:27,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035679250] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:27,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [128599790] [2022-11-19 07:12:27,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:27,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:27,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:27,022 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:27,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:12:28,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:28,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 5265 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-19 07:12:28,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:28,594 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:12:28,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:28,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [128599790] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:28,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:28,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-19 07:12:28,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310794366] [2022-11-19 07:12:28,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:28,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:12:28,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:28,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:12:28,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:12:28,597 INFO L87 Difference]: Start difference. First operand 30919 states and 43891 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:12:31,027 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.76s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:33,041 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:35,052 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:39,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.78s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 07:12:41,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 07:12:46,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:46,468 INFO L93 Difference]: Finished difference Result 66637 states and 94561 transitions. [2022-11-19 07:12:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:12:46,468 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 199 [2022-11-19 07:12:46,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:46,649 INFO L225 Difference]: With dead ends: 66637 [2022-11-19 07:12:46,649 INFO L226 Difference]: Without dead ends: 39918 [2022-11-19 07:12:46,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-11-19 07:12:46,733 INFO L413 NwaCegarLoop]: 2004 mSDtfsCounter, 1709 mSDsluCounter, 9467 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 11471 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:46,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 11471 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1168 Invalid, 2 Unknown, 0 Unchecked, 15.5s Time] [2022-11-19 07:12:46,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39918 states. [2022-11-19 07:12:48,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39918 to 30939. [2022-11-19 07:12:48,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30939 states, 19670 states have (on average 1.3493645144890696) internal successors, (26542), 20554 states have internal predecessors, (26542), 8609 states have call successors, (8609), 2632 states have call predecessors, (8609), 2659 states have return successors, (8760), 8244 states have call predecessors, (8760), 8608 states have call successors, (8760) [2022-11-19 07:12:48,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30939 states to 30939 states and 43911 transitions. [2022-11-19 07:12:48,536 INFO L78 Accepts]: Start accepts. Automaton has 30939 states and 43911 transitions. Word has length 199 [2022-11-19 07:12:48,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:48,537 INFO L495 AbstractCegarLoop]: Abstraction has 30939 states and 43911 transitions. [2022-11-19 07:12:48,537 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:12:48,538 INFO L276 IsEmpty]: Start isEmpty. Operand 30939 states and 43911 transitions. [2022-11-19 07:12:48,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-11-19 07:12:48,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:48,558 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:48,585 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:48,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-19 07:12:48,774 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:48,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:48,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1437907325, now seen corresponding path program 1 times [2022-11-19 07:12:48,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:48,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79812036] [2022-11-19 07:12:48,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:48,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:48,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 215 trivial. 0 not checked. [2022-11-19 07:12:49,791 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:49,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79812036] [2022-11-19 07:12:49,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79812036] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:49,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [613529121] [2022-11-19 07:12:49,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:49,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:49,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:49,793 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:49,812 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7e5a6daf-0260-4c74-a96d-a4e086bf9b15/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:12:51,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:51,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 5271 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:12:51,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:51,699 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:12:51,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:12:52,337 INFO L134 CoverageAnalysis]: Checked inductivity of 222 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-11-19 07:12:52,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [613529121] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:12:52,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [251505163] [2022-11-19 07:12:52,370 INFO L159 IcfgInterpreter]: Started Sifa with 117 locations of interest [2022-11-19 07:12:52,370 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:12:52,375 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:12:52,381 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:12:52,382 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:13:06,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-11-19 07:13:06,770 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-19 07:13:07,066 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-19 07:13:09,815 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:09,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:09,821 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:09,824 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:09,827 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:09,841 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:09,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:13:13,090 INFO L217 Elim1Store]: Index analysis took 4206 ms [2022-11-19 07:20:40,237 WARN L233 SmtUtils]: Spent 7.45m on a formula simplification. DAG size of input: 6140 DAG size of output: 2582 (called from [L 318] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-19 07:20:40,256 INFO L321 Elim1Store]: treesize reduction 29209, result has 16.5 percent of original size [2022-11-19 07:20:40,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 217 select indices, 217 select index equivalence classes, 23450 disjoint index pairs (out of 23436 index pairs), introduced 217 new quantified variables, introduced 222 case distinctions, treesize of input 1110 treesize of output 6427 [2022-11-19 07:20:54,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2022-11-19 07:21:02,015 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:13,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:13,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:13,151 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:13,166 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:13,182 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:13,198 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-19 07:21:39,129 INFO L217 Elim1Store]: Index analysis took 40292 ms