./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI --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 cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 --- 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-5e519f3 [2022-11-03 02:06:04,627 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:06:04,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:06:04,671 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:06:04,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:06:04,678 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:06:04,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:06:04,685 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:06:04,688 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:06:04,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:06:04,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:06:04,697 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:06:04,697 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:06:04,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:06:04,703 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:06:04,705 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:06:04,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:06:04,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:06:04,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:06:04,720 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:06:04,724 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:06:04,726 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:06:04,727 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:06:04,729 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:06:04,736 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:06:04,740 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:06:04,740 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:06:04,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:06:04,743 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:06:04,744 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:06:04,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:06:04,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:06:04,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:06:04,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:06:04,751 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:06:04,752 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:06:04,752 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:06:04,753 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:06:04,753 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:06:04,754 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:06:04,755 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:06:04,756 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:06:04,802 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:06:04,802 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:06:04,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:06:04,803 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:06:04,804 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:06:04,804 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:06:04,804 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:06:04,805 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:06:04,805 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:06:04,805 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:06:04,806 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:06:04,806 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:06:04,807 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:06:04,807 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:06:04,807 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:06:04,807 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:06:04,807 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:06:04,808 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:06:04,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:06:04,809 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:06:04,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:06:04,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:06:04,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:06:04,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:06:04,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:06:04,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:06:04,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:06:04,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:06:04,810 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:06:04,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:04,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:06:04,811 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:06:04,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:06:04,812 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:06:04,812 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:06:04,812 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:06:04,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:06:04,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:06:04,813 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_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cd4602f1a95f60cf2d782cdd09ffbf4f13da5d7831c02d1076d087dbb1c87f94 [2022-11-03 02:06:05,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:06:05,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:06:05,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:06:05,135 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:06:05,136 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:06:05,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2022-11-03 02:06:05,213 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/data/cea6c1194/563a1a96ad424ba9a936f9afd38f8753/FLAG162de1719 [2022-11-03 02:06:06,149 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:06:06,150 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2022-11-03 02:06:06,210 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/data/cea6c1194/563a1a96ad424ba9a936f9afd38f8753/FLAG162de1719 [2022-11-03 02:06:06,607 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/data/cea6c1194/563a1a96ad424ba9a936f9afd38f8753 [2022-11-03 02:06:06,610 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:06:06,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:06:06,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:06,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:06:06,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:06:06,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:06" (1/1) ... [2022-11-03 02:06:06,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f31323 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:06, skipping insertion in model container [2022-11-03 02:06:06,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:06:06" (1/1) ... [2022-11-03 02:06:06,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:06:06,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:06:09,129 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2022-11-03 02:06:09,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:09,256 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:06:09,776 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i[260495,260508] [2022-11-03 02:06:09,791 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:06:09,935 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:06:09,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09 WrapperNode [2022-11-03 02:06:09,936 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:06:09,937 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:09,937 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:06:09,937 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:06:09,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,345 INFO L138 Inliner]: procedures = 251, calls = 2680, calls flagged for inlining = 117, calls inlined = 112, statements flattened = 6571 [2022-11-03 02:06:10,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:06:10,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:06:10,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:06:10,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:06:10,356 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,430 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,787 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:06:10,859 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:06:10,859 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:06:10,859 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:06:10,860 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (1/1) ... [2022-11-03 02:06:10,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:06:10,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:06:10,893 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:06:10,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:06:10,942 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_origin [2022-11-03 02:06:10,943 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_origin [2022-11-03 02:06:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure con_copy_unimap [2022-11-03 02:06:10,943 INFO L138 BoogieDeclarations]: Found implementation of procedure con_copy_unimap [2022-11-03 02:06:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_exit [2022-11-03 02:06:10,943 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_exit [2022-11-03 02:06:10,943 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_try_module_get [2022-11-03 02:06:10,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_try_module_get [2022-11-03 02:06:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure con_is_bound [2022-11-03 02:06:10,944 INFO L138 BoogieDeclarations]: Found implementation of procedure con_is_bound [2022-11-03 02:06:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove [2022-11-03 02:06:10,944 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove [2022-11-03 02:06:10,944 INFO L130 BoogieDeclarations]: Found specification of procedure var_to_display [2022-11-03 02:06:10,945 INFO L138 BoogieDeclarations]: Found implementation of procedure var_to_display [2022-11-03 02:06:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure do_fbcon_takeover [2022-11-03 02:06:10,945 INFO L138 BoogieDeclarations]: Found implementation of procedure do_fbcon_takeover [2022-11-03 02:06:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:06:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:06:10,945 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-03 02:06:10,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-03 02:06:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-03 02:06:10,946 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-03 02:06:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:06:10,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:06:10,946 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_release_oldinfo [2022-11-03 02:06:10,947 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_release_oldinfo [2022-11-03 02:06:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memcpyw [2022-11-03 02:06:10,947 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memcpyw [2022-11-03 02:06:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 02:06:10,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 02:06:10,947 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_cursor [2022-11-03 02:06:10,947 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_cursor [2022-11-03 02:06:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure get_default_font [2022-11-03 02:06:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure get_default_font [2022-11-03 02:06:10,948 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2022-11-03 02:06:10,948 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2022-11-03 02:06:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_putcs [2022-11-03 02:06:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_putcs [2022-11-03 02:06:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure get_color [2022-11-03 02:06:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure get_color [2022-11-03 02:06:10,949 INFO L130 BoogieDeclarations]: Found specification of procedure scr_memsetw [2022-11-03 02:06:10,949 INFO L138 BoogieDeclarations]: Found implementation of procedure scr_memsetw [2022-11-03 02:06:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure do_unregister_con_driver [2022-11-03 02:06:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure do_unregister_con_driver [2022-11-03 02:06:10,950 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-03 02:06:10,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-03 02:06:10,951 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_get_font [2022-11-03 02:06:10,951 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_get_font [2022-11-03 02:06:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure real_y [2022-11-03 02:06:10,952 INFO L138 BoogieDeclarations]: Found implementation of procedure real_y [2022-11-03 02:06:10,952 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_update_softback [2022-11-03 02:06:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_update_softback [2022-11-03 02:06:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:06:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:06:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 02:06:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 02:06:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure update_region [2022-11-03 02:06:10,953 INFO L138 BoogieDeclarations]: Found implementation of procedure update_region [2022-11-03 02:06:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure fb_flashcursor [2022-11-03 02:06:10,954 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_flashcursor [2022-11-03 02:06:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure find_font [2022-11-03 02:06:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure find_font [2022-11-03 02:06:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:06:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_scrolldelta [2022-11-03 02:06:10,955 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_scrolldelta [2022-11-03 02:06:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-03 02:06:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_disp [2022-11-03 02:06:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_disp [2022-11-03 02:06:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:06:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear_margins [2022-11-03 02:06:10,956 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear_margins [2022-11-03 02:06:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-03 02:06:10,957 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-03 02:06:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure display_to_var [2022-11-03 02:06:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure display_to_var [2022-11-03 02:06:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:06:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:06:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2022-11-03 02:06:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~X~int~X~int~TO~VOID [2022-11-03 02:06:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:06:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:06:10,959 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2022-11-03 02:06:10,959 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2022-11-03 02:06:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:06:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:06:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_enter [2022-11-03 02:06:10,960 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_enter [2022-11-03 02:06:10,960 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_del_cursor_timer [2022-11-03 02:06:10,961 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_del_cursor_timer [2022-11-03 02:06:10,961 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_move [2022-11-03 02:06:10,962 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_move [2022-11-03 02:06:10,962 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:06:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 02:06:10,963 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 02:06:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:06:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_is_inactive [2022-11-03 02:06:10,963 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_is_inactive [2022-11-03 02:06:10,963 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_clear [2022-11-03 02:06:10,963 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_clear [2022-11-03 02:06:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_add_cursor_timer [2022-11-03 02:06:10,964 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_add_cursor_timer [2022-11-03 02:06:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:06:10,964 INFO L130 BoogieDeclarations]: Found specification of procedure fb_set_var [2022-11-03 02:06:10,965 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_set_var [2022-11-03 02:06:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:06:10,965 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:06:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure set_blitting_type [2022-11-03 02:06:10,965 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blitting_type [2022-11-03 02:06:10,965 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_bmove_rec [2022-11-03 02:06:10,966 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_bmove_rec [2022-11-03 02:06:10,967 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:06:10,969 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:06:10,969 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_palette [2022-11-03 02:06:10,970 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_palette [2022-11-03 02:06:10,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:06:10,971 INFO L130 BoogieDeclarations]: Found specification of procedure set_con2fb_map [2022-11-03 02:06:10,971 INFO L138 BoogieDeclarations]: Found implementation of procedure set_con2fb_map [2022-11-03 02:06:10,972 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_debug_leave [2022-11-03 02:06:10,973 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_debug_leave [2022-11-03 02:06:10,973 INFO L130 BoogieDeclarations]: Found specification of procedure console_conditional_schedule [2022-11-03 02:06:10,979 INFO L138 BoogieDeclarations]: Found implementation of procedure console_conditional_schedule [2022-11-03 02:06:10,979 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_copy_font [2022-11-03 02:06:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_copy_font [2022-11-03 02:06:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_do_set_font [2022-11-03 02:06:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_do_set_font [2022-11-03 02:06:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-03 02:06:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-03 02:06:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:06:10,980 INFO L130 BoogieDeclarations]: Found specification of procedure con2fb_acquire_newinfo [2022-11-03 02:06:10,980 INFO L138 BoogieDeclarations]: Found implementation of procedure con2fb_acquire_newinfo [2022-11-03 02:06:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-03 02:06:10,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-03 02:06:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure fb_get_color_depth [2022-11-03 02:06:10,981 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_get_color_depth [2022-11-03 02:06:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:06:10,981 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_prepare_logo [2022-11-03 02:06:10,981 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_prepare_logo [2022-11-03 02:06:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:06:10,982 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw_blit [2022-11-03 02:06:11,036 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw_blit [2022-11-03 02:06:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_2 [2022-11-03 02:06:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_2 [2022-11-03 02:06:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure fb_videomode_to_var [2022-11-03 02:06:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure fb_videomode_to_var [2022-11-03 02:06:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2022-11-03 02:06:11,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~X~int~X~int~X~int~TO~VOID [2022-11-03 02:06:11,037 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:06:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-03 02:06:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure console_lock [2022-11-03 02:06:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure console_lock [2022-11-03 02:06:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_modechanged [2022-11-03 02:06:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_modechanged [2022-11-03 02:06:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure console_unlock [2022-11-03 02:06:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure console_unlock [2022-11-03 02:06:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_invert_region [2022-11-03 02:06:11,038 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_invert_region [2022-11-03 02:06:11,038 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_set_all_vcs [2022-11-03 02:06:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_set_all_vcs [2022-11-03 02:06:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_redraw [2022-11-03 02:06:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_redraw [2022-11-03 02:06:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure updatescrollmode [2022-11-03 02:06:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure updatescrollmode [2022-11-03 02:06:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure fbcon_switch [2022-11-03 02:06:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fbcon_switch [2022-11-03 02:06:11,039 INFO L130 BoogieDeclarations]: Found specification of procedure vc_resize [2022-11-03 02:06:11,039 INFO L138 BoogieDeclarations]: Found implementation of procedure vc_resize [2022-11-03 02:06:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:06:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-03 02:06:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure redraw_screen [2022-11-03 02:06:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure redraw_screen [2022-11-03 02:06:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:06:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure search_fb_in_map [2022-11-03 02:06:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure search_fb_in_map [2022-11-03 02:06:11,040 INFO L130 BoogieDeclarations]: Found specification of procedure con_set_default_unimap [2022-11-03 02:06:11,040 INFO L138 BoogieDeclarations]: Found implementation of procedure con_set_default_unimap [2022-11-03 02:06:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure device_remove_file [2022-11-03 02:06:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure device_remove_file [2022-11-03 02:06:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:06:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:06:11,041 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:06:11,041 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:06:12,127 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:06:12,131 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:06:15,042 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-03 02:06:46,247 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:06:52,698 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:06:52,698 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-03 02:06:52,704 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:52 BoogieIcfgContainer [2022-11-03 02:06:52,704 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:06:52,707 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:06:52,707 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:06:52,711 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:06:52,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:06:06" (1/3) ... [2022-11-03 02:06:52,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11697a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:52, skipping insertion in model container [2022-11-03 02:06:52,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:06:09" (2/3) ... [2022-11-03 02:06:52,712 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11697a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:06:52, skipping insertion in model container [2022-11-03 02:06:52,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:06:52" (3/3) ... [2022-11-03 02:06:52,714 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-08_1a-drivers--video--console--fbcon.ko-entry_point.cil.out.i [2022-11-03 02:06:52,736 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:06:52,736 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:06:52,829 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:06:52,837 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;@663adf28, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:06:52,837 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:06:52,848 INFO L276 IsEmpty]: Start isEmpty. Operand has 1457 states, 979 states have (on average 1.4208375893769152) internal successors, (1391), 1030 states have internal predecessors, (1391), 395 states have call successors, (395), 82 states have call predecessors, (395), 81 states have return successors, (390), 378 states have call predecessors, (390), 390 states have call successors, (390) [2022-11-03 02:06:52,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2022-11-03 02:06:52,898 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:06:52,899 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:06:52,899 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:06:52,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:06:52,905 INFO L85 PathProgramCache]: Analyzing trace with hash 1138016632, now seen corresponding path program 1 times [2022-11-03 02:06:52,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:06:52,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860286968] [2022-11-03 02:06:52,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:06:52,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:06:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:06:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-03 02:06:54,868 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:06:54,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860286968] [2022-11-03 02:06:54,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860286968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:06:54,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:06:54,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:06:54,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320362421] [2022-11-03 02:06:54,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:06:54,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:06:54,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:06:54,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:06:54,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:06:54,930 INFO L87 Difference]: Start difference. First operand has 1457 states, 979 states have (on average 1.4208375893769152) internal successors, (1391), 1030 states have internal predecessors, (1391), 395 states have call successors, (395), 82 states have call predecessors, (395), 81 states have return successors, (390), 378 states have call predecessors, (390), 390 states have call successors, (390) Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:06:56,991 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:06:59,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:00,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:03,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:06,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:12,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:15,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:15,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:15,681 INFO L93 Difference]: Finished difference Result 4065 states and 6106 transitions. [2022-11-03 02:07:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:15,685 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 433 [2022-11-03 02:07:15,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:15,733 INFO L225 Difference]: With dead ends: 4065 [2022-11-03 02:07:15,733 INFO L226 Difference]: Without dead ends: 2683 [2022-11-03 02:07:15,748 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 [2022-11-03 02:07:15,758 INFO L413 NwaCegarLoop]: 2261 mSDtfsCounter, 1870 mSDsluCounter, 2115 mSDsCounter, 0 mSdLazyCounter, 461 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 4157 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 461 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:15,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 4157 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 461 Invalid, 6 Unknown, 0 Unchecked, 20.3s Time] [2022-11-03 02:07:15,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2683 states. [2022-11-03 02:07:16,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2683 to 2678. [2022-11-03 02:07:16,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 1831 states have (on average 1.4249044238121245) internal successors, (2609), 1912 states have internal predecessors, (2609), 691 states have call successors, (691), 158 states have call predecessors, (691), 155 states have return successors, (694), 664 states have call predecessors, (694), 689 states have call successors, (694) [2022-11-03 02:07:16,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 3994 transitions. [2022-11-03 02:07:16,082 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 3994 transitions. Word has length 433 [2022-11-03 02:07:16,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:16,090 INFO L495 AbstractCegarLoop]: Abstraction has 2678 states and 3994 transitions. [2022-11-03 02:07:16,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:07:16,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 3994 transitions. [2022-11-03 02:07:16,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2022-11-03 02:07:16,114 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:16,114 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:16,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:07:16,115 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:16,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:16,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1185889474, now seen corresponding path program 1 times [2022-11-03 02:07:16,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:16,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310340340] [2022-11-03 02:07:16,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:16,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:17,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-03 02:07:17,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:17,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310340340] [2022-11-03 02:07:17,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310340340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:17,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:07:17,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:07:17,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716486618] [2022-11-03 02:07:17,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:17,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:17,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:17,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:17,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:07:17,287 INFO L87 Difference]: Start difference. First operand 2678 states and 3994 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:07:19,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:21,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:22,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:24,456 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.59s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:27,669 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:31,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:33,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:34,249 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:34,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:34,582 INFO L93 Difference]: Finished difference Result 5268 states and 7859 transitions. [2022-11-03 02:07:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:34,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) Word has length 438 [2022-11-03 02:07:34,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:34,605 INFO L225 Difference]: With dead ends: 5268 [2022-11-03 02:07:34,605 INFO L226 Difference]: Without dead ends: 2679 [2022-11-03 02:07:34,620 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 [2022-11-03 02:07:34,621 INFO L413 NwaCegarLoop]: 1928 mSDtfsCounter, 0 mSDsluCounter, 2152 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 0 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 3853 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:34,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 3853 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 458 Invalid, 4 Unknown, 0 Unchecked, 17.1s Time] [2022-11-03 02:07:34,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2679 states. [2022-11-03 02:07:34,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2679 to 2679. [2022-11-03 02:07:34,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2679 states, 1832 states have (on average 1.4246724890829694) internal successors, (2610), 1913 states have internal predecessors, (2610), 691 states have call successors, (691), 158 states have call predecessors, (691), 155 states have return successors, (694), 664 states have call predecessors, (694), 689 states have call successors, (694) [2022-11-03 02:07:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2679 states to 2679 states and 3995 transitions. [2022-11-03 02:07:34,755 INFO L78 Accepts]: Start accepts. Automaton has 2679 states and 3995 transitions. Word has length 438 [2022-11-03 02:07:34,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:34,756 INFO L495 AbstractCegarLoop]: Abstraction has 2679 states and 3995 transitions. [2022-11-03 02:07:34,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 2 states have call predecessors, (49), 2 states have call successors, (49) [2022-11-03 02:07:34,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2679 states and 3995 transitions. [2022-11-03 02:07:34,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2022-11-03 02:07:34,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:34,774 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:34,774 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:07:34,774 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:34,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:34,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1488225942, now seen corresponding path program 1 times [2022-11-03 02:07:34,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:34,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4481734] [2022-11-03 02:07:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:34,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-03 02:07:36,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:07:36,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4481734] [2022-11-03 02:07:36,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4481734] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:07:36,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760412512] [2022-11-03 02:07:36,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:36,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:36,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:36,293 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:36,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:07:39,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:07:39,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 4801 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:07:39,135 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:07:40,874 INFO L134 CoverageAnalysis]: Checked inductivity of 4208 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4208 trivial. 0 not checked. [2022-11-03 02:07:40,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:07:40,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760412512] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:07:40,875 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:07:40,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2022-11-03 02:07:40,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378211581] [2022-11-03 02:07:40,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:07:40,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:07:40,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:07:40,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:07:40,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:40,879 INFO L87 Difference]: Start difference. First operand 2679 states and 3995 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-03 02:07:42,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:44,355 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:47,745 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:51,525 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:07:53,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:55,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:07:57,232 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 [] [2022-11-03 02:07:57,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:07:57,497 INFO L93 Difference]: Finished difference Result 7680 states and 11482 transitions. [2022-11-03 02:07:57,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:07:57,498 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) Word has length 439 [2022-11-03 02:07:57,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:07:57,540 INFO L225 Difference]: With dead ends: 7680 [2022-11-03 02:07:57,540 INFO L226 Difference]: Without dead ends: 5084 [2022-11-03 02:07:57,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 439 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:07:57,558 INFO L413 NwaCegarLoop]: 2355 mSDtfsCounter, 1794 mSDsluCounter, 2029 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:07:57,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1798 Valid, 4160 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 477 Invalid, 4 Unknown, 0 Unchecked, 16.4s Time] [2022-11-03 02:07:57,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2022-11-03 02:07:57,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 5066. [2022-11-03 02:07:57,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5066 states, 3492 states have (on average 1.43184421534937) internal successors, (5000), 3649 states have internal predecessors, (5000), 1272 states have call successors, (1272), 308 states have call predecessors, (1272), 301 states have return successors, (1287), 1218 states have call predecessors, (1287), 1269 states have call successors, (1287) [2022-11-03 02:07:58,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5066 states to 5066 states and 7559 transitions. [2022-11-03 02:07:58,023 INFO L78 Accepts]: Start accepts. Automaton has 5066 states and 7559 transitions. Word has length 439 [2022-11-03 02:07:58,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:07:58,026 INFO L495 AbstractCegarLoop]: Abstraction has 5066 states and 7559 transitions. [2022-11-03 02:07:58,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 2 states have internal predecessors, (79), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (49), 1 states have call predecessors, (49), 1 states have call successors, (49) [2022-11-03 02:07:58,026 INFO L276 IsEmpty]: Start isEmpty. Operand 5066 states and 7559 transitions. [2022-11-03 02:07:58,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-03 02:07:58,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:07:58,047 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:07:58,110 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:07:58,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:58,261 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:07:58,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:07:58,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1098604014, now seen corresponding path program 1 times [2022-11-03 02:07:58,262 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:07:58,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653301578] [2022-11-03 02:07:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:58,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:07:58,679 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-03 02:07:58,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487515922] [2022-11-03 02:07:58,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:07:58,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:07:58,680 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:07:58,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:07:58,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:08:01,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:01,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 5595 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:08:01,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:08:01,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4209 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4209 trivial. 0 not checked. [2022-11-03 02:08:01,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:08:01,790 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:01,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653301578] [2022-11-03 02:08:01,790 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-03 02:08:01,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487515922] [2022-11-03 02:08:01,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487515922] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:01,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:01,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:08:01,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691744589] [2022-11-03 02:08:01,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:01,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:08:01,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:01,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:08:01,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:08:01,794 INFO L87 Difference]: Start difference. First operand 5066 states and 7559 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-03 02:08:03,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:05,571 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:06,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:09,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:12,320 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:15,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:18,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:20,377 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.50s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:22,350 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:22,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:22,530 INFO L93 Difference]: Finished difference Result 8215 states and 12142 transitions. [2022-11-03 02:08:22,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:08:22,531 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) Word has length 446 [2022-11-03 02:08:22,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:22,592 INFO L225 Difference]: With dead ends: 8215 [2022-11-03 02:08:22,593 INFO L226 Difference]: Without dead ends: 7514 [2022-11-03 02:08:22,604 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 444 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:08:22,605 INFO L413 NwaCegarLoop]: 2247 mSDtfsCounter, 2045 mSDsluCounter, 1975 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 3 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:22,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 4004 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 458 Invalid, 5 Unknown, 0 Unchecked, 20.5s Time] [2022-11-03 02:08:22,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7514 states. [2022-11-03 02:08:23,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7514 to 7508. [2022-11-03 02:08:23,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7508 states, 5186 states have (on average 1.4344388738912457) internal successors, (7439), 5418 states have internal predecessors, (7439), 1875 states have call successors, (1875), 457 states have call predecessors, (1875), 446 states have return successors, (1894), 1795 states have call predecessors, (1894), 1872 states have call successors, (1894) [2022-11-03 02:08:23,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7508 states to 7508 states and 11208 transitions. [2022-11-03 02:08:23,219 INFO L78 Accepts]: Start accepts. Automaton has 7508 states and 11208 transitions. Word has length 446 [2022-11-03 02:08:23,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:23,221 INFO L495 AbstractCegarLoop]: Abstraction has 7508 states and 11208 transitions. [2022-11-03 02:08:23,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 3 states have call successors, (51), 3 states have call predecessors, (51), 3 states have return successors, (50), 3 states have call predecessors, (50), 3 states have call successors, (50) [2022-11-03 02:08:23,222 INFO L276 IsEmpty]: Start isEmpty. Operand 7508 states and 11208 transitions. [2022-11-03 02:08:23,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 447 [2022-11-03 02:08:23,235 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:23,236 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:23,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:08:23,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:08:23,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:23,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:23,461 INFO L85 PathProgramCache]: Analyzing trace with hash -638691073, now seen corresponding path program 1 times [2022-11-03 02:08:23,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:23,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667395873] [2022-11-03 02:08:23,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:23,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:23,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:24,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-03 02:08:24,277 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:24,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667395873] [2022-11-03 02:08:24,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667395873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:24,277 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:24,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:08:24,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438890038] [2022-11-03 02:08:24,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:24,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:08:24,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:24,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:08:24,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:08:24,280 INFO L87 Difference]: Start difference. First operand 7508 states and 11208 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 02:08:25,317 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:27,721 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:31,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:32,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:34,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:37,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:40,458 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:40,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:08:40,591 INFO L93 Difference]: Finished difference Result 18705 states and 27678 transitions. [2022-11-03 02:08:40,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:08:40,591 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) Word has length 446 [2022-11-03 02:08:40,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:08:40,663 INFO L225 Difference]: With dead ends: 18705 [2022-11-03 02:08:40,664 INFO L226 Difference]: Without dead ends: 11292 [2022-11-03 02:08:40,703 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 [2022-11-03 02:08:40,704 INFO L413 NwaCegarLoop]: 2146 mSDtfsCounter, 1136 mSDsluCounter, 1956 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 3881 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:08:40,704 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 3881 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 527 Invalid, 3 Unknown, 0 Unchecked, 16.0s Time] [2022-11-03 02:08:40,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11292 states. [2022-11-03 02:08:41,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11292 to 11278. [2022-11-03 02:08:41,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11278 states, 7785 states have (on average 1.4308285163776493) internal successors, (11139), 8125 states have internal predecessors, (11139), 2706 states have call successors, (2706), 810 states have call predecessors, (2706), 786 states have return successors, (2742), 2588 states have call predecessors, (2742), 2702 states have call successors, (2742) [2022-11-03 02:08:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11278 states to 11278 states and 16587 transitions. [2022-11-03 02:08:41,348 INFO L78 Accepts]: Start accepts. Automaton has 11278 states and 16587 transitions. Word has length 446 [2022-11-03 02:08:41,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:08:41,349 INFO L495 AbstractCegarLoop]: Abstraction has 11278 states and 16587 transitions. [2022-11-03 02:08:41,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (50), 2 states have call predecessors, (50), 1 states have return successors, (47), 2 states have call predecessors, (47), 2 states have call successors, (47) [2022-11-03 02:08:41,350 INFO L276 IsEmpty]: Start isEmpty. Operand 11278 states and 16587 transitions. [2022-11-03 02:08:41,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 455 [2022-11-03 02:08:41,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:08:41,356 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 8, 8, 8, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:08:41,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:08:41,356 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:08:41,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:08:41,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1436950612, now seen corresponding path program 1 times [2022-11-03 02:08:41,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:08:41,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433911272] [2022-11-03 02:08:41,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:08:41,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:08:41,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:08:42,109 INFO L134 CoverageAnalysis]: Checked inductivity of 4207 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4207 trivial. 0 not checked. [2022-11-03 02:08:42,109 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:08:42,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433911272] [2022-11-03 02:08:42,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433911272] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:08:42,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:08:42,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:08:42,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53900482] [2022-11-03 02:08:42,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:08:42,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:08:42,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:08:42,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:08:42,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:08:42,113 INFO L87 Difference]: Start difference. First operand 11278 states and 16587 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:08:44,138 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 [] [2022-11-03 02:08:46,347 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:48,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:08:50,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:53,345 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:08:56,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:00,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:03,670 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 [] [2022-11-03 02:09:04,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:04,024 INFO L93 Difference]: Finished difference Result 29397 states and 43106 transitions. [2022-11-03 02:09:04,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:04,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) Word has length 454 [2022-11-03 02:09:04,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:04,160 INFO L225 Difference]: With dead ends: 29397 [2022-11-03 02:09:04,160 INFO L226 Difference]: Without dead ends: 18216 [2022-11-03 02:09:04,228 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 [2022-11-03 02:09:04,230 INFO L413 NwaCegarLoop]: 3094 mSDtfsCounter, 1513 mSDsluCounter, 2147 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 1 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1519 SdHoareTripleChecker+Valid, 5017 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:04,230 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1519 Valid, 5017 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 575 Invalid, 8 Unknown, 0 Unchecked, 21.3s Time] [2022-11-03 02:09:04,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18216 states. [2022-11-03 02:09:05,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18216 to 18162. [2022-11-03 02:09:05,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18162 states, 12520 states have (on average 1.4236421725239616) internal successors, (17824), 13073 states have internal predecessors, (17824), 4353 states have call successors, (4353), 1322 states have call predecessors, (4353), 1288 states have return successors, (4413), 4152 states have call predecessors, (4413), 4347 states have call successors, (4413) [2022-11-03 02:09:05,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18162 states to 18162 states and 26590 transitions. [2022-11-03 02:09:05,199 INFO L78 Accepts]: Start accepts. Automaton has 18162 states and 26590 transitions. Word has length 454 [2022-11-03 02:09:05,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:05,200 INFO L495 AbstractCegarLoop]: Abstraction has 18162 states and 26590 transitions. [2022-11-03 02:09:05,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (52), 2 states have call predecessors, (52), 1 states have return successors, (48), 2 states have call predecessors, (48), 2 states have call successors, (48) [2022-11-03 02:09:05,201 INFO L276 IsEmpty]: Start isEmpty. Operand 18162 states and 26590 transitions. [2022-11-03 02:09:05,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 492 [2022-11-03 02:09:05,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:05,221 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:05,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:09:05,222 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:05,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:05,222 INFO L85 PathProgramCache]: Analyzing trace with hash 80312459, now seen corresponding path program 1 times [2022-11-03 02:09:05,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:05,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649149204] [2022-11-03 02:09:05,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:05,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:05,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:06,353 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-03 02:09:06,353 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:06,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649149204] [2022-11-03 02:09:06,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649149204] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:06,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144446069] [2022-11-03 02:09:06,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:06,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:06,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:06,360 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:06,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:09:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:08,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 5156 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:08,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:09,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4386 trivial. 0 not checked. [2022-11-03 02:09:09,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:09:09,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144446069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:09:09,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:09:09,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-03 02:09:09,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393099999] [2022-11-03 02:09:09,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:09:09,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:09:09,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:09:09,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:09:09,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:09,054 INFO L87 Difference]: Start difference. First operand 18162 states and 26590 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2022-11-03 02:09:10,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.39s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:12,001 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:14,331 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:16,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-03 02:09:19,466 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:23,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:25,672 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:27,707 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:09:28,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:09:28,115 INFO L93 Difference]: Finished difference Result 36303 states and 53165 transitions. [2022-11-03 02:09:28,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:09:28,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) Word has length 491 [2022-11-03 02:09:28,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:09:28,231 INFO L225 Difference]: With dead ends: 36303 [2022-11-03 02:09:28,231 INFO L226 Difference]: Without dead ends: 18238 [2022-11-03 02:09:28,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 491 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:09:28,314 INFO L413 NwaCegarLoop]: 1931 mSDtfsCounter, 7 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 1 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 3854 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:09:28,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 3854 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 457 Invalid, 5 Unknown, 0 Unchecked, 18.5s Time] [2022-11-03 02:09:28,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18238 states. [2022-11-03 02:09:29,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18238 to 18178. [2022-11-03 02:09:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18178 states, 12536 states have (on average 1.4231014677728142) internal successors, (17840), 13089 states have internal predecessors, (17840), 4353 states have call successors, (4353), 1322 states have call predecessors, (4353), 1288 states have return successors, (4413), 4152 states have call predecessors, (4413), 4347 states have call successors, (4413) [2022-11-03 02:09:29,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18178 states to 18178 states and 26606 transitions. [2022-11-03 02:09:29,564 INFO L78 Accepts]: Start accepts. Automaton has 18178 states and 26606 transitions. Word has length 491 [2022-11-03 02:09:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:09:29,565 INFO L495 AbstractCegarLoop]: Abstraction has 18178 states and 26606 transitions. [2022-11-03 02:09:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (56), 2 states have call predecessors, (56), 1 states have return successors, (53), 1 states have call predecessors, (53), 1 states have call successors, (53) [2022-11-03 02:09:29,565 INFO L276 IsEmpty]: Start isEmpty. Operand 18178 states and 26606 transitions. [2022-11-03 02:09:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2022-11-03 02:09:29,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:09:29,584 INFO L195 NwaCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 10, 10, 10, 10, 10, 10, 10, 10, 10, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:09:29,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:09:29,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:29,805 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:09:29,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:09:29,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1525420732, now seen corresponding path program 1 times [2022-11-03 02:09:29,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:09:29,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249511707] [2022-11-03 02:09:29,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:29,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:09:30,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:30,941 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-03 02:09:30,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:09:30,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249511707] [2022-11-03 02:09:30,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249511707] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:09:30,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455986880] [2022-11-03 02:09:30,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:09:30,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:09:30,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:09:30,944 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:09:30,975 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_284219ee-6ea0-4447-96b8-caa2a3c8fb3f/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:09:34,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:09:34,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 5162 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:09:34,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:09:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 168 proven. 1 refuted. 0 times theorem prover too weak. 4217 trivial. 0 not checked. [2022-11-03 02:09:34,439 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:09:35,124 INFO L134 CoverageAnalysis]: Checked inductivity of 4386 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 4379 trivial. 0 not checked. [2022-11-03 02:09:35,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455986880] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:09:35,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1002217388] [2022-11-03 02:09:35,157 INFO L159 IcfgInterpreter]: Started Sifa with 163 locations of interest [2022-11-03 02:09:35,157 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:09:35,162 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:09:35,170 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:09:35,170 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:09:37,908 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-03 02:09:38,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,108 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,111 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,115 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,129 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,131 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,137 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,140 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,144 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,147 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,150 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,152 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,160 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,162 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,165 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,167 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:38,219 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 66 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 183 [2022-11-03 02:09:41,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,492 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:41,992 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:42,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:42,312 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:42,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:43,026 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:43,143 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:43,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:43,427 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:43,542 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:43,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:43,800 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:43,946 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,037 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,338 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,605 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,668 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,789 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,844 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,897 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,947 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:44,993 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:45,065 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:45,128 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:45,181 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:45,183 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:45,185 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:45,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:09:45,236 INFO L244 Elim1Store]: Index analysis took 4412 ms