./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--misc--sgi-xp--xpc.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_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/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_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/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_8788ad2b-8cc5-4626-89f6-5e380cce4402/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 34bfb407ab3285beb6e4618a31251a3cfac86b629af8c3915889881b8af28c9e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-aef121e [2021-11-23 03:55:27,459 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-23 03:55:27,464 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-23 03:55:27,526 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-23 03:55:27,527 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-23 03:55:27,532 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-23 03:55:27,536 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-23 03:55:27,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-23 03:55:27,545 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-23 03:55:27,552 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-23 03:55:27,554 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-23 03:55:27,556 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-23 03:55:27,557 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-23 03:55:27,561 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-23 03:55:27,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-23 03:55:27,572 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-23 03:55:27,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-23 03:55:27,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-23 03:55:27,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-23 03:55:27,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-23 03:55:27,583 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-23 03:55:27,585 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-23 03:55:27,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-23 03:55:27,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-23 03:55:27,593 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-23 03:55:27,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-23 03:55:27,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-23 03:55:27,596 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-23 03:55:27,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-23 03:55:27,599 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-23 03:55:27,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-23 03:55:27,601 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-23 03:55:27,603 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-23 03:55:27,604 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-23 03:55:27,606 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-23 03:55:27,606 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-23 03:55:27,607 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-23 03:55:27,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-23 03:55:27,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-23 03:55:27,610 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-23 03:55:27,611 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-23 03:55:27,612 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/config/svcomp-Reach-64bit-Taipan_Default.epf [2021-11-23 03:55:27,655 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-23 03:55:27,660 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-23 03:55:27,661 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-23 03:55:27,661 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-23 03:55:27,670 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-23 03:55:27,671 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-23 03:55:27,672 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-23 03:55:27,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-23 03:55:27,672 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-23 03:55:27,673 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-23 03:55:27,674 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-23 03:55:27,674 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-23 03:55:27,675 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-23 03:55:27,675 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-23 03:55:27,675 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-23 03:55:27,676 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-23 03:55:27,676 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-23 03:55:27,676 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-23 03:55:27,677 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-23 03:55:27,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-23 03:55:27,678 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-23 03:55:27,678 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-23 03:55:27,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-23 03:55:27,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-23 03:55:27,679 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-23 03:55:27,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-23 03:55:27,682 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-23 03:55:27,682 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-23 03:55:27,683 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-23 03:55:27,683 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:55:27,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-23 03:55:27,684 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-23 03:55:27,684 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-23 03:55:27,684 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-23 03:55:27,685 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-23 03:55:27,685 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-23 03:55:27,685 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-23 03:55:27,686 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-23 03:55:27,686 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_8788ad2b-8cc5-4626-89f6-5e380cce4402/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 34bfb407ab3285beb6e4618a31251a3cfac86b629af8c3915889881b8af28c9e [2021-11-23 03:55:28,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-23 03:55:28,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-23 03:55:28,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-23 03:55:28,114 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-23 03:55:28,115 INFO L275 PluginConnector]: CDTParser initialized [2021-11-23 03:55:28,117 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i [2021-11-23 03:55:28,204 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/data/d5f744665/e153f612499b4844aac8a22e515a84f2/FLAG4a65d9ceb [2021-11-23 03:55:29,404 INFO L306 CDTParser]: Found 1 translation units. [2021-11-23 03:55:29,406 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i [2021-11-23 03:55:29,456 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/data/d5f744665/e153f612499b4844aac8a22e515a84f2/FLAG4a65d9ceb [2021-11-23 03:55:29,683 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/data/d5f744665/e153f612499b4844aac8a22e515a84f2 [2021-11-23 03:55:29,685 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-23 03:55:29,687 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-23 03:55:29,699 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-23 03:55:29,700 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-23 03:55:29,704 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-23 03:55:29,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:55:29" (1/1) ... [2021-11-23 03:55:29,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3690d8f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:29, skipping insertion in model container [2021-11-23 03:55:29,709 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:55:29" (1/1) ... [2021-11-23 03:55:29,718 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-23 03:55:29,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-23 03:55:32,992 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_8788ad2b-8cc5-4626-89f6-5e380cce4402/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i[342209,342222] [2021-11-23 03:55:33,060 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:55:33,189 INFO L203 MainTranslator]: Completed pre-run [2021-11-23 03:55:33,773 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_8788ad2b-8cc5-4626-89f6-5e380cce4402/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i[342209,342222] [2021-11-23 03:55:33,790 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-23 03:55:33,981 INFO L208 MainTranslator]: Completed translation [2021-11-23 03:55:33,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33 WrapperNode [2021-11-23 03:55:33,982 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-23 03:55:33,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-23 03:55:33,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-23 03:55:33,983 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-23 03:55:33,992 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:34,158 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:34,468 INFO L137 Inliner]: procedures = 334, calls = 3836, calls flagged for inlining = 113, calls inlined = 106, statements flattened = 6839 [2021-11-23 03:55:34,469 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-23 03:55:34,470 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-23 03:55:34,471 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-23 03:55:34,471 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-23 03:55:34,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:34,481 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:34,566 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:34,567 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:35,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:35,076 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:35,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:35,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-23 03:55:35,271 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-23 03:55:35,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-23 03:55:35,271 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-23 03:55:35,273 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (1/1) ... [2021-11-23 03:55:35,282 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-23 03:55:35,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/z3 [2021-11-23 03:55:35,315 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-23 03:55:35,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8788ad2b-8cc5-4626-89f6-5e380cce4402/bin/utaipan-EQgc7hIp5V/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-23 03:55:35,367 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_msg_structures_uv [2021-11-23 03:55:35,367 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_msg_structures_uv [2021-11-23 03:55:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2021-11-23 03:55:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2021-11-23 03:55:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_heartbeat_init_uv [2021-11-23 03:55:35,368 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_heartbeat_init_uv [2021-11-23 03:55:35,368 INFO L130 BoogieDeclarations]: Found specification of procedure __cmpxchg_wrong_size [2021-11-23 03:55:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_allow_hb_uv [2021-11-23 03:55:35,369 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_allow_hb_uv [2021-11-23 03:55:35,369 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_partitions_uv [2021-11-23 03:55:35,369 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_partitions_uv [2021-11-23 03:55:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_kthread_waitmsgs [2021-11-23 03:55:35,370 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_kthread_waitmsgs [2021-11-23 03:55:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_opencomplete_uv [2021-11-23 03:55:35,370 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_opencomplete_uv [2021-11-23 03:55:35,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-11-23 03:55:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure wake_up_process [2021-11-23 03:55:35,371 INFO L138 BoogieDeclarations]: Found implementation of procedure wake_up_process [2021-11-23 03:55:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-11-23 03:55:35,371 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-11-23 03:55:35,371 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-11-23 03:55:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-11-23 03:55:35,372 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-11-23 03:55:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_msg_structures_uv [2021-11-23 03:55:35,372 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_msg_structures_uv [2021-11-23 03:55:35,372 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_rsvd_page [2021-11-23 03:55:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_rsvd_page [2021-11-23 03:55:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_partition_disengaged [2021-11-23 03:55:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_partition_disengaged [2021-11-23 03:55:35,373 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_wakeup_channel_mgr [2021-11-23 03:55:35,373 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_wakeup_channel_mgr [2021-11-23 03:55:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-11-23 03:55:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-11-23 03:55:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2021-11-23 03:55:35,374 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2021-11-23 03:55:35,374 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2021-11-23 03:55:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2021-11-23 03:55:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_sub_return [2021-11-23 03:55:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_sub_return [2021-11-23 03:55:35,375 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-23 03:55:35,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-23 03:55:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_kmalloc_cacheline_aligned [2021-11-23 03:55:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_kmalloc_cacheline_aligned [2021-11-23 03:55:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_partitions_uv [2021-11-23 03:55:35,376 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_partitions_uv [2021-11-23 03:55:35,376 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_offline_heartbeat_uv [2021-11-23 03:55:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_offline_heartbeat_uv [2021-11-23 03:55:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_release_gru_mq_irq_uv [2021-11-23 03:55:35,377 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_release_gru_mq_irq_uv [2021-11-23 03:55:35,377 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~TO~int [2021-11-23 03:55:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~TO~int [2021-11-23 03:55:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_size_call_parameter [2021-11-23 03:55:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_notify_sender_uv [2021-11-23 03:55:35,378 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_notify_sender_uv [2021-11-23 03:55:35,378 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_die_deactivate [2021-11-23 03:55:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_die_deactivate [2021-11-23 03:55:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_connect [2021-11-23 03:55:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_connect [2021-11-23 03:55:35,379 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2021-11-23 03:55:35,379 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2021-11-23 03:55:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure __might_sleep [2021-11-23 03:55:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_sleep [2021-11-23 03:55:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_die_notifier [2021-11-23 03:55:35,380 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_die_notifier [2021-11-23 03:55:35,380 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_check_remote_hb [2021-11-23 03:55:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_check_remote_hb [2021-11-23 03:55:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-11-23 03:55:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-11-23 03:55:35,381 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-11-23 03:55:35,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-11-23 03:55:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_init_fifo_uv [2021-11-23 03:55:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_init_fifo_uv [2021-11-23 03:55:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_msgqueue_ref [2021-11-23 03:55:35,382 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_msgqueue_ref [2021-11-23 03:55:35,382 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_received_payload_uv [2021-11-23 03:55:35,383 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_received_payload_uv [2021-11-23 03:55:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2021-11-23 03:55:35,383 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2021-11-23 03:55:35,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-23 03:55:35,383 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-23 03:55:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_kthread_start [2021-11-23 03:55:35,384 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_kthread_start [2021-11-23 03:55:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-11-23 03:55:35,384 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-11-23 03:55:35,384 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_part_ref [2021-11-23 03:55:35,384 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_part_ref [2021-11-23 03:55:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_create_kthreads [2021-11-23 03:55:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_create_kthreads [2021-11-23 03:55:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure msleep_interruptible [2021-11-23 03:55:35,385 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep_interruptible [2021-11-23 03:55:35,385 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_local_activate_IRQ_uv [2021-11-23 03:55:35,386 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_local_activate_IRQ_uv [2021-11-23 03:55:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_exit_uv [2021-11-23 03:55:35,386 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_exit_uv [2021-11-23 03:55:35,386 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-11-23 03:55:35,386 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-11-23 03:55:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_put_fifo_entry_uv [2021-11-23 03:55:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_put_fifo_entry_uv [2021-11-23 03:55:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure uv_blade_to_pnode [2021-11-23 03:55:35,387 INFO L138 BoogieDeclarations]: Found implementation of procedure uv_blade_to_pnode [2021-11-23 03:55:35,387 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_activate_IRQ_rcvd_uv [2021-11-23 03:55:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_activate_IRQ_rcvd_uv [2021-11-23 03:55:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_activate_IRQ_uv [2021-11-23 03:55:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_activate_IRQ_uv [2021-11-23 03:55:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_payload_uv [2021-11-23 03:55:35,388 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_payload_uv [2021-11-23 03:55:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_free_msg_slot_uv [2021-11-23 03:55:35,389 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_free_msg_slot_uv [2021-11-23 03:55:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-23 03:55:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2021-11-23 03:55:35,389 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2021-11-23 03:55:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_indicate_partition_engaged_uv [2021-11-23 03:55:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_indicate_partition_engaged_uv [2021-11-23 03:55:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_openclose_chctl_flags [2021-11-23 03:55:35,390 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_openclose_chctl_flags [2021-11-23 03:55:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-23 03:55:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_msg_chctl_flags_uv [2021-11-23 03:55:35,391 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_msg_chctl_flags_uv [2021-11-23 03:55:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2021-11-23 03:55:35,391 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2021-11-23 03:55:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2021-11-23 03:55:35,392 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_msgqueue_deref [2021-11-23 03:55:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_msgqueue_deref [2021-11-23 03:55:35,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2021-11-23 03:55:35,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2021-11-23 03:55:35,392 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2021-11-23 03:55:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2021-11-23 03:55:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_closereply_uv [2021-11-23 03:55:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_closereply_uv [2021-11-23 03:55:35,393 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-11-23 03:55:35,393 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-11-23 03:55:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_connect_channel [2021-11-23 03:55:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_connect_channel [2021-11-23 03:55:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_cache_remote_gru_mq_desc_uv [2021-11-23 03:55:35,394 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_cache_remote_gru_mq_desc_uv [2021-11-23 03:55:35,394 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_ch_structures_uv [2021-11-23 03:55:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_ch_structures_uv [2021-11-23 03:55:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~int [2021-11-23 03:55:35,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~int [2021-11-23 03:55:35,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-23 03:55:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_request_partition_activation_uv [2021-11-23 03:55:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_request_partition_activation_uv [2021-11-23 03:55:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_activating [2021-11-23 03:55:35,396 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_activating [2021-11-23 03:55:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-23 03:55:35,396 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_disconnect_callout [2021-11-23 03:55:35,397 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_disconnect_callout [2021-11-23 03:55:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_deactivate_partition [2021-11-23 03:55:35,397 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_deactivate_partition [2021-11-23 03:55:35,397 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_indicate_partition_disengaged_uv [2021-11-23 03:55:35,397 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_indicate_partition_disengaged_uv [2021-11-23 03:55:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_disconnect_channel [2021-11-23 03:55:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_disconnect_channel [2021-11-23 03:55:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_bit [2021-11-23 03:55:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_bit [2021-11-23 03:55:35,398 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~int [2021-11-23 03:55:35,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~int [2021-11-23 03:55:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-11-23 03:55:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-11-23 03:55:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_channel_mgr [2021-11-23 03:55:35,399 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_channel_mgr [2021-11-23 03:55:35,399 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_save_remote_msgqueue_pa_uv [2021-11-23 03:55:35,400 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_save_remote_msgqueue_pa_uv [2021-11-23 03:55:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_openrequest_uv [2021-11-23 03:55:35,400 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_openrequest_uv [2021-11-23 03:55:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_heartbeat_exit_uv [2021-11-23 03:55:35,400 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_heartbeat_exit_uv [2021-11-23 03:55:35,400 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2021-11-23 03:55:35,401 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2021-11-23 03:55:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_ch_structures [2021-11-23 03:55:35,401 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_ch_structures [2021-11-23 03:55:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2021-11-23 03:55:35,401 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2021-11-23 03:55:35,401 INFO L130 BoogieDeclarations]: Found specification of procedure free_pages [2021-11-23 03:55:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure free_pages [2021-11-23 03:55:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_any_partition_engaged_uv [2021-11-23 03:55:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_any_partition_engaged_uv [2021-11-23 03:55:35,402 INFO L130 BoogieDeclarations]: Found specification of procedure schedule [2021-11-23 03:55:35,402 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule [2021-11-23 03:55:35,403 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2021-11-23 03:55:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2021-11-23 03:55:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2021-11-23 03:55:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_rsvd_page_pa [2021-11-23 03:55:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_rsvd_page_pa [2021-11-23 03:55:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_activate_partition [2021-11-23 03:55:35,456 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_activate_partition [2021-11-23 03:55:35,456 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_activate_IRQ_part_uv [2021-11-23 03:55:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_activate_IRQ_part_uv [2021-11-23 03:55:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure uv_cpu_to_blade_id [2021-11-23 03:55:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure uv_cpu_to_blade_id [2021-11-23 03:55:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_initiate_discovery [2021-11-23 03:55:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_initiate_discovery [2021-11-23 03:55:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-11-23 03:55:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-11-23 03:55:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_request_partition_reactivation_uv [2021-11-23 03:55:35,457 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_request_partition_reactivation_uv [2021-11-23 03:55:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2021-11-23 03:55:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_activate_kthreads [2021-11-23 03:55:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_activate_kthreads [2021-11-23 03:55:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-23 03:55:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_partition_engaged_uv [2021-11-23 03:55:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_partition_engaged_uv [2021-11-23 03:55:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-11-23 03:55:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-11-23 03:55:35,458 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_gru_msg [2021-11-23 03:55:35,458 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_gru_msg [2021-11-23 03:55:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-11-23 03:55:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-11-23 03:55:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_create_gru_mq_uv [2021-11-23 03:55:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_create_gru_mq_uv [2021-11-23 03:55:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_reboot_notifier [2021-11-23 03:55:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_reboot_notifier [2021-11-23 03:55:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_part_deref [2021-11-23 03:55:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_part_deref [2021-11-23 03:55:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_closerequest_uv [2021-11-23 03:55:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_closerequest_uv [2021-11-23 03:55:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_disallow_all_hbs_uv [2021-11-23 03:55:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_disallow_all_hbs_uv [2021-11-23 03:55:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_timeout_partition_disengage [2021-11-23 03:55:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_timeout_partition_disengage [2021-11-23 03:55:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_of_node [2021-11-23 03:55:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_of_node [2021-11-23 03:55:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_init_mq_node [2021-11-23 03:55:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_init_mq_node [2021-11-23 03:55:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_destroy_gru_mq_uv [2021-11-23 03:55:35,460 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_destroy_gru_mq_uv [2021-11-23 03:55:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_discovery [2021-11-23 03:55:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_discovery [2021-11-23 03:55:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_partition_rsvd_page_pa_uv [2021-11-23 03:55:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_partition_rsvd_page_pa_uv [2021-11-23 03:55:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2021-11-23 03:55:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2021-11-23 03:55:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-11-23 03:55:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-11-23 03:55:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_activate_IRQ_ch_uv [2021-11-23 03:55:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_activate_IRQ_ch_uv [2021-11-23 03:55:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_increment_heartbeat_uv [2021-11-23 03:55:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_increment_heartbeat_uv [2021-11-23 03:55:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure put_online_cpus [2021-11-23 03:55:35,504 INFO L138 BoogieDeclarations]: Found implementation of procedure put_online_cpus [2021-11-23 03:55:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-23 03:55:35,504 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_sent_chctl_flags [2021-11-23 03:55:35,505 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_sent_chctl_flags [2021-11-23 03:55:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_remote_heartbeat_uv [2021-11-23 03:55:35,505 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_remote_heartbeat_uv [2021-11-23 03:55:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-11-23 03:55:35,505 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-11-23 03:55:35,505 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_teardown_partitions [2021-11-23 03:55:35,505 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_teardown_partitions [2021-11-23 03:55:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_process_disconnect [2021-11-23 03:55:35,506 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_process_disconnect [2021-11-23 03:55:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_do_exit [2021-11-23 03:55:35,506 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_do_exit [2021-11-23 03:55:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-11-23 03:55:35,506 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-11-23 03:55:35,506 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_online_heartbeat_uv [2021-11-23 03:55:35,506 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_online_heartbeat_uv [2021-11-23 03:55:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_fifo_entry_uv [2021-11-23 03:55:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_fifo_entry_uv [2021-11-23 03:55:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_disallow_hb_uv [2021-11-23 03:55:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_disallow_hb_uv [2021-11-23 03:55:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-23 03:55:35,507 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_send_chctl_openreply_uv [2021-11-23 03:55:35,507 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_send_chctl_openreply_uv [2021-11-23 03:55:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2021-11-23 03:55:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2021-11-23 03:55:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_hb_checker [2021-11-23 03:55:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_hb_checker [2021-11-23 03:55:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~TO~VOID [2021-11-23 03:55:35,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~TO~VOID [2021-11-23 03:55:35,508 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-11-23 03:55:35,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-11-23 03:55:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure complete [2021-11-23 03:55:35,509 INFO L138 BoogieDeclarations]: Found implementation of procedure complete [2021-11-23 03:55:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_ch_structures_uv [2021-11-23 03:55:35,509 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_ch_structures_uv [2021-11-23 03:55:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_setup_rsvd_page_uv [2021-11-23 03:55:35,509 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_setup_rsvd_page_uv [2021-11-23 03:55:35,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-23 03:55:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure cpumask_next [2021-11-23 03:55:35,510 INFO L138 BoogieDeclarations]: Found implementation of procedure cpumask_next [2021-11-23 03:55:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2021-11-23 03:55:35,510 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2021-11-23 03:55:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_request_partition_deactivation_uv [2021-11-23 03:55:35,510 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_request_partition_deactivation_uv [2021-11-23 03:55:35,510 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_chctl_all_flags_uv [2021-11-23 03:55:35,510 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_chctl_all_flags_uv [2021-11-23 03:55:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_gru_mq_watchlist_free_uv [2021-11-23 03:55:35,511 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_gru_mq_watchlist_free_uv [2021-11-23 03:55:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_partition_going_down [2021-11-23 03:55:35,511 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_partition_going_down [2021-11-23 03:55:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure wait_for_completion [2021-11-23 03:55:35,511 INFO L138 BoogieDeclarations]: Found implementation of procedure wait_for_completion [2021-11-23 03:55:35,511 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-23 03:55:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2021-11-23 03:55:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2021-11-23 03:55:35,517 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2021-11-23 03:55:35,517 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:55:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-11-23 03:55:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:55:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2021-11-23 03:55:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2021-11-23 03:55:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2021-11-23 03:55:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure __wake_up [2021-11-23 03:55:35,518 INFO L138 BoogieDeclarations]: Found implementation of procedure __wake_up [2021-11-23 03:55:35,518 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_sysctl_table [2021-11-23 03:55:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_sysctl_table [2021-11-23 03:55:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure uv_gpa [2021-11-23 03:55:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure uv_gpa [2021-11-23 03:55:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure PTR_ERR [2021-11-23 03:55:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure PTR_ERR [2021-11-23 03:55:35,519 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~X~int~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:55:35,519 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~X~int~X~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:55:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_deliverable_payload_uv [2021-11-23 03:55:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_deliverable_payload_uv [2021-11-23 03:55:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_notify_senders_of_disconnect_uv [2021-11-23 03:55:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_notify_senders_of_disconnect_uv [2021-11-23 03:55:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2021-11-23 03:55:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2021-11-23 03:55:35,520 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_make_first_contact_uv [2021-11-23 03:55:35,520 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_make_first_contact_uv [2021-11-23 03:55:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_n_of_deliverable_payloads_uv [2021-11-23 03:55:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_n_of_deliverable_payloads_uv [2021-11-23 03:55:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_get_remote_rp [2021-11-23 03:55:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_get_remote_rp [2021-11-23 03:55:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_hb_beater [2021-11-23 03:55:35,521 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_hb_beater [2021-11-23 03:55:35,521 INFO L130 BoogieDeclarations]: Found specification of procedure is_uv_system [2021-11-23 03:55:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure is_uv_system [2021-11-23 03:55:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2021-11-23 03:55:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2021-11-23 03:55:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2021-11-23 03:55:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2021-11-23 03:55:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2021-11-23 03:55:35,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2021-11-23 03:55:35,522 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-23 03:55:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:55:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~VOID [2021-11-23 03:55:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2021-11-23 03:55:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2021-11-23 03:55:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-23 03:55:35,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-23 03:55:35,523 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_assume_partition_disengaged_uv [2021-11-23 03:55:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_assume_partition_disengaged_uv [2021-11-23 03:55:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2021-11-23 03:55:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2021-11-23 03:55:35,524 INFO L130 BoogieDeclarations]: Found specification of procedure xpc_cancel_partition_deactivation_request_uv [2021-11-23 03:55:35,524 INFO L138 BoogieDeclarations]: Found implementation of procedure xpc_cancel_partition_deactivation_request_uv [2021-11-23 03:55:36,586 INFO L236 CfgBuilder]: Building ICFG [2021-11-23 03:55:36,591 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-23 03:55:37,210 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-11-23 03:56:01,121 INFO L277 CfgBuilder]: Performing block encoding [2021-11-23 03:56:03,596 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-23 03:56:03,596 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-23 03:56:03,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:03 BoogieIcfgContainer [2021-11-23 03:56:03,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-23 03:56:03,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-23 03:56:03,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-23 03:56:03,613 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-23 03:56:03,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:55:29" (1/3) ... [2021-11-23 03:56:03,614 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9bcdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:03, skipping insertion in model container [2021-11-23 03:56:03,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:55:33" (2/3) ... [2021-11-23 03:56:03,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9bcdb7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:56:03, skipping insertion in model container [2021-11-23 03:56:03,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:56:03" (3/3) ... [2021-11-23 03:56:03,619 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--misc--sgi-xp--xpc.ko-entry_point.cil.out.i [2021-11-23 03:56:03,626 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-23 03:56:03,626 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-23 03:56:03,717 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-23 03:56:03,730 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-23 03:56:03,730 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-23 03:56:03,826 INFO L276 IsEmpty]: Start isEmpty. Operand has 2297 states, 1388 states have (on average 1.361671469740634) internal successors, (1890), 1497 states have internal predecessors, (1890), 744 states have call successors, (744), 164 states have call predecessors, (744), 163 states have return successors, (739), 703 states have call predecessors, (739), 739 states have call successors, (739) [2021-11-23 03:56:03,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-23 03:56:03,853 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:03,855 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-23 03:56:03,857 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:03,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:03,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1641072697, now seen corresponding path program 1 times [2021-11-23 03:56:03,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:03,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647110260] [2021-11-23 03:56:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:03,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:04,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:04,932 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-23 03:56:04,933 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:04,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647110260] [2021-11-23 03:56:04,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647110260] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:04,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:04,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:56:04,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384690424] [2021-11-23 03:56:04,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:04,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:56:04,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:04,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:56:04,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:04,998 INFO L87 Difference]: Start difference. First operand has 2297 states, 1388 states have (on average 1.361671469740634) internal successors, (1890), 1497 states have internal predecessors, (1890), 744 states have call successors, (744), 164 states have call predecessors, (744), 163 states have return successors, (739), 703 states have call predecessors, (739), 739 states have call successors, (739) Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-23 03:56:07,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:09,743 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 03:56:11,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:11,509 INFO L93 Difference]: Finished difference Result 4986 states and 7628 transitions. [2021-11-23 03:56:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:56:11,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 86 [2021-11-23 03:56:11,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:11,579 INFO L225 Difference]: With dead ends: 4986 [2021-11-23 03:56:11,579 INFO L226 Difference]: Without dead ends: 2677 [2021-11-23 03:56:11,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:11,611 INFO L933 BasicCegarLoop]: 3326 mSDtfsCounter, 442 mSDsluCounter, 3379 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 557 SdHoareTripleChecker+Valid, 6410 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:11,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [557 Valid, 6410 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 612 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2021-11-23 03:56:11,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2677 states. [2021-11-23 03:56:11,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2677 to 2280. [2021-11-23 03:56:11,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 1378 states have (on average 1.353410740203193) internal successors, (1865), 1481 states have internal predecessors, (1865), 739 states have call successors, (739), 163 states have call predecessors, (739), 162 states have return successors, (737), 701 states have call predecessors, (737), 737 states have call successors, (737) [2021-11-23 03:56:11,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 3341 transitions. [2021-11-23 03:56:11,940 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 3341 transitions. Word has length 86 [2021-11-23 03:56:11,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:11,942 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 3341 transitions. [2021-11-23 03:56:11,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2021-11-23 03:56:11,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 3341 transitions. [2021-11-23 03:56:11,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-23 03:56:11,956 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:11,956 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-11-23 03:56:11,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-23 03:56:11,957 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:11,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:11,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1622352933, now seen corresponding path program 1 times [2021-11-23 03:56:11,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:11,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1964943944] [2021-11-23 03:56:11,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:11,963 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:12,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:12,624 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2021-11-23 03:56:12,625 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:12,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1964943944] [2021-11-23 03:56:12,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1964943944] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:12,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:12,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:56:12,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712623501] [2021-11-23 03:56:12,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:12,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:56:12,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:12,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:56:12,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:12,635 INFO L87 Difference]: Start difference. First operand 2280 states and 3341 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:56:14,737 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:17,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:19,844 WARN L534 Checker$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 03:56:21,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:21,188 INFO L93 Difference]: Finished difference Result 3981 states and 5978 transitions. [2021-11-23 03:56:21,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:56:21,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 89 [2021-11-23 03:56:21,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:21,238 INFO L225 Difference]: With dead ends: 3981 [2021-11-23 03:56:21,238 INFO L226 Difference]: Without dead ends: 3978 [2021-11-23 03:56:21,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:21,244 INFO L933 BasicCegarLoop]: 3910 mSDtfsCounter, 3283 mSDsluCounter, 2652 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 1 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3283 SdHoareTripleChecker+Valid, 6325 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:21,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3283 Valid, 6325 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 560 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2021-11-23 03:56:21,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3978 states. [2021-11-23 03:56:21,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3978 to 3899. [2021-11-23 03:56:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3899 states, 2395 states have (on average 1.3657620041753653) internal successors, (3271), 2564 states have internal predecessors, (3271), 1206 states have call successors, (1206), 299 states have call predecessors, (1206), 297 states have return successors, (1361), 1136 states have call predecessors, (1361), 1203 states have call successors, (1361) [2021-11-23 03:56:21,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3899 states to 3899 states and 5838 transitions. [2021-11-23 03:56:21,498 INFO L78 Accepts]: Start accepts. Automaton has 3899 states and 5838 transitions. Word has length 89 [2021-11-23 03:56:21,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:21,501 INFO L470 AbstractCegarLoop]: Abstraction has 3899 states and 5838 transitions. [2021-11-23 03:56:21,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 3 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-23 03:56:21,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3899 states and 5838 transitions. [2021-11-23 03:56:21,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-11-23 03:56:21,511 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:21,512 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:56:21,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-23 03:56:21,512 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:21,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:21,513 INFO L85 PathProgramCache]: Analyzing trace with hash -520486563, now seen corresponding path program 1 times [2021-11-23 03:56:21,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:21,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041181131] [2021-11-23 03:56:21,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:21,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:21,934 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 03:56:21,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:21,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041181131] [2021-11-23 03:56:21,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041181131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:21,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:21,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:56:21,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630200896] [2021-11-23 03:56:21,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:21,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:56:21,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:21,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:56:21,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:56:21,941 INFO L87 Difference]: Start difference. First operand 3899 states and 5838 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:56:24,036 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:29,788 WARN L534 Checker$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 03:56:34,477 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 03:56:38,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:38,953 INFO L93 Difference]: Finished difference Result 15314 states and 23127 transitions. [2021-11-23 03:56:38,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:56:38,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 130 [2021-11-23 03:56:38,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:39,110 INFO L225 Difference]: With dead ends: 15314 [2021-11-23 03:56:39,111 INFO L226 Difference]: Without dead ends: 11428 [2021-11-23 03:56:39,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:56:39,150 INFO L933 BasicCegarLoop]: 5395 mSDtfsCounter, 8277 mSDsluCounter, 7679 mSDsCounter, 0 mSdLazyCounter, 2697 mSolverCounterSat, 1428 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8277 SdHoareTripleChecker+Valid, 12269 SdHoareTripleChecker+Invalid, 4128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1428 IncrementalHoareTripleChecker+Valid, 2697 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:39,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8277 Valid, 12269 Invalid, 4128 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1428 Valid, 2697 Invalid, 3 Unknown, 0 Unchecked, 16.1s Time] [2021-11-23 03:56:39,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11428 states. [2021-11-23 03:56:39,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11428 to 11402. [2021-11-23 03:56:39,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11402 states, 7014 states have (on average 1.3676931850584546) internal successors, (9593), 7519 states have internal predecessors, (9593), 3517 states have call successors, (3517), 878 states have call predecessors, (3517), 870 states have return successors, (4160), 3297 states have call predecessors, (4160), 3510 states have call successors, (4160) [2021-11-23 03:56:40,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11402 states to 11402 states and 17270 transitions. [2021-11-23 03:56:40,100 INFO L78 Accepts]: Start accepts. Automaton has 11402 states and 17270 transitions. Word has length 130 [2021-11-23 03:56:40,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:40,102 INFO L470 AbstractCegarLoop]: Abstraction has 11402 states and 17270 transitions. [2021-11-23 03:56:40,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:56:40,104 INFO L276 IsEmpty]: Start isEmpty. Operand 11402 states and 17270 transitions. [2021-11-23 03:56:40,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-23 03:56:40,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:40,121 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:56:40,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-23 03:56:40,121 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:40,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:40,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1642519334, now seen corresponding path program 1 times [2021-11-23 03:56:40,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:40,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683305606] [2021-11-23 03:56:40,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:40,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:40,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:40,528 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 03:56:40,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:40,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683305606] [2021-11-23 03:56:40,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683305606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:40,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:40,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-23 03:56:40,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338691874] [2021-11-23 03:56:40,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:40,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-23 03:56:40,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:40,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-23 03:56:40,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:56:40,533 INFO L87 Difference]: Start difference. First operand 11402 states and 17270 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:56:42,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:47,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:47,239 INFO L93 Difference]: Finished difference Result 22762 states and 34484 transitions. [2021-11-23 03:56:47,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-23 03:56:47,240 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 133 [2021-11-23 03:56:47,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:47,376 INFO L225 Difference]: With dead ends: 22762 [2021-11-23 03:56:47,377 INFO L226 Difference]: Without dead ends: 11390 [2021-11-23 03:56:47,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:56:47,462 INFO L933 BasicCegarLoop]: 3047 mSDtfsCounter, 5198 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 327 mSolverCounterSat, 1478 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5198 SdHoareTripleChecker+Valid, 3056 SdHoareTripleChecker+Invalid, 1806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1478 IncrementalHoareTripleChecker+Valid, 327 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:47,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5198 Valid, 3056 Invalid, 1806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1478 Valid, 327 Invalid, 1 Unknown, 0 Unchecked, 5.9s Time] [2021-11-23 03:56:47,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11390 states. [2021-11-23 03:56:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11390 to 11390. [2021-11-23 03:56:48,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11390 states, 7008 states have (on average 1.3662956621004567) internal successors, (9575), 7513 states have internal predecessors, (9575), 3511 states have call successors, (3511), 878 states have call predecessors, (3511), 870 states have return successors, (4151), 3291 states have call predecessors, (4151), 3504 states have call successors, (4151) [2021-11-23 03:56:48,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11390 states to 11390 states and 17237 transitions. [2021-11-23 03:56:48,337 INFO L78 Accepts]: Start accepts. Automaton has 11390 states and 17237 transitions. Word has length 133 [2021-11-23 03:56:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:48,338 INFO L470 AbstractCegarLoop]: Abstraction has 11390 states and 17237 transitions. [2021-11-23 03:56:48,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (24), 2 states have call predecessors, (24), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-11-23 03:56:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 11390 states and 17237 transitions. [2021-11-23 03:56:48,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-11-23 03:56:48,353 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:48,353 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:56:48,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-23 03:56:48,354 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:48,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:48,354 INFO L85 PathProgramCache]: Analyzing trace with hash 483199911, now seen corresponding path program 1 times [2021-11-23 03:56:48,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:48,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783332671] [2021-11-23 03:56:48,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:48,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:48,692 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-23 03:56:48,692 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:48,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783332671] [2021-11-23 03:56:48,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783332671] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:48,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:48,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:56:48,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404805223] [2021-11-23 03:56:48,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:48,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:56:48,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:48,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:56:48,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:48,696 INFO L87 Difference]: Start difference. First operand 11390 states and 17237 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:56:50,792 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:56:53,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:56:53,124 INFO L93 Difference]: Finished difference Result 32849 states and 49676 transitions. [2021-11-23 03:56:53,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:56:53,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 162 [2021-11-23 03:56:53,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:56:53,290 INFO L225 Difference]: With dead ends: 32849 [2021-11-23 03:56:53,290 INFO L226 Difference]: Without dead ends: 21489 [2021-11-23 03:56:53,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:56:53,369 INFO L933 BasicCegarLoop]: 3695 mSDtfsCounter, 3296 mSDsluCounter, 3019 mSDsCounter, 0 mSdLazyCounter, 570 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3296 SdHoareTripleChecker+Valid, 6454 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 570 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2021-11-23 03:56:53,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3296 Valid, 6454 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 570 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2021-11-23 03:56:53,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21489 states. [2021-11-23 03:56:55,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21489 to 21486. [2021-11-23 03:56:55,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21486 states, 13253 states have (on average 1.369652154229231) internal successors, (18152), 14220 states have internal predecessors, (18152), 6553 states have call successors, (6553), 1694 states have call predecessors, (6553), 1679 states have return successors, (7749), 6121 states have call predecessors, (7749), 6546 states have call successors, (7749) [2021-11-23 03:56:55,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21486 states to 21486 states and 32454 transitions. [2021-11-23 03:56:55,244 INFO L78 Accepts]: Start accepts. Automaton has 21486 states and 32454 transitions. Word has length 162 [2021-11-23 03:56:55,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:56:55,245 INFO L470 AbstractCegarLoop]: Abstraction has 21486 states and 32454 transitions. [2021-11-23 03:56:55,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:56:55,246 INFO L276 IsEmpty]: Start isEmpty. Operand 21486 states and 32454 transitions. [2021-11-23 03:56:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-23 03:56:55,263 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:56:55,263 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:56:55,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-23 03:56:55,264 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:56:55,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:56:55,265 INFO L85 PathProgramCache]: Analyzing trace with hash 95639842, now seen corresponding path program 1 times [2021-11-23 03:56:55,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:56:55,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283402892] [2021-11-23 03:56:55,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:56:55,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:56:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:56:55,694 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-23 03:56:55,694 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:56:55,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283402892] [2021-11-23 03:56:55,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283402892] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:56:55,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:56:55,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:56:55,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068677746] [2021-11-23 03:56:55,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:56:55,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:56:55,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:56:55,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:56:55,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:56:55,698 INFO L87 Difference]: Start difference. First operand 21486 states and 32454 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:56:57,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:01,199 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 03:57:03,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:03,754 INFO L93 Difference]: Finished difference Result 56832 states and 88924 transitions. [2021-11-23 03:57:03,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:57:03,755 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 158 [2021-11-23 03:57:03,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:03,994 INFO L225 Difference]: With dead ends: 56832 [2021-11-23 03:57:03,995 INFO L226 Difference]: Without dead ends: 35376 [2021-11-23 03:57:04,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:57:04,105 INFO L933 BasicCegarLoop]: 4464 mSDtfsCounter, 1327 mSDsluCounter, 8206 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 232 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 12061 SdHoareTripleChecker+Invalid, 1187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:04,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1564 Valid, 12061 Invalid, 1187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 953 Invalid, 2 Unknown, 0 Unchecked, 6.5s Time] [2021-11-23 03:57:04,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35376 states. [2021-11-23 03:57:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35376 to 21498. [2021-11-23 03:57:06,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21498 states, 13265 states have (on average 1.369317753486619) internal successors, (18164), 14232 states have internal predecessors, (18164), 6553 states have call successors, (6553), 1694 states have call predecessors, (6553), 1679 states have return successors, (7749), 6121 states have call predecessors, (7749), 6546 states have call successors, (7749) [2021-11-23 03:57:06,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21498 states to 21498 states and 32466 transitions. [2021-11-23 03:57:06,314 INFO L78 Accepts]: Start accepts. Automaton has 21498 states and 32466 transitions. Word has length 158 [2021-11-23 03:57:06,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:06,315 INFO L470 AbstractCegarLoop]: Abstraction has 21498 states and 32466 transitions. [2021-11-23 03:57:06,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-11-23 03:57:06,316 INFO L276 IsEmpty]: Start isEmpty. Operand 21498 states and 32466 transitions. [2021-11-23 03:57:06,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-23 03:57:06,343 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:06,344 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:57:06,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-23 03:57:06,344 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:57:06,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:06,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1041557850, now seen corresponding path program 1 times [2021-11-23 03:57:06,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:06,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90713527] [2021-11-23 03:57:06,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:06,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:06,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 71 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2021-11-23 03:57:06,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:06,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90713527] [2021-11-23 03:57:06,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90713527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:06,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:06,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:57:06,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906874845] [2021-11-23 03:57:06,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:06,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:57:06,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:06,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:57:06,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:57:06,677 INFO L87 Difference]: Start difference. First operand 21498 states and 32466 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:57:08,774 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:12,225 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 03:57:14,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:14,232 INFO L93 Difference]: Finished difference Result 64320 states and 97142 transitions. [2021-11-23 03:57:14,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:57:14,233 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 165 [2021-11-23 03:57:14,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:14,807 INFO L225 Difference]: With dead ends: 64320 [2021-11-23 03:57:14,807 INFO L226 Difference]: Without dead ends: 42828 [2021-11-23 03:57:14,911 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:57:14,912 INFO L933 BasicCegarLoop]: 3810 mSDtfsCounter, 3289 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3289 SdHoareTripleChecker+Valid, 6843 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:14,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3289 Valid, 6843 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 606 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2021-11-23 03:57:14,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42828 states. [2021-11-23 03:57:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42828 to 42825. [2021-11-23 03:57:17,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42825 states, 26417 states have (on average 1.3692697883938374) internal successors, (36172), 28345 states have internal predecessors, (36172), 13066 states have call successors, (13066), 3382 states have call predecessors, (13066), 3341 states have return successors, (15411), 12191 states have call predecessors, (15411), 13041 states have call successors, (15411) [2021-11-23 03:57:18,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42825 states to 42825 states and 64649 transitions. [2021-11-23 03:57:18,121 INFO L78 Accepts]: Start accepts. Automaton has 42825 states and 64649 transitions. Word has length 165 [2021-11-23 03:57:18,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:18,122 INFO L470 AbstractCegarLoop]: Abstraction has 42825 states and 64649 transitions. [2021-11-23 03:57:18,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (32), 2 states have call predecessors, (32), 1 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2021-11-23 03:57:18,122 INFO L276 IsEmpty]: Start isEmpty. Operand 42825 states and 64649 transitions. [2021-11-23 03:57:18,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-23 03:57:18,147 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:18,148 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:57:18,148 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-23 03:57:18,148 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:57:18,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:18,150 INFO L85 PathProgramCache]: Analyzing trace with hash -433285440, now seen corresponding path program 1 times [2021-11-23 03:57:18,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:18,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296881209] [2021-11-23 03:57:18,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:18,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:18,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:18,534 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-23 03:57:18,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:18,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296881209] [2021-11-23 03:57:18,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296881209] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:18,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:18,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:57:18,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927011048] [2021-11-23 03:57:18,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:18,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:57:18,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:18,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:57:18,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:57:18,538 INFO L87 Difference]: Start difference. First operand 42825 states and 64649 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:57:20,652 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:23,666 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 03:57:26,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:26,239 INFO L93 Difference]: Finished difference Result 85716 states and 129755 transitions. [2021-11-23 03:57:26,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:57:26,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 170 [2021-11-23 03:57:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:26,521 INFO L225 Difference]: With dead ends: 85716 [2021-11-23 03:57:26,521 INFO L226 Difference]: Without dead ends: 42921 [2021-11-23 03:57:26,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:57:26,718 INFO L933 BasicCegarLoop]: 3037 mSDtfsCounter, 3 mSDsluCounter, 3329 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6072 SdHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:26,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 6072 Invalid, 595 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 593 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2021-11-23 03:57:26,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42921 states. [2021-11-23 03:57:29,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42921 to 42849. [2021-11-23 03:57:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42849 states, 26441 states have (on average 1.3689346091297605) internal successors, (36196), 28369 states have internal predecessors, (36196), 13066 states have call successors, (13066), 3382 states have call predecessors, (13066), 3341 states have return successors, (15411), 12191 states have call predecessors, (15411), 13041 states have call successors, (15411) [2021-11-23 03:57:29,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42849 states to 42849 states and 64673 transitions. [2021-11-23 03:57:29,830 INFO L78 Accepts]: Start accepts. Automaton has 42849 states and 64673 transitions. Word has length 170 [2021-11-23 03:57:29,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:29,831 INFO L470 AbstractCegarLoop]: Abstraction has 42849 states and 64673 transitions. [2021-11-23 03:57:29,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:57:29,831 INFO L276 IsEmpty]: Start isEmpty. Operand 42849 states and 64673 transitions. [2021-11-23 03:57:29,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-11-23 03:57:29,858 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:29,858 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:57:29,858 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-23 03:57:29,859 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:57:29,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:29,859 INFO L85 PathProgramCache]: Analyzing trace with hash 475259990, now seen corresponding path program 1 times [2021-11-23 03:57:29,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:29,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210710152] [2021-11-23 03:57:29,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:29,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:30,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:30,317 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-23 03:57:30,318 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:30,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210710152] [2021-11-23 03:57:30,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210710152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:30,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:30,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-23 03:57:30,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701569646] [2021-11-23 03:57:30,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:30,319 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-23 03:57:30,319 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:30,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-23 03:57:30,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-23 03:57:30,321 INFO L87 Difference]: Start difference. First operand 42849 states and 64673 transitions. Second operand has 9 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:57:32,431 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:57:37,460 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 03:57:42,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:57:42,443 INFO L93 Difference]: Finished difference Result 104116 states and 161325 transitions. [2021-11-23 03:57:42,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-23 03:57:42,444 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) Word has length 171 [2021-11-23 03:57:42,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:57:42,810 INFO L225 Difference]: With dead ends: 104116 [2021-11-23 03:57:42,811 INFO L226 Difference]: Without dead ends: 61297 [2021-11-23 03:57:43,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-23 03:57:43,046 INFO L933 BasicCegarLoop]: 3828 mSDtfsCounter, 1318 mSDsluCounter, 28115 mSDsCounter, 0 mSdLazyCounter, 2509 mSolverCounterSat, 234 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 29812 SdHoareTripleChecker+Invalid, 2745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 2509 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.3s IncrementalHoareTripleChecker+Time [2021-11-23 03:57:43,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1437 Valid, 29812 Invalid, 2745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [234 Valid, 2509 Invalid, 2 Unknown, 0 Unchecked, 9.3s Time] [2021-11-23 03:57:43,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61297 states. [2021-11-23 03:57:45,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61297 to 42921. [2021-11-23 03:57:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42921 states, 26489 states have (on average 1.3682660727094265) internal successors, (36244), 28417 states have internal predecessors, (36244), 13066 states have call successors, (13066), 3382 states have call predecessors, (13066), 3365 states have return successors, (15483), 12215 states have call predecessors, (15483), 13041 states have call successors, (15483) [2021-11-23 03:57:46,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42921 states to 42921 states and 64793 transitions. [2021-11-23 03:57:46,169 INFO L78 Accepts]: Start accepts. Automaton has 42921 states and 64793 transitions. Word has length 171 [2021-11-23 03:57:46,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:57:46,170 INFO L470 AbstractCegarLoop]: Abstraction has 42921 states and 64793 transitions. [2021-11-23 03:57:46,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.125) internal successors, (81), 7 states have internal predecessors, (81), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (23), 4 states have call predecessors, (23), 2 states have call successors, (23) [2021-11-23 03:57:46,171 INFO L276 IsEmpty]: Start isEmpty. Operand 42921 states and 64793 transitions. [2021-11-23 03:57:46,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-23 03:57:46,195 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:57:46,195 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:57:46,195 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-23 03:57:46,195 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:57:46,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:57:46,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1842632259, now seen corresponding path program 1 times [2021-11-23 03:57:46,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:57:46,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063456] [2021-11-23 03:57:46,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:57:46,197 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:57:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:57:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-11-23 03:57:46,964 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:57:46,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063456] [2021-11-23 03:57:46,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063456] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:57:46,964 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:57:46,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-23 03:57:46,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922902209] [2021-11-23 03:57:46,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:57:46,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-23 03:57:46,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:57:46,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-23 03:57:46,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-23 03:57:46,968 INFO L87 Difference]: Start difference. First operand 42921 states and 64793 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-23 03:57:49,067 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:58:00,828 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 03:58:02,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:58:02,886 INFO L93 Difference]: Finished difference Result 66963 states and 101621 transitions. [2021-11-23 03:58:02,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-23 03:58:02,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 172 [2021-11-23 03:58:02,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:58:03,433 INFO L225 Difference]: With dead ends: 66963 [2021-11-23 03:58:03,434 INFO L226 Difference]: Without dead ends: 66960 [2021-11-23 03:58:03,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-23 03:58:03,469 INFO L933 BasicCegarLoop]: 3091 mSDtfsCounter, 4692 mSDsluCounter, 3000 mSDsCounter, 0 mSdLazyCounter, 3620 mSolverCounterSat, 2800 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5191 SdHoareTripleChecker+Valid, 5784 SdHoareTripleChecker+Invalid, 6422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2800 IncrementalHoareTripleChecker+Valid, 3620 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2021-11-23 03:58:03,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5191 Valid, 5784 Invalid, 6422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2800 Valid, 3620 Invalid, 2 Unknown, 0 Unchecked, 13.5s Time] [2021-11-23 03:58:03,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66960 states. [2021-11-23 03:58:06,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66960 to 65449. [2021-11-23 03:58:06,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65449 states, 40642 states have (on average 1.3622115053393042) internal successors, (55363), 43506 states have internal predecessors, (55363), 19347 states have call successors, (19347), 4872 states have call predecessors, (19347), 5459 states have return successors, (24246), 18631 states have call predecessors, (24246), 19310 states have call successors, (24246) [2021-11-23 03:58:07,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65449 states to 65449 states and 98956 transitions. [2021-11-23 03:58:07,099 INFO L78 Accepts]: Start accepts. Automaton has 65449 states and 98956 transitions. Word has length 172 [2021-11-23 03:58:07,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:58:07,101 INFO L470 AbstractCegarLoop]: Abstraction has 65449 states and 98956 transitions. [2021-11-23 03:58:07,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 4 states have call successors, (27), 4 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-11-23 03:58:07,101 INFO L276 IsEmpty]: Start isEmpty. Operand 65449 states and 98956 transitions. [2021-11-23 03:58:07,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2021-11-23 03:58:07,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:58:07,146 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:58:07,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-23 03:58:07,147 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:58:07,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:58:07,148 INFO L85 PathProgramCache]: Analyzing trace with hash -711955959, now seen corresponding path program 1 times [2021-11-23 03:58:07,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:58:07,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386707627] [2021-11-23 03:58:07,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:07,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:58:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2021-11-23 03:58:07,416 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:58:07,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386707627] [2021-11-23 03:58:07,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386707627] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:58:07,417 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:58:07,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-23 03:58:07,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892059187] [2021-11-23 03:58:07,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:58:07,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-23 03:58:07,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:58:07,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-23 03:58:07,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:58:07,420 INFO L87 Difference]: Start difference. First operand 65449 states and 98956 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:58:09,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.39s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:58:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-23 03:58:16,983 INFO L93 Difference]: Finished difference Result 194634 states and 294077 transitions. [2021-11-23 03:58:16,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-23 03:58:16,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 201 [2021-11-23 03:58:16,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-23 03:58:17,690 INFO L225 Difference]: With dead ends: 194634 [2021-11-23 03:58:17,691 INFO L226 Difference]: Without dead ends: 129215 [2021-11-23 03:58:18,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-23 03:58:18,237 INFO L933 BasicCegarLoop]: 3787 mSDtfsCounter, 3251 mSDsluCounter, 3327 mSDsCounter, 0 mSdLazyCounter, 604 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3251 SdHoareTripleChecker+Valid, 6820 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 604 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-11-23 03:58:18,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3251 Valid, 6820 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 604 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2021-11-23 03:58:18,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129215 states. [2021-11-23 03:58:25,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129215 to 129203. [2021-11-23 03:58:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129203 states, 80037 states have (on average 1.3603458400489774) internal successors, (108878), 85666 states have internal predecessors, (108878), 38300 states have call successors, (38300), 9702 states have call predecessors, (38300), 10865 states have return successors, (47931), 36848 states have call predecessors, (47931), 38227 states have call successors, (47931) [2021-11-23 03:58:26,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129203 states to 129203 states and 195109 transitions. [2021-11-23 03:58:26,559 INFO L78 Accepts]: Start accepts. Automaton has 129203 states and 195109 transitions. Word has length 201 [2021-11-23 03:58:26,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-23 03:58:26,560 INFO L470 AbstractCegarLoop]: Abstraction has 129203 states and 195109 transitions. [2021-11-23 03:58:26,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-11-23 03:58:26,561 INFO L276 IsEmpty]: Start isEmpty. Operand 129203 states and 195109 transitions. [2021-11-23 03:58:26,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-11-23 03:58:26,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-23 03:58:26,649 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-23 03:58:26,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-23 03:58:26,650 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-23 03:58:26,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-23 03:58:26,650 INFO L85 PathProgramCache]: Analyzing trace with hash 240889402, now seen corresponding path program 1 times [2021-11-23 03:58:26,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-23 03:58:26,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367113088] [2021-11-23 03:58:26,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-23 03:58:26,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-23 03:58:27,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-23 03:58:28,957 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 03:58:28,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-23 03:58:28,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367113088] [2021-11-23 03:58:28,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367113088] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-23 03:58:28,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-23 03:58:28,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-23 03:58:28,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460129841] [2021-11-23 03:58:28,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-23 03:58:28,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-23 03:58:28,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-23 03:58:28,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-23 03:58:28,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-11-23 03:58:28,960 INFO L87 Difference]: Start difference. First operand 129203 states and 195109 transitions. Second operand has 14 states, 12 states have (on average 8.0) internal successors, (96), 12 states have internal predecessors, (96), 9 states have call successors, (35), 5 states have call predecessors, (35), 3 states have return successors, (23), 9 states have call predecessors, (23), 8 states have call successors, (23) [2021-11-23 03:58:31,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:58:33,397 WARN L534 Checker$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 03:58:35,423 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-23 03:58:37,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []