./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version aef121e0 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 02:29:29,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 02:29:29,571 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 02:29:29,609 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 02:29:29,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 02:29:29,612 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 02:29:29,614 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 02:29:29,617 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 02:29:29,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 02:29:29,621 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 02:29:29,622 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 02:29:29,624 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 02:29:29,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 02:29:29,627 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 02:29:29,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 02:29:29,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 02:29:29,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 02:29:29,634 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 02:29:29,637 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 02:29:29,640 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 02:29:29,643 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 02:29:29,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 02:29:29,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 02:29:29,648 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 02:29:29,652 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 02:29:29,661 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 02:29:29,662 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 02:29:29,663 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 02:29:29,664 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 02:29:29,665 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 02:29:29,667 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 02:29:29,668 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 02:29:29,670 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 02:29:29,672 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 02:29:29,674 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 02:29:29,675 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 02:29:29,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 02:29:29,677 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 02:29:29,677 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 02:29:29,678 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 02:29:29,679 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 02:29:29,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 02:29:29,725 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 02:29:29,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 02:29:29,725 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 02:29:29,726 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 02:29:29,726 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 02:29:29,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 02:29:29,727 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 02:29:29,727 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 02:29:29,728 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 02:29:29,728 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 02:29:29,728 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 02:29:29,728 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 02:29:29,729 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 02:29:29,729 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 02:29:29,729 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 02:29:29,729 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 02:29:29,730 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 02:29:29,730 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 02:29:29,731 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 02:29:29,731 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 02:29:29,731 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 02:29:29,732 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 02:29:29,732 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 02:29:29,732 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 02:29:29,732 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 02:29:29,733 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 02:29:29,733 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 02:29:29,733 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 02:29:29,734 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 02:29:29,734 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:29:29,734 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 02:29:29,734 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 02:29:29,735 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 02:29:29,735 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 02:29:29,735 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 02:29:29,735 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 02:29:29,736 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 02:29:29,736 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 02:29:29,736 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 796dd9af134a9ffa7d65525922d125c3e75a459db15e4643a4f13ca47d95e4ce [2021-11-23 02:29:30,123 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 02:29:30,154 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 02:29:30,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 02:29:30,159 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 02:29:30,160 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 02:29:30,161 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-23 02:29:30,269 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/data/472046533/794a012890be4a6386137eeffdf1c7d8/FLAG94e893298 [2021-11-23 02:29:31,407 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 02:29:31,408 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-23 02:29:31,457 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/data/472046533/794a012890be4a6386137eeffdf1c7d8/FLAG94e893298 [2021-11-23 02:29:31,763 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/data/472046533/794a012890be4a6386137eeffdf1c7d8 [2021-11-23 02:29:31,767 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 02:29:31,768 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 02:29:31,770 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 02:29:31,771 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 02:29:31,775 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 02:29:31,776 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:31" (1/1) ... [2021-11-23 02:29:31,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52199427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:31, skipping insertion in model container [2021-11-23 02:29:31,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:29:31" (1/1) ... [2021-11-23 02:29:31,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 02:29:31,984 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 02:29:34,459 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_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-23 02:29:34,537 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:29:34,576 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 02:29:35,078 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_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i[263179,263192] [2021-11-23 02:29:35,087 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 02:29:35,243 INFO L208 MainTranslator]: Completed translation [2021-11-23 02:29:35,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35 WrapperNode [2021-11-23 02:29:35,245 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 02:29:35,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 02:29:35,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 02:29:35,247 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 02:29:35,255 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,393 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,592 INFO L137 Inliner]: procedures = 262, calls = 1347, calls flagged for inlining = 121, calls inlined = 116, statements flattened = 3303 [2021-11-23 02:29:35,592 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 02:29:35,593 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 02:29:35,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 02:29:35,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 02:29:35,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,604 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,788 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 02:29:35,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 02:29:35,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 02:29:35,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 02:29:35,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (1/1) ... [2021-11-23 02:29:35,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 02:29:35,910 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:29:35,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 02:29:35,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 02:29:35,986 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_txfree [2021-11-23 02:29:35,986 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_txfree [2021-11-23 02:29:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_write [2021-11-23 02:29:35,987 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_write [2021-11-23 02:29:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 02:29:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 02:29:35,987 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2021-11-23 02:29:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2021-11-23 02:29:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_timeout [2021-11-23 02:29:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_timeout [2021-11-23 02:29:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 02:29:35,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 02:29:35,988 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 02:29:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 02:29:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset_after_host_error [2021-11-23 02:29:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset_after_host_error [2021-11-23 02:29:35,989 INFO L130 BoogieDeclarations]: Found specification of procedure netif_wake_queue [2021-11-23 02:29:35,989 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_wake_queue [2021-11-23 02:29:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-23 02:29:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-23 02:29:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 02:29:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 02:29:35,990 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 02:29:35,990 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 02:29:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure init_tfdlist [2021-11-23 02:29:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure init_tfdlist [2021-11-23 02:29:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 02:29:35,991 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 02:29:35,991 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 02:29:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 02:29:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure queue_delayed_work_on [2021-11-23 02:29:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_delayed_work_on [2021-11-23 02:29:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure pci_map_single [2021-11-23 02:29:35,992 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_map_single [2021-11-23 02:29:35,992 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_2 [2021-11-23 02:29:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_2 [2021-11-23 02:29:35,993 INFO L130 BoogieDeclarations]: Found specification of procedure valid_dma_direction [2021-11-23 02:29:35,993 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_dma_direction [2021-11-23 02:29:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite16 [2021-11-23 02:29:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite16 [2021-11-23 02:29:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_set_multicast_list [2021-11-23 02:29:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_set_multicast_list [2021-11-23 02:29:35,994 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite8 [2021-11-23 02:29:35,994 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite8 [2021-11-23 02:29:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 02:29:35,995 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 02:29:35,995 INFO L130 BoogieDeclarations]: Found specification of procedure ioread32 [2021-11-23 02:29:35,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread32 [2021-11-23 02:29:35,996 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2021-11-23 02:29:35,997 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2021-11-23 02:29:35,997 INFO L130 BoogieDeclarations]: Found specification of procedure pci_name [2021-11-23 02:29:35,998 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_name [2021-11-23 02:29:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_tx_clear [2021-11-23 02:29:35,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_tx_clear [2021-11-23 02:29:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_rx_clear [2021-11-23 02:29:35,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_rx_clear [2021-11-23 02:29:35,998 INFO L130 BoogieDeclarations]: Found specification of procedure read_eeprom [2021-11-23 02:29:35,999 INFO L138 BoogieDeclarations]: Found implementation of procedure read_eeprom [2021-11-23 02:29:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 02:29:35,999 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2021-11-23 02:29:36,000 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2021-11-23 02:29:36,000 INFO L130 BoogieDeclarations]: Found specification of procedure eth_mac_addr [2021-11-23 02:29:36,000 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_mac_addr [2021-11-23 02:29:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure skb_checksum_none_assert [2021-11-23 02:29:36,001 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_checksum_none_assert [2021-11-23 02:29:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 02:29:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure iowrite32 [2021-11-23 02:29:36,001 INFO L138 BoogieDeclarations]: Found implementation of procedure iowrite32 [2021-11-23 02:29:36,001 INFO L130 BoogieDeclarations]: Found specification of procedure eth_validate_addr [2021-11-23 02:29:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_validate_addr [2021-11-23 02:29:36,002 INFO L130 BoogieDeclarations]: Found specification of procedure netif_rx [2021-11-23 02:29:36,002 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_rx [2021-11-23 02:29:36,003 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-23 02:29:36,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-23 02:29:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_free_skb [2021-11-23 02:29:36,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_free_skb [2021-11-23 02:29:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure pci_unmap_single [2021-11-23 02:29:36,004 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_unmap_single [2021-11-23 02:29:36,004 INFO L130 BoogieDeclarations]: Found specification of procedure send_three_state [2021-11-23 02:29:36,005 INFO L138 BoogieDeclarations]: Found implementation of procedure send_three_state [2021-11-23 02:29:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 02:29:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 02:29:36,005 INFO L130 BoogieDeclarations]: Found specification of procedure read_phy_bit [2021-11-23 02:29:36,006 INFO L138 BoogieDeclarations]: Found implementation of procedure read_phy_bit [2021-11-23 02:29:36,006 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 02:29:36,008 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 02:29:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2021-11-23 02:29:36,008 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2021-11-23 02:29:36,008 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2021-11-23 02:29:36,010 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2021-11-23 02:29:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 02:29:36,010 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2021-11-23 02:29:36,010 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2021-11-23 02:29:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure get_dma_ops [2021-11-23 02:29:36,011 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dma_ops [2021-11-23 02:29:36,011 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_io_config [2021-11-23 02:29:36,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_io_config [2021-11-23 02:29:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure init_rfdlist [2021-11-23 02:29:36,012 INFO L138 BoogieDeclarations]: Found implementation of procedure init_rfdlist [2021-11-23 02:29:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_open [2021-11-23 02:29:36,012 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_open [2021-11-23 02:29:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 02:29:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioctl [2021-11-23 02:29:36,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioctl [2021-11-23 02:29:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2021-11-23 02:29:36,014 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2021-11-23 02:29:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 02:29:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure free_netdev [2021-11-23 02:29:36,014 INFO L138 BoogieDeclarations]: Found implementation of procedure free_netdev [2021-11-23 02:29:36,014 INFO L130 BoogieDeclarations]: Found specification of procedure __phys_addr [2021-11-23 02:29:36,015 INFO L138 BoogieDeclarations]: Found implementation of procedure __phys_addr [2021-11-23 02:29:36,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 02:29:36,019 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 02:29:36,019 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2021-11-23 02:29:36,020 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2021-11-23 02:29:36,020 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_flags [2021-11-23 02:29:36,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_flags [2021-11-23 02:29:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2021-11-23 02:29:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2021-11-23 02:29:36,023 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2021-11-23 02:29:36,023 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2021-11-23 02:29:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 02:29:36,029 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2021-11-23 02:29:36,030 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2021-11-23 02:29:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2021-11-23 02:29:36,030 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2021-11-23 02:29:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure eth_type_trans [2021-11-23 02:29:36,030 INFO L138 BoogieDeclarations]: Found implementation of procedure eth_type_trans [2021-11-23 02:29:36,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 02:29:36,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 02:29:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_get_stats [2021-11-23 02:29:36,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_get_stats [2021-11-23 02:29:36,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 02:29:36,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 02:29:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rxrestore [2021-11-23 02:29:36,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rxrestore [2021-11-23 02:29:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 02:29:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_stop [2021-11-23 02:29:36,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_stop [2021-11-23 02:29:36,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 02:29:36,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 02:29:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_config_autoneg [2021-11-23 02:29:36,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_config_autoneg [2021-11-23 02:29:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 02:29:36,033 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2021-11-23 02:29:36,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2021-11-23 02:29:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 02:29:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2021-11-23 02:29:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2021-11-23 02:29:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure ioread16 [2021-11-23 02:29:36,034 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread16 [2021-11-23 02:29:36,034 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_ioaddr [2021-11-23 02:29:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_ioaddr [2021-11-23 02:29:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure ioread8 [2021-11-23 02:29:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ioread8 [2021-11-23 02:29:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_reset [2021-11-23 02:29:36,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_reset [2021-11-23 02:29:36,035 INFO L130 BoogieDeclarations]: Found specification of procedure pci_iounmap [2021-11-23 02:29:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_iounmap [2021-11-23 02:29:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2021-11-23 02:29:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2021-11-23 02:29:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_get_rxbuff [2021-11-23 02:29:36,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_get_rxbuff [2021-11-23 02:29:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2021-11-23 02:29:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2021-11-23 02:29:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_write_phy_ctl [2021-11-23 02:29:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_write_phy_ctl [2021-11-23 02:29:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_delayed_work [2021-11-23 02:29:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_delayed_work [2021-11-23 02:29:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_change_mtu [2021-11-23 02:29:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_change_mtu [2021-11-23 02:29:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-11-23 02:29:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-11-23 02:29:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 02:29:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_nic_rx_check_error [2021-11-23 02:29:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_nic_rx_check_error [2021-11-23 02:29:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure ipg_drive_phy_ctl_low_high [2021-11-23 02:29:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ipg_drive_phy_ctl_low_high [2021-11-23 02:29:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure mdio_read [2021-11-23 02:29:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure mdio_read [2021-11-23 02:29:36,039 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 02:29:36,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 02:29:36,885 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 02:29:36,890 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 02:29:37,884 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 02:29:41,196 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 02:29:42,020 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 02:29:42,020 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-11-23 02:29:42,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:42 BoogieIcfgContainer [2021-11-23 02:29:42,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 02:29:42,031 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 02:29:42,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 02:29:42,035 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 02:29:42,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:29:31" (1/3) ... [2021-11-23 02:29:42,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aec794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:42, skipping insertion in model container [2021-11-23 02:29:42,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:29:35" (2/3) ... [2021-11-23 02:29:42,037 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65aec794 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:29:42, skipping insertion in model container [2021-11-23 02:29:42,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:29:42" (3/3) ... [2021-11-23 02:29:42,040 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--net--ethernet--icplus--ipg.ko-entry_point.cil.out.i [2021-11-23 02:29:42,048 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 02:29:42,048 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 02:29:42,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 02:29:42,156 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 02:29:42,157 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 02:29:42,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 1110 states, 664 states have (on average 1.3132530120481927) internal successors, (872), 697 states have internal predecessors, (872), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) [2021-11-23 02:29:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-23 02:29:42,274 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:42,275 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:42,276 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:42,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:42,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1967851942, now seen corresponding path program 1 times [2021-11-23 02:29:42,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:42,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247337348] [2021-11-23 02:29:42,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:42,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:42,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:43,227 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:29:43,227 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:43,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247337348] [2021-11-23 02:29:43,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247337348] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:43,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:43,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:29:43,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418216230] [2021-11-23 02:29:43,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:43,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:29:43,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:43,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:29:43,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:29:43,315 INFO L87 Difference]: Start difference. First operand has 1110 states, 664 states have (on average 1.3132530120481927) internal successors, (872), 697 states have internal predecessors, (872), 364 states have call successors, (364), 83 states have call predecessors, (364), 82 states have return successors, (356), 356 states have call predecessors, (356), 356 states have call successors, (356) Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:29:47,478 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:49,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:50,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:50,855 INFO L93 Difference]: Finished difference Result 3253 states and 4730 transitions. [2021-11-23 02:29:50,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:29:50,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 93 [2021-11-23 02:29:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:50,898 INFO L225 Difference]: With dead ends: 3253 [2021-11-23 02:29:50,899 INFO L226 Difference]: Without dead ends: 2133 [2021-11-23 02:29:50,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:29:50,935 INFO L933 BasicCegarLoop]: 1764 mSDtfsCounter, 1507 mSDsluCounter, 5386 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1511 SdHoareTripleChecker+Valid, 6691 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:50,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1511 Valid, 6691 Invalid, 649 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2021-11-23 02:29:50,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2021-11-23 02:29:51,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2119. [2021-11-23 02:29:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2119 states, 1273 states have (on average 1.2985074626865671) internal successors, (1653), 1322 states have internal predecessors, (1653), 685 states have call successors, (685), 162 states have call predecessors, (685), 160 states have return successors, (686), 677 states have call predecessors, (686), 684 states have call successors, (686) [2021-11-23 02:29:51,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2119 states to 2119 states and 3024 transitions. [2021-11-23 02:29:51,277 INFO L78 Accepts]: Start accepts. Automaton has 2119 states and 3024 transitions. Word has length 93 [2021-11-23 02:29:51,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:51,279 INFO L470 AbstractCegarLoop]: Abstraction has 2119 states and 3024 transitions. [2021-11-23 02:29:51,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:29:51,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2119 states and 3024 transitions. [2021-11-23 02:29:51,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-23 02:29:51,298 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:51,298 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:51,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 02:29:51,299 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:51,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:51,301 INFO L85 PathProgramCache]: Analyzing trace with hash -642380745, now seen corresponding path program 1 times [2021-11-23 02:29:51,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:51,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342786311] [2021-11-23 02:29:51,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:51,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:51,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:51,663 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:29:51,664 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:51,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342786311] [2021-11-23 02:29:51,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342786311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:51,670 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:51,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:29:51,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076193608] [2021-11-23 02:29:51,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:51,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:29:51,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:51,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:29:51,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:29:51,676 INFO L87 Difference]: Start difference. First operand 2119 states and 3024 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:29:55,362 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:29:57,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:29:57,362 INFO L93 Difference]: Finished difference Result 4752 states and 6761 transitions. [2021-11-23 02:29:57,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:29:57,363 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 95 [2021-11-23 02:29:57,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:29:57,401 INFO L225 Difference]: With dead ends: 4752 [2021-11-23 02:29:57,401 INFO L226 Difference]: Without dead ends: 3170 [2021-11-23 02:29:57,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:29:57,417 INFO L933 BasicCegarLoop]: 1781 mSDtfsCounter, 1478 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 6718 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:29:57,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 6718 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-11-23 02:29:57,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3170 states. [2021-11-23 02:29:57,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3170 to 3151. [2021-11-23 02:29:57,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3151 states, 1896 states have (on average 1.2990506329113924) internal successors, (2463), 1967 states have internal predecessors, (2463), 1015 states have call successors, (1015), 242 states have call predecessors, (1015), 239 states have return successors, (1018), 1005 states have call predecessors, (1018), 1014 states have call successors, (1018) [2021-11-23 02:29:57,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 4496 transitions. [2021-11-23 02:29:57,647 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 4496 transitions. Word has length 95 [2021-11-23 02:29:57,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:29:57,651 INFO L470 AbstractCegarLoop]: Abstraction has 3151 states and 4496 transitions. [2021-11-23 02:29:57,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:29:57,651 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 4496 transitions. [2021-11-23 02:29:57,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-23 02:29:57,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:29:57,658 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:29:57,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 02:29:57,658 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:29:57,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:29:57,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1837300240, now seen corresponding path program 1 times [2021-11-23 02:29:57,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:29:57,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079529196] [2021-11-23 02:29:57,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:29:57,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:29:57,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:29:57,935 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:29:57,938 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:29:57,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079529196] [2021-11-23 02:29:57,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079529196] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:29:57,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:29:57,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:29:57,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468280020] [2021-11-23 02:29:57,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:29:57,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:29:57,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:29:57,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:29:57,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:29:57,947 INFO L87 Difference]: Start difference. First operand 3151 states and 4496 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:30:02,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:02,059 INFO L93 Difference]: Finished difference Result 5789 states and 8235 transitions. [2021-11-23 02:30:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:30:02,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 94 [2021-11-23 02:30:02,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:02,100 INFO L225 Difference]: With dead ends: 5789 [2021-11-23 02:30:02,101 INFO L226 Difference]: Without dead ends: 3174 [2021-11-23 02:30:02,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:30:02,125 INFO L933 BasicCegarLoop]: 1781 mSDtfsCounter, 1478 mSDsluCounter, 5398 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 6718 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:02,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1482 Valid, 6718 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-11-23 02:30:02,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2021-11-23 02:30:02,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 3155. [2021-11-23 02:30:02,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3155 states, 1900 states have (on average 1.298421052631579) internal successors, (2467), 1970 states have internal predecessors, (2467), 1014 states have call successors, (1014), 243 states have call predecessors, (1014), 240 states have return successors, (1017), 1005 states have call predecessors, (1017), 1013 states have call successors, (1017) [2021-11-23 02:30:02,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3155 states to 3155 states and 4498 transitions. [2021-11-23 02:30:02,399 INFO L78 Accepts]: Start accepts. Automaton has 3155 states and 4498 transitions. Word has length 94 [2021-11-23 02:30:02,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:02,400 INFO L470 AbstractCegarLoop]: Abstraction has 3155 states and 4498 transitions. [2021-11-23 02:30:02,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:30:02,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3155 states and 4498 transitions. [2021-11-23 02:30:02,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-23 02:30:02,413 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:02,413 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:02,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 02:30:02,414 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:02,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:02,416 INFO L85 PathProgramCache]: Analyzing trace with hash -811798035, now seen corresponding path program 1 times [2021-11-23 02:30:02,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:02,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075084016] [2021-11-23 02:30:02,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:02,417 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:30:02,676 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:02,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075084016] [2021-11-23 02:30:02,676 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075084016] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:02,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:02,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 02:30:02,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293299217] [2021-11-23 02:30:02,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:02,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 02:30:02,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:02,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 02:30:02,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-23 02:30:02,679 INFO L87 Difference]: Start difference. First operand 3155 states and 4498 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:30:06,160 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:07,710 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:08,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:08,706 INFO L93 Difference]: Finished difference Result 5517 states and 7819 transitions. [2021-11-23 02:30:08,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-23 02:30:08,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2021-11-23 02:30:08,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:08,735 INFO L225 Difference]: With dead ends: 5517 [2021-11-23 02:30:08,736 INFO L226 Difference]: Without dead ends: 2897 [2021-11-23 02:30:08,751 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-23 02:30:08,752 INFO L933 BasicCegarLoop]: 1779 mSDtfsCounter, 1475 mSDsluCounter, 5396 mSDsCounter, 0 mSdLazyCounter, 650 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 6712 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 650 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:08,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1479 Valid, 6712 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 650 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2021-11-23 02:30:08,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-11-23 02:30:08,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2881. [2021-11-23 02:30:08,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2881 states, 1725 states have (on average 1.2910144927536231) internal successors, (2227), 1782 states have internal predecessors, (2227), 926 states have call successors, (926), 232 states have call predecessors, (926), 229 states have return successors, (929), 918 states have call predecessors, (929), 925 states have call successors, (929) [2021-11-23 02:30:08,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2881 states to 2881 states and 4082 transitions. [2021-11-23 02:30:08,930 INFO L78 Accepts]: Start accepts. Automaton has 2881 states and 4082 transitions. Word has length 96 [2021-11-23 02:30:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:08,931 INFO L470 AbstractCegarLoop]: Abstraction has 2881 states and 4082 transitions. [2021-11-23 02:30:08,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 3 states have call successors, (16), 3 states have call predecessors, (16), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-23 02:30:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 2881 states and 4082 transitions. [2021-11-23 02:30:08,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-11-23 02:30:08,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:08,939 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:08,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 02:30:08,940 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:08,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:08,941 INFO L85 PathProgramCache]: Analyzing trace with hash 783302825, now seen corresponding path program 1 times [2021-11-23 02:30:08,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:08,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936724840] [2021-11-23 02:30:08,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:08,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:09,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:09,199 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-23 02:30:09,199 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:09,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936724840] [2021-11-23 02:30:09,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936724840] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:30:09,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483938698] [2021-11-23 02:30:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:09,201 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:09,201 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:09,207 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:30:09,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-23 02:30:10,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:10,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 2008 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:30:10,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:10,472 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:30:10,472 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:30:10,473 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [483938698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:10,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:30:10,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-11-23 02:30:10,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928933697] [2021-11-23 02:30:10,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:10,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:30:10,474 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:10,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:30:10,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-23 02:30:10,475 INFO L87 Difference]: Start difference. First operand 2881 states and 4082 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:30:15,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.58s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:16,970 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:18,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:18,976 INFO L93 Difference]: Finished difference Result 6824 states and 9673 transitions. [2021-11-23 02:30:18,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:30:18,977 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2021-11-23 02:30:18,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:19,020 INFO L225 Difference]: With dead ends: 6824 [2021-11-23 02:30:19,020 INFO L226 Difference]: Without dead ends: 4707 [2021-11-23 02:30:19,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2021-11-23 02:30:19,035 INFO L933 BasicCegarLoop]: 2080 mSDtfsCounter, 1509 mSDsluCounter, 10629 mSDsCounter, 0 mSdLazyCounter, 1174 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 11791 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:19,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 11791 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1174 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2021-11-23 02:30:19,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4707 states. [2021-11-23 02:30:19,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4707 to 4674. [2021-11-23 02:30:19,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 2798 states have (on average 1.2912794853466762) internal successors, (3613), 2894 states have internal predecessors, (3613), 1498 states have call successors, (1498), 380 states have call predecessors, (1498), 377 states have return successors, (1510), 1481 states have call predecessors, (1510), 1497 states have call successors, (1510) [2021-11-23 02:30:19,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6621 transitions. [2021-11-23 02:30:19,414 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6621 transitions. Word has length 106 [2021-11-23 02:30:19,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:19,414 INFO L470 AbstractCegarLoop]: Abstraction has 4674 states and 6621 transitions. [2021-11-23 02:30:19,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:30:19,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6621 transitions. [2021-11-23 02:30:19,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-23 02:30:19,426 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:19,427 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:19,474 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:19,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:19,652 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:19,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:19,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1212750226, now seen corresponding path program 1 times [2021-11-23 02:30:19,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:19,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613107229] [2021-11-23 02:30:19,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:19,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:19,918 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:30:19,918 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:19,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613107229] [2021-11-23 02:30:19,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613107229] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:30:19,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491817456] [2021-11-23 02:30:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:19,919 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:19,920 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:19,921 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:30:19,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-23 02:30:20,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:20,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 2010 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:30:20,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:21,189 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:30:21,189 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:30:21,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491817456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:21,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:30:21,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-23 02:30:21,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636793512] [2021-11-23 02:30:21,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:21,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:30:21,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:21,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:30:21,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:30:21,192 INFO L87 Difference]: Start difference. First operand 4674 states and 6621 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:30:26,061 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:27,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:27,816 INFO L93 Difference]: Finished difference Result 10782 states and 15237 transitions. [2021-11-23 02:30:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:30:27,817 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 107 [2021-11-23 02:30:27,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:27,886 INFO L225 Difference]: With dead ends: 10782 [2021-11-23 02:30:27,886 INFO L226 Difference]: Without dead ends: 6872 [2021-11-23 02:30:27,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:30:27,914 INFO L933 BasicCegarLoop]: 2052 mSDtfsCounter, 1318 mSDsluCounter, 10508 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1322 SdHoareTripleChecker+Valid, 11639 SdHoareTripleChecker+Invalid, 1183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:27,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1322 Valid, 11639 Invalid, 1183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1180 Invalid, 1 Unknown, 0 Unchecked, 6.3s Time] [2021-11-23 02:30:27,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6872 states. [2021-11-23 02:30:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6872 to 6827. [2021-11-23 02:30:28,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6827 states, 4091 states have (on average 1.2916157418724028) internal successors, (5284), 4231 states have internal predecessors, (5284), 2163 states have call successors, (2163), 574 states have call predecessors, (2163), 572 states have return successors, (2189), 2133 states have call predecessors, (2189), 2162 states have call successors, (2189) [2021-11-23 02:30:28,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6827 states to 6827 states and 9636 transitions. [2021-11-23 02:30:28,459 INFO L78 Accepts]: Start accepts. Automaton has 6827 states and 9636 transitions. Word has length 107 [2021-11-23 02:30:28,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:28,461 INFO L470 AbstractCegarLoop]: Abstraction has 6827 states and 9636 transitions. [2021-11-23 02:30:28,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:30:28,462 INFO L276 IsEmpty]: Start isEmpty. Operand 6827 states and 9636 transitions. [2021-11-23 02:30:28,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-11-23 02:30:28,475 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:28,475 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:28,520 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:28,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:28,703 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:28,704 INFO L85 PathProgramCache]: Analyzing trace with hash -513491678, now seen corresponding path program 1 times [2021-11-23 02:30:28,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:28,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621920522] [2021-11-23 02:30:28,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:28,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:28,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:28,970 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:30:28,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:28,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621920522] [2021-11-23 02:30:28,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621920522] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:30:28,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689428536] [2021-11-23 02:30:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:28,971 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:28,971 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:28,973 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:30:28,995 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-23 02:30:29,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:29,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 2012 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:30:29,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:30,020 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:30:30,020 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:30:30,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689428536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:30,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:30:30,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-23 02:30:30,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059388732] [2021-11-23 02:30:30,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:30,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:30:30,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:30,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:30:30,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:30:30,022 INFO L87 Difference]: Start difference. First operand 6827 states and 9636 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:30:34,770 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:37,218 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.54s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:38,656 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:40,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:40,257 INFO L93 Difference]: Finished difference Result 14112 states and 19937 transitions. [2021-11-23 02:30:40,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:30:40,258 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 108 [2021-11-23 02:30:40,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:40,336 INFO L225 Difference]: With dead ends: 14112 [2021-11-23 02:30:40,336 INFO L226 Difference]: Without dead ends: 8662 [2021-11-23 02:30:40,372 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:30:40,373 INFO L933 BasicCegarLoop]: 2101 mSDtfsCounter, 1509 mSDsluCounter, 10710 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 11884 SdHoareTripleChecker+Invalid, 1189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:40,373 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 11884 Invalid, 1189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1186 Invalid, 1 Unknown, 0 Unchecked, 9.9s Time] [2021-11-23 02:30:40,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8662 states. [2021-11-23 02:30:40,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8662 to 8596. [2021-11-23 02:30:40,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 5145 states have (on average 1.2919339164237122) internal successors, (6647), 5322 states have internal predecessors, (6647), 2733 states have call successors, (2733), 720 states have call predecessors, (2733), 717 states have return successors, (2766), 2695 states have call predecessors, (2766), 2732 states have call successors, (2766) [2021-11-23 02:30:40,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 12146 transitions. [2021-11-23 02:30:40,910 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 12146 transitions. Word has length 108 [2021-11-23 02:30:40,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:40,911 INFO L470 AbstractCegarLoop]: Abstraction has 8596 states and 12146 transitions. [2021-11-23 02:30:40,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 5 states have internal predecessors, (48), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:30:40,911 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 12146 transitions. [2021-11-23 02:30:40,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-23 02:30:40,926 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:40,926 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:40,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:41,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-11-23 02:30:41,140 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:41,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:41,140 INFO L85 PathProgramCache]: Analyzing trace with hash 2136047815, now seen corresponding path program 1 times [2021-11-23 02:30:41,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:41,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694737526] [2021-11-23 02:30:41,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:41,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:41,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:41,384 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:30:41,385 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:41,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694737526] [2021-11-23 02:30:41,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694737526] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:30:41,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183387900] [2021-11-23 02:30:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:41,386 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:30:41,386 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:30:41,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:30:41,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-23 02:30:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:42,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 2014 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-23 02:30:42,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:30:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2021-11-23 02:30:42,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-23 02:30:42,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183387900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:42,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-23 02:30:42,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-11-23 02:30:42,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424964595] [2021-11-23 02:30:42,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:42,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-23 02:30:42,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:42,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-23 02:30:42,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2021-11-23 02:30:42,608 INFO L87 Difference]: Start difference. First operand 8596 states and 12146 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:30:49,231 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:51,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:30:53,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:53,272 INFO L93 Difference]: Finished difference Result 17651 states and 24958 transitions. [2021-11-23 02:30:53,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-23 02:30:53,273 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 109 [2021-11-23 02:30:53,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:53,342 INFO L225 Difference]: With dead ends: 17651 [2021-11-23 02:30:53,342 INFO L226 Difference]: Without dead ends: 10432 [2021-11-23 02:30:53,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2021-11-23 02:30:53,382 INFO L933 BasicCegarLoop]: 2101 mSDtfsCounter, 1509 mSDsluCounter, 10709 mSDsCounter, 0 mSdLazyCounter, 1184 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1513 SdHoareTripleChecker+Valid, 11884 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1184 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:53,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1513 Valid, 11884 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1184 Invalid, 2 Unknown, 0 Unchecked, 10.3s Time] [2021-11-23 02:30:53,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10432 states. [2021-11-23 02:30:53,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10432 to 8597. [2021-11-23 02:30:53,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8597 states, 5146 states have (on average 1.2918771861640108) internal successors, (6648), 5322 states have internal predecessors, (6648), 2733 states have call successors, (2733), 720 states have call predecessors, (2733), 717 states have return successors, (2766), 2696 states have call predecessors, (2766), 2732 states have call successors, (2766) [2021-11-23 02:30:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8597 states to 8597 states and 12147 transitions. [2021-11-23 02:30:54,022 INFO L78 Accepts]: Start accepts. Automaton has 8597 states and 12147 transitions. Word has length 109 [2021-11-23 02:30:54,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:54,023 INFO L470 AbstractCegarLoop]: Abstraction has 8597 states and 12147 transitions. [2021-11-23 02:30:54,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 3 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2021-11-23 02:30:54,023 INFO L276 IsEmpty]: Start isEmpty. Operand 8597 states and 12147 transitions. [2021-11-23 02:30:54,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-23 02:30:54,043 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:54,043 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:30:54,094 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-23 02:30:54,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-23 02:30:54,271 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:54,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:54,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1169933182, now seen corresponding path program 1 times [2021-11-23 02:30:54,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:54,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979085407] [2021-11-23 02:30:54,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:54,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:54,495 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-23 02:30:54,496 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:54,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979085407] [2021-11-23 02:30:54,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979085407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:54,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:54,497 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:30:54,497 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812237757] [2021-11-23 02:30:54,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:54,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:30:54,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:54,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:30:54,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:54,499 INFO L87 Difference]: Start difference. First operand 8597 states and 12147 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:30:56,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:30:56,003 INFO L93 Difference]: Finished difference Result 10293 states and 14305 transitions. [2021-11-23 02:30:56,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:30:56,004 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 125 [2021-11-23 02:30:56,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:30:56,064 INFO L225 Difference]: With dead ends: 10293 [2021-11-23 02:30:56,065 INFO L226 Difference]: Without dead ends: 10290 [2021-11-23 02:30:56,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:56,073 INFO L933 BasicCegarLoop]: 1577 mSDtfsCounter, 1134 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-23 02:30:56,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1134 Valid, 2217 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-23 02:30:56,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10290 states. [2021-11-23 02:30:56,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10290 to 10290. [2021-11-23 02:30:56,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10290 states, 5973 states have (on average 1.2630169094257493) internal successors, (7544), 6154 states have internal predecessors, (7544), 3358 states have call successors, (3358), 961 states have call predecessors, (3358), 958 states have return successors, (3391), 3321 states have call predecessors, (3391), 3357 states have call successors, (3391) [2021-11-23 02:30:56,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10290 states to 10290 states and 14293 transitions. [2021-11-23 02:30:56,712 INFO L78 Accepts]: Start accepts. Automaton has 10290 states and 14293 transitions. Word has length 125 [2021-11-23 02:30:56,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:30:56,713 INFO L470 AbstractCegarLoop]: Abstraction has 10290 states and 14293 transitions. [2021-11-23 02:30:56,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (23), 3 states have call predecessors, (23), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2021-11-23 02:30:56,714 INFO L276 IsEmpty]: Start isEmpty. Operand 10290 states and 14293 transitions. [2021-11-23 02:30:56,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-11-23 02:30:56,753 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:30:56,753 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-23 02:30:56,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 02:30:56,754 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:30:56,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:30:56,754 INFO L85 PathProgramCache]: Analyzing trace with hash 680065949, now seen corresponding path program 1 times [2021-11-23 02:30:56,755 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:30:56,755 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804594756] [2021-11-23 02:30:56,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:30:56,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:30:56,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:30:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2021-11-23 02:30:56,919 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:30:56,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804594756] [2021-11-23 02:30:56,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804594756] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:30:56,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 02:30:56,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 02:30:56,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698569952] [2021-11-23 02:30:56,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:30:56,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 02:30:56,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:30:56,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 02:30:56,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:30:56,923 INFO L87 Difference]: Start difference. First operand 10290 states and 14293 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:30:59,258 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:31:00,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:31:00,342 INFO L93 Difference]: Finished difference Result 26135 states and 36129 transitions. [2021-11-23 02:31:00,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 02:31:00,355 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 143 [2021-11-23 02:31:00,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:31:00,448 INFO L225 Difference]: With dead ends: 26135 [2021-11-23 02:31:00,448 INFO L226 Difference]: Without dead ends: 15861 [2021-11-23 02:31:00,496 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 02:31:00,498 INFO L933 BasicCegarLoop]: 1626 mSDtfsCounter, 1003 mSDsluCounter, 1443 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 7 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1003 SdHoareTripleChecker+Valid, 2930 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:31:00,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1003 Valid, 2930 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 368 Invalid, 1 Unknown, 0 Unchecked, 2.9s Time] [2021-11-23 02:31:00,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15861 states. [2021-11-23 02:31:01,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15861 to 15840. [2021-11-23 02:31:01,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15840 states, 9250 states have (on average 1.2615135135135136) internal successors, (11669), 9552 states have internal predecessors, (11669), 5056 states have call successors, (5056), 1528 states have call predecessors, (5056), 1533 states have return successors, (5103), 4995 states have call predecessors, (5103), 5055 states have call successors, (5103) [2021-11-23 02:31:01,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15840 states to 15840 states and 21828 transitions. [2021-11-23 02:31:01,454 INFO L78 Accepts]: Start accepts. Automaton has 15840 states and 21828 transitions. Word has length 143 [2021-11-23 02:31:01,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:31:01,457 INFO L470 AbstractCegarLoop]: Abstraction has 15840 states and 21828 transitions. [2021-11-23 02:31:01,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2021-11-23 02:31:01,457 INFO L276 IsEmpty]: Start isEmpty. Operand 15840 states and 21828 transitions. [2021-11-23 02:31:01,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-23 02:31:01,467 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:31:01,468 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:31:01,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 02:31:01,468 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:31:01,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:31:01,469 INFO L85 PathProgramCache]: Analyzing trace with hash 1668267233, now seen corresponding path program 1 times [2021-11-23 02:31:01,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:31:01,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48894983] [2021-11-23 02:31:01,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:01,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:31:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:01,695 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-23 02:31:01,695 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:31:01,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48894983] [2021-11-23 02:31:01,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48894983] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:31:01,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800567284] [2021-11-23 02:31:01,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:31:01,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:31:01,697 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:31:01,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:31:01,719 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-23 02:31:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:31:02,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:31:02,696 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:31:03,213 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-11-23 02:31:03,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:31:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2021-11-23 02:31:03,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800567284] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:31:03,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1656398856] [2021-11-23 02:31:03,788 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2021-11-23 02:31:03,788 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:31:03,794 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:31:03,799 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:31:03,800 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:31:06,300 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:31:06,302 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:31:06,354 INFO L244 Elim1Store]: Index analysis took 224 ms [2021-11-23 02:31:09,375 INFO L354 Elim1Store]: treesize reduction 1114, result has 31.7 percent of original size [2021-11-23 02:31:09,376 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 47 select indices, 47 select index equivalence classes, 1085 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 47 case distinctions, treesize of input 245 treesize of output 667 [2021-11-23 02:31:10,346 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:31:10,399 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:31:10,415 INFO L244 Elim1Store]: Index analysis took 296 ms [2021-11-23 02:31:15,844 WARN L227 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 751 DAG size of output: 375 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:31:15,861 INFO L354 Elim1Store]: treesize reduction 1770, result has 25.4 percent of original size [2021-11-23 02:31:15,863 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 50 select indices, 50 select index equivalence classes, 1132 disjoint index pairs (out of 1225 index pairs), introduced 50 new quantified variables, introduced 141 case distinctions, treesize of input 264 treesize of output 773 [2021-11-23 02:31:16,466 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:31:16,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:31:16,789 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:31:16,918 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:31:17,013 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:31:17,164 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:31:17,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:31:17,420 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:31:17,456 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:31:17,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:17,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:31:17,678 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-23 02:31:17,867 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:31:19,097 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:19,125 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:31:19,150 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:19,173 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:19,175 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:19,179 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:19,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:31:19,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:19,658 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:19,688 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:19,691 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:19,693 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:20,826 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:31:20,856 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:20,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:20,920 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:20,929 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:20,932 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:21,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:21,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:21,624 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:31:21,655 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:21,666 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:21,669 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:23,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:31:23,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:23,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:23,335 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:23,338 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:23,341 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:24,018 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:24,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:31:24,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:31:24,135 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:24,138 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:24,141 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:31:28,130 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:31:28,332 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:31:28,380 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 281 for LOIs [2021-11-23 02:31:28,729 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 225 for LOIs [2021-11-23 02:31:29,531 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:29,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:31:30,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:30,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:31:32,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:31:32,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:34,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:31:34,089 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:31:34,132 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 236 for LOIs [2021-11-23 02:31:34,427 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 212 for LOIs [2021-11-23 02:31:34,526 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:32:33,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1656398856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:32:33,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:32:33,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [8, 10, 10] total 39 [2021-11-23 02:32:33,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973713828] [2021-11-23 02:32:33,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:32:33,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-23 02:32:33,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:32:33,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-23 02:32:33,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 02:32:33,773 INFO L87 Difference]: Start difference. First operand 15840 states and 21828 transitions. Second operand has 23 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 8 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-23 02:32:48,040 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:06,058 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:08,130 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:10,155 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:12,758 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:21,902 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:23,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:28,208 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:30,492 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:33,560 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:33:34,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:33:34,470 INFO L93 Difference]: Finished difference Result 31682 states and 43654 transitions. [2021-11-23 02:33:34,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-23 02:33:34,471 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 8 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 146 [2021-11-23 02:33:34,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:33:34,543 INFO L225 Difference]: With dead ends: 31682 [2021-11-23 02:33:34,543 INFO L226 Difference]: Without dead ends: 15852 [2021-11-23 02:33:34,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 405 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 59.5s TimeCoverageRelationStatistics Valid=165, Invalid=1317, Unknown=0, NotChecked=0, Total=1482 [2021-11-23 02:33:34,606 INFO L933 BasicCegarLoop]: 1391 mSDtfsCounter, 5 mSDsluCounter, 15435 mSDsCounter, 0 mSdLazyCounter, 6429 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 15719 SdHoareTripleChecker+Invalid, 7572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 6429 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 1131 IncrementalHoareTripleChecker+Unchecked, 59.9s IncrementalHoareTripleChecker+Time [2021-11-23 02:33:34,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7 Valid, 15719 Invalid, 7572 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [9 Valid, 6429 Invalid, 3 Unknown, 1131 Unchecked, 59.9s Time] [2021-11-23 02:33:34,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15852 states. [2021-11-23 02:33:35,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15852 to 15489. [2021-11-23 02:33:35,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15489 states, 9042 states have (on average 1.2613359876133599) internal successors, (11405), 9340 states have internal predecessors, (11405), 4950 states have call successors, (4950), 1492 states have call predecessors, (4950), 1496 states have return successors, (4997), 4889 states have call predecessors, (4997), 4949 states have call successors, (4997) [2021-11-23 02:33:35,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15489 states to 15489 states and 21352 transitions. [2021-11-23 02:33:35,623 INFO L78 Accepts]: Start accepts. Automaton has 15489 states and 21352 transitions. Word has length 146 [2021-11-23 02:33:35,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:33:35,627 INFO L470 AbstractCegarLoop]: Abstraction has 15489 states and 21352 transitions. [2021-11-23 02:33:35,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 13 states have (on average 4.461538461538462) internal successors, (58), 12 states have internal predecessors, (58), 8 states have call successors, (22), 5 states have call predecessors, (22), 4 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2021-11-23 02:33:35,627 INFO L276 IsEmpty]: Start isEmpty. Operand 15489 states and 21352 transitions. [2021-11-23 02:33:35,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-23 02:33:35,638 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:33:35,639 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:33:35,695 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-23 02:33:35,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:35,863 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:33:35,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:33:35,864 INFO L85 PathProgramCache]: Analyzing trace with hash -890906390, now seen corresponding path program 1 times [2021-11-23 02:33:35,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:33:35,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306808090] [2021-11-23 02:33:35,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:36,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:33:36,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:36,306 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-23 02:33:36,306 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:33:36,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306808090] [2021-11-23 02:33:36,307 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306808090] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:33:36,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285193037] [2021-11-23 02:33:36,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:33:36,307 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:33:36,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:33:36,311 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:33:36,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-23 02:33:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:33:37,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 2247 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:33:37,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:33:37,807 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 02:33:37,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:33:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-23 02:33:38,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285193037] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:33:38,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1090662525] [2021-11-23 02:33:38,437 INFO L159 IcfgInterpreter]: Started Sifa with 89 locations of interest [2021-11-23 02:33:38,438 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:33:38,439 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:33:38,439 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:33:38,439 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:33:39,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:33:39,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:33:40,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:40,291 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:40,330 INFO L244 Elim1Store]: Index analysis took 264 ms [2021-11-23 02:33:44,556 INFO L354 Elim1Store]: treesize reduction 1114, result has 31.7 percent of original size [2021-11-23 02:33:44,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 47 select indices, 47 select index equivalence classes, 1085 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 47 case distinctions, treesize of input 245 treesize of output 667 [2021-11-23 02:33:45,074 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:33:45,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:33:45,734 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:45,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:33:45,853 INFO L244 Elim1Store]: Index analysis took 427 ms [2021-11-23 02:33:52,686 WARN L227 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 751 DAG size of output: 375 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:33:52,688 INFO L354 Elim1Store]: treesize reduction 1770, result has 25.4 percent of original size [2021-11-23 02:33:52,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 50 select indices, 50 select index equivalence classes, 1132 disjoint index pairs (out of 1225 index pairs), introduced 50 new quantified variables, introduced 141 case distinctions, treesize of input 264 treesize of output 773 [2021-11-23 02:33:53,091 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:33:53,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:33:53,646 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:33:53,842 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:33:53,862 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:33:53,964 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:33:53,968 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:33:53,977 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-23 02:33:54,119 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:33:54,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:54,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:33:54,883 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:55,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:33:55,339 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:55,375 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:56,659 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:56,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:33:56,731 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:56,757 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:56,760 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:56,762 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:57,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:33:57,205 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:57,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:57,266 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:57,268 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:57,270 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:58,333 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:58,369 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:33:58,398 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:58,423 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:58,425 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:58,428 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:59,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:59,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:33:59,199 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:33:59,222 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:59,227 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:33:59,230 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:34:00,243 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:34:00,250 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:34:00,258 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:34:00,310 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-23 02:34:00,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 137 [2021-11-23 02:34:00,365 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-23 02:34:00,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 140 [2021-11-23 02:34:00,406 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-23 02:34:00,406 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 143 [2021-11-23 02:34:00,472 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:34:00,479 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:34:00,487 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:34:00,803 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:34:00,851 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:34:02,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:34:02,055 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:34:04,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:04,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:05,121 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:05,247 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:06,248 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:06,296 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:06,839 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:06,910 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:34:16,615 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:34:16,797 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:34:16,831 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 340 for LOIs [2021-11-23 02:34:17,907 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:34:17,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:34:17,985 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:34:18,083 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_irq_1 with input of size 248 for LOIs [2021-11-23 02:34:18,487 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 225 for LOIs [2021-11-23 02:34:19,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:34:19,448 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:34:20,561 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:34:20,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:34:21,571 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:34:21,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:34:23,528 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:34:23,577 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:34:23,588 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 236 for LOIs [2021-11-23 02:34:23,899 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 212 for LOIs [2021-11-23 02:34:24,010 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:34:31,913 WARN L227 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 225 DAG size of output: 224 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:35:59,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [1090662525] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:35:59,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:35:59,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [8, 10, 10] total 55 [2021-11-23 02:35:59,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541159276] [2021-11-23 02:35:59,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:35:59,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-11-23 02:35:59,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:35:59,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-11-23 02:35:59,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=303, Invalid=2667, Unknown=0, NotChecked=0, Total=2970 [2021-11-23 02:35:59,666 INFO L87 Difference]: Start difference. First operand 15489 states and 21352 transitions. Second operand has 39 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 11 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2021-11-23 02:36:40,182 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:42,224 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:44,264 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:45,471 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:47,351 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:49,382 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:51,446 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:53,490 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:55,534 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:36:58,530 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:00,326 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:02,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:03,936 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:05,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:07,599 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:34,675 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:39,903 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:41,315 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:51,296 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:56,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:37:59,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:04,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:06,223 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:08,343 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:38:09,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 02:38:09,404 INFO L93 Difference]: Finished difference Result 31216 states and 43083 transitions. [2021-11-23 02:38:09,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-11-23 02:38:09,405 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 11 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) Word has length 147 [2021-11-23 02:38:09,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 02:38:09,486 INFO L225 Difference]: With dead ends: 31216 [2021-11-23 02:38:09,487 INFO L226 Difference]: Without dead ends: 15750 [2021-11-23 02:38:09,536 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 452 GetRequests, 392 SyntacticMatches, 3 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 743 ImplicationChecksByTransitivity, 110.6s TimeCoverageRelationStatistics Valid=347, Invalid=3075, Unknown=0, NotChecked=0, Total=3422 [2021-11-23 02:38:09,537 INFO L933 BasicCegarLoop]: 1423 mSDtfsCounter, 215 mSDsluCounter, 26743 mSDsCounter, 0 mSdLazyCounter, 9844 mSolverCounterSat, 72 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 109.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 26121 SdHoareTripleChecker+Invalid, 11557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 9844 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 1629 IncrementalHoareTripleChecker+Unchecked, 114.1s IncrementalHoareTripleChecker+Time [2021-11-23 02:38:09,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 26121 Invalid, 11557 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [72 Valid, 9844 Invalid, 12 Unknown, 1629 Unchecked, 114.1s Time] [2021-11-23 02:38:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15750 states. [2021-11-23 02:38:10,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15750 to 15638. [2021-11-23 02:38:10,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15638 states, 9175 states have (on average 1.2637602179836511) internal successors, (11595), 9473 states have internal predecessors, (11595), 4964 states have call successors, (4964), 1494 states have call predecessors, (4964), 1498 states have return successors, (5011), 4903 states have call predecessors, (5011), 4963 states have call successors, (5011) [2021-11-23 02:38:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15638 states to 15638 states and 21570 transitions. [2021-11-23 02:38:10,522 INFO L78 Accepts]: Start accepts. Automaton has 15638 states and 21570 transitions. Word has length 147 [2021-11-23 02:38:10,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 02:38:10,522 INFO L470 AbstractCegarLoop]: Abstraction has 15638 states and 21570 transitions. [2021-11-23 02:38:10,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 26 states have (on average 2.269230769230769) internal successors, (59), 25 states have internal predecessors, (59), 11 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2021-11-23 02:38:10,523 INFO L276 IsEmpty]: Start isEmpty. Operand 15638 states and 21570 transitions. [2021-11-23 02:38:10,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-23 02:38:10,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 02:38:10,535 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 02:38:10,588 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-23 02:38:10,749 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:38:10,750 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 02:38:10,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 02:38:10,750 INFO L85 PathProgramCache]: Analyzing trace with hash -1328027452, now seen corresponding path program 1 times [2021-11-23 02:38:10,750 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 02:38:10,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946211948] [2021-11-23 02:38:10,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:10,751 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 02:38:10,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:10,993 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 8 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-11-23 02:38:10,994 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 02:38:10,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946211948] [2021-11-23 02:38:10,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946211948] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-23 02:38:10,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662359073] [2021-11-23 02:38:10,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 02:38:10,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-23 02:38:10,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 02:38:10,996 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-23 02:38:11,018 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e7f9d1c8-dda3-4202-a66e-2a0b862f0c6d/bin/utaipan-EQgc7hIp5V/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-23 02:38:11,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 02:38:11,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 2249 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-23 02:38:11,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-23 02:38:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 14 proven. 7 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-23 02:38:12,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-23 02:38:12,914 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 17 proven. 3 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-23 02:38:12,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662359073] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-23 02:38:12,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [277396645] [2021-11-23 02:38:12,919 INFO L159 IcfgInterpreter]: Started Sifa with 90 locations of interest [2021-11-23 02:38:12,919 INFO L166 IcfgInterpreter]: Building call graph [2021-11-23 02:38:12,920 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-23 02:38:12,920 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-23 02:38:12,921 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-23 02:38:14,590 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:38:14,592 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:38:14,630 INFO L244 Elim1Store]: Index analysis took 262 ms [2021-11-23 02:38:18,702 INFO L354 Elim1Store]: treesize reduction 1114, result has 31.7 percent of original size [2021-11-23 02:38:18,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 47 select indices, 47 select index equivalence classes, 1085 disjoint index pairs (out of 1081 index pairs), introduced 47 new quantified variables, introduced 47 case distinctions, treesize of input 245 treesize of output 667 [2021-11-23 02:38:19,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:38:19,354 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:38:19,476 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:38:19,592 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:38:19,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:38:20,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:38:20,279 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-23 02:38:20,310 INFO L244 Elim1Store]: Index analysis took 404 ms [2021-11-23 02:38:27,154 WARN L227 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 751 DAG size of output: 375 (called from [L 351] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2021-11-23 02:38:27,156 INFO L354 Elim1Store]: treesize reduction 1770, result has 25.4 percent of original size [2021-11-23 02:38:27,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 50 select indices, 50 select index equivalence classes, 1132 disjoint index pairs (out of 1225 index pairs), introduced 50 new quantified variables, introduced 141 case distinctions, treesize of input 264 treesize of output 773 [2021-11-23 02:38:27,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:38:27,671 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 10 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 26 [2021-11-23 02:38:27,907 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:38:27,923 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:38:28,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:38:28,030 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:38:28,037 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2021-11-23 02:38:28,130 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:38:28,701 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:28,744 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:38:28,775 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:29,016 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:29,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:29,093 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:38:29,850 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:29,877 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:38:29,902 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:29,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:38:29,926 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:38:29,929 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:38:30,342 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:30,366 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:38:30,390 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:30,411 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:38:30,413 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:38:30,415 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-11-23 02:38:30,865 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:38:30,908 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:30,936 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:31,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:31,293 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:38:31,324 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:31,708 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:38:31,714 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-23 02:38:31,747 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-23 02:38:31,804 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-23 02:38:31,805 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 134 treesize of output 137 [2021-11-23 02:38:31,843 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-11-23 02:38:31,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 137 treesize of output 140 [2021-11-23 02:38:31,878 INFO L354 Elim1Store]: treesize reduction 19, result has 36.7 percent of original size [2021-11-23 02:38:31,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 143 [2021-11-23 02:38:31,963 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:38:31,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:38:31,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:38:32,244 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:38:32,743 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2021-11-23 02:38:34,538 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:34,585 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:34,995 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:35,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-11-23 02:38:48,666 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:38:48,855 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 40 [2021-11-23 02:38:48,889 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_memset with input of size 340 for LOIs [2021-11-23 02:38:50,152 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:38:50,195 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 10 [2021-11-23 02:38:50,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2021-11-23 02:38:50,348 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_irq_1 with input of size 248 for LOIs [2021-11-23 02:38:50,776 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_init_zalloc with input of size 225 for LOIs [2021-11-23 02:38:51,482 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:38:51,852 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:38:52,862 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:38:52,892 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:38:53,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:38:53,980 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:38:55,798 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2021-11-23 02:38:55,846 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-23 02:38:55,936 INFO L197 IcfgInterpreter]: Interpreting procedure #Ultimate.meminit with input of size 236 for LOIs [2021-11-23 02:38:56,255 INFO L197 IcfgInterpreter]: Interpreting procedure assume_abort_if_not with input of size 212 for LOIs [2021-11-23 02:38:56,377 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-23 02:39:04,247 WARN L227 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 225 DAG size of output: 224 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:39:21,238 WARN L227 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 238 DAG size of output: 233 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-23 02:40:43,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [277396645] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 02:40:43,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-23 02:40:43,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [39] imperfect sequences [8, 10, 10] total 56 [2021-11-23 02:40:43,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080419551] [2021-11-23 02:40:43,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 02:40:43,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-11-23 02:40:43,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 02:40:43,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-11-23 02:40:43,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=312, Invalid=2768, Unknown=0, NotChecked=0, Total=3080 [2021-11-23 02:40:43,077 INFO L87 Difference]: Start difference. First operand 15638 states and 21570 transitions. Second operand has 40 states, 27 states have (on average 2.2222222222222223) internal successors, (60), 26 states have internal predecessors, (60), 11 states have call successors, (22), 6 states have call predecessors, (22), 6 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2021-11-23 02:41:24,055 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:26,102 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:28,146 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:30,200 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:32,253 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 02:41:34,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []