./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-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW --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 c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-4e7fbc6 [2022-11-23 15:03:43,432 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 15:03:43,435 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 15:03:43,476 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 15:03:43,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 15:03:43,480 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 15:03:43,481 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 15:03:43,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 15:03:43,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 15:03:43,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 15:03:43,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 15:03:43,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 15:03:43,488 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 15:03:43,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 15:03:43,492 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 15:03:43,494 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 15:03:43,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 15:03:43,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 15:03:43,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 15:03:43,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 15:03:43,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 15:03:43,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 15:03:43,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 15:03:43,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 15:03:43,521 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 15:03:43,522 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 15:03:43,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 15:03:43,525 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 15:03:43,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 15:03:43,527 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 15:03:43,528 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 15:03:43,529 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 15:03:43,530 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 15:03:43,532 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 15:03:43,533 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 15:03:43,533 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 15:03:43,534 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 15:03:43,534 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 15:03:43,534 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 15:03:43,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 15:03:43,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 15:03:43,538 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 15:03:43,570 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 15:03:43,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 15:03:43,571 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 15:03:43,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 15:03:43,572 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 15:03:43,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 15:03:43,572 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 15:03:43,572 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 15:03:43,573 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 15:03:43,573 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 15:03:43,573 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 15:03:43,573 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 15:03:43,573 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 15:03:43,574 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 15:03:43,574 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 15:03:43,574 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 15:03:43,574 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 15:03:43,579 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 15:03:43,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 15:03:43,581 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 15:03:43,582 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 15:03:43,587 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 15:03:43,587 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 15:03:43,587 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 15:03:43,588 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 15:03:43,588 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 15:03:43,588 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 15:03:43,588 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 15:03:43,589 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 15:03:43,589 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:03:43,589 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 15:03:43,590 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 15:03:43,590 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 15:03:43,590 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 15:03:43,590 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 15:03:43,590 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 15:03:43,591 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 15:03:43,591 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 15:03:43,591 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9b552a362a9e696d48563826feaca907111a4f22b87ac0d62165b45d307f684 [2022-11-23 15:03:43,894 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 15:03:43,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 15:03:43,929 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 15:03:43,930 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 15:03:43,931 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 15:03:43,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-11-23 15:03:47,027 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 15:03:47,685 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 15:03:47,686 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-11-23 15:03:47,737 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/data/ca989d04e/101c83b232a04e2999efa60dd96d9423/FLAGd16590656 [2022-11-23 15:03:47,755 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/data/ca989d04e/101c83b232a04e2999efa60dd96d9423 [2022-11-23 15:03:47,758 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 15:03:47,760 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 15:03:47,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 15:03:47,762 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 15:03:47,766 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 15:03:47,767 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:47" (1/1) ... [2022-11-23 15:03:47,768 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48f9ee77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:47, skipping insertion in model container [2022-11-23 15:03:47,768 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 03:03:47" (1/1) ... [2022-11-23 15:03:47,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 15:03:47,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 15:03:49,965 WARN L237 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_86e68041-ba95-40c7-9421-7766596acaf3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-11-23 15:03:50,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:03:50,251 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 15:03:50,727 WARN L237 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_86e68041-ba95-40c7-9421-7766596acaf3/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i[280100,280113] [2022-11-23 15:03:50,744 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 15:03:50,906 INFO L208 MainTranslator]: Completed translation [2022-11-23 15:03:50,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50 WrapperNode [2022-11-23 15:03:50,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 15:03:50,909 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 15:03:50,909 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 15:03:50,909 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 15:03:50,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,014 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,201 INFO L138 Inliner]: procedures = 305, calls = 2580, calls flagged for inlining = 126, calls inlined = 120, statements flattened = 5615 [2022-11-23 15:03:51,201 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 15:03:51,202 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 15:03:51,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 15:03:51,203 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 15:03:51,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,353 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,354 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,565 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,583 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,628 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 15:03:51,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 15:03:51,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 15:03:51,630 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 15:03:51,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (1/1) ... [2022-11-23 15:03:51,639 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 15:03:51,650 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:03:51,666 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 15:03:51,690 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 15:03:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 15:03:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 15:03:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 15:03:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 15:03:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure pci_release_regions [2022-11-23 15:03:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_release_regions [2022-11-23 15:03:51,712 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 15:03:51,712 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 15:03:51,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 15:03:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 15:03:51,713 INFO L130 BoogieDeclarations]: Found specification of procedure request_irq [2022-11-23 15:03:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure request_irq [2022-11-23 15:03:51,713 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 15:03:51,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 15:03:51,713 INFO L130 BoogieDeclarations]: Found specification of procedure twa_get_request_id [2022-11-23 15:03:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_get_request_id [2022-11-23 15:03:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure twa_fill_sense [2022-11-23 15:03:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_fill_sense [2022-11-23 15:03:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-11-23 15:03:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-11-23 15:03:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure free_irq [2022-11-23 15:03:51,714 INFO L138 BoogieDeclarations]: Found implementation of procedure free_irq [2022-11-23 15:03:51,714 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_remove_host [2022-11-23 15:03:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_remove_host [2022-11-23 15:03:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 15:03:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 15:03:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 15:03:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 15:03:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_4 [2022-11-23 15:03:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_4 [2022-11-23 15:03:51,715 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 15:03:51,715 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 15:03:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 15:03:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 15:03:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_irq_1 [2022-11-23 15:03:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_irq_1 [2022-11-23 15:03:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure twa_resume [2022-11-23 15:03:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_resume [2022-11-23 15:03:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 15:03:51,716 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 15:03:51,716 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-11-23 15:03:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-11-23 15:03:51,717 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 15:03:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 15:03:51,717 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-23 15:03:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-23 15:03:51,717 INFO L130 BoogieDeclarations]: Found specification of procedure twa_remove [2022-11-23 15:03:51,717 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_remove [2022-11-23 15:03:51,717 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 15:03:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure twa_reset_sequence [2022-11-23 15:03:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_reset_sequence [2022-11-23 15:03:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_master [2022-11-23 15:03:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_master [2022-11-23 15:03:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 15:03:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure twa_get_param [2022-11-23 15:03:51,718 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_get_param [2022-11-23 15:03:51,718 INFO L130 BoogieDeclarations]: Found specification of procedure pci_get_drvdata [2022-11-23 15:03:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_get_drvdata [2022-11-23 15:03:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure twa_string_lookup [2022-11-23 15:03:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_string_lookup [2022-11-23 15:03:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 15:03:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 15:03:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 15:03:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure iounmap [2022-11-23 15:03:51,719 INFO L138 BoogieDeclarations]: Found implementation of procedure iounmap [2022-11-23 15:03:51,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 15:03:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure __twa_shutdown [2022-11-23 15:03:51,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __twa_shutdown [2022-11-23 15:03:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_twa_chrdev_mutex [2022-11-23 15:03:51,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_twa_chrdev_mutex [2022-11-23 15:03:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure __might_fault [2022-11-23 15:03:51,720 INFO L138 BoogieDeclarations]: Found implementation of procedure __might_fault [2022-11-23 15:03:51,720 INFO L130 BoogieDeclarations]: Found specification of procedure do_gettimeofday [2022-11-23 15:03:51,720 INFO L138 BoogieDeclarations]: Found implementation of procedure do_gettimeofday [2022-11-23 15:03:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure twa_shutdown [2022-11-23 15:03:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_shutdown [2022-11-23 15:03:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure twa_post_command_packet [2022-11-23 15:03:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_post_command_packet [2022-11-23 15:03:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2022-11-23 15:03:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2022-11-23 15:03:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure twa_free_request_id [2022-11-23 15:03:51,721 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_free_request_id [2022-11-23 15:03:51,721 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_consistent_dma_mask [2022-11-23 15:03:51,722 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_consistent_dma_mask [2022-11-23 15:03:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 15:03:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_dma_unmap [2022-11-23 15:03:51,722 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_dma_unmap [2022-11-23 15:03:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure twa_decode_bits [2022-11-23 15:03:51,722 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_decode_bits [2022-11-23 15:03:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 15:03:51,722 INFO L130 BoogieDeclarations]: Found specification of procedure dma_free_attrs [2022-11-23 15:03:51,722 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_free_attrs [2022-11-23 15:03:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 15:03:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure reg_check_1 [2022-11-23 15:03:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_check_1 [2022-11-23 15:03:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 15:03:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 15:03:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure pci_try_set_mwi [2022-11-23 15:03:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_try_set_mwi [2022-11-23 15:03:51,723 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-23 15:03:51,723 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-23 15:03:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_dma_mask [2022-11-23 15:03:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_dma_mask [2022-11-23 15:03:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure twa_initconnection [2022-11-23 15:03:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_initconnection [2022-11-23 15:03:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure pci_free_consistent [2022-11-23 15:03:51,724 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_free_consistent [2022-11-23 15:03:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 15:03:51,724 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_device [2022-11-23 15:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_device [2022-11-23 15:03:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_irq_1 [2022-11-23 15:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_irq_1 [2022-11-23 15:03:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 15:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 15:03:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 15:03:51,725 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 15:03:51,725 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_ioctl_lock_of_TAG_TW_Device_Extension [2022-11-23 15:03:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_ioctl_lock_of_TAG_TW_Device_Extension [2022-11-23 15:03:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_msi_exact [2022-11-23 15:03:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_msi_exact [2022-11-23 15:03:51,726 INFO L130 BoogieDeclarations]: Found specification of procedure twa_aen_queue_event [2022-11-23 15:03:51,726 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_aen_queue_event [2022-11-23 15:03:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 15:03:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure twa_interrupt [2022-11-23 15:03:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_interrupt [2022-11-23 15:03:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 15:03:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 15:03:51,781 INFO L130 BoogieDeclarations]: Found specification of procedure copy_from_user [2022-11-23 15:03:51,781 INFO L138 BoogieDeclarations]: Found implementation of procedure copy_from_user [2022-11-23 15:03:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-11-23 15:03:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-11-23 15:03:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 15:03:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-23 15:03:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-23 15:03:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure pci_enable_device [2022-11-23 15:03:51,782 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_enable_device [2022-11-23 15:03:51,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 15:03:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_1 [2022-11-23 15:03:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_1 [2022-11-23 15:03:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:03:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 15:03:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_irq_2 [2022-11-23 15:03:51,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_irq_2 [2022-11-23 15:03:51,783 INFO L130 BoogieDeclarations]: Found specification of procedure twa_allocate_memory [2022-11-23 15:03:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_allocate_memory [2022-11-23 15:03:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-23 15:03:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-23 15:03:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure twa_poll_response [2022-11-23 15:03:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_poll_response [2022-11-23 15:03:51,784 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_resume_early_3 [2022-11-23 15:03:51,784 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_resume_early_3 [2022-11-23 15:03:51,785 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_ioctl_lock_of_TAG_TW_Device_Extension [2022-11-23 15:03:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_ioctl_lock_of_TAG_TW_Device_Extension [2022-11-23 15:03:51,785 INFO L130 BoogieDeclarations]: Found specification of procedure twa_scsiop_execute_scsi [2022-11-23 15:03:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_scsiop_execute_scsi [2022-11-23 15:03:51,785 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2022-11-23 15:03:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2022-11-23 15:03:51,785 INFO L130 BoogieDeclarations]: Found specification of procedure twa_reset_device_extension [2022-11-23 15:03:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_reset_device_extension [2022-11-23 15:03:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure twa_free_device_extension [2022-11-23 15:03:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_free_device_extension [2022-11-23 15:03:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure pci_set_power_state [2022-11-23 15:03:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_set_power_state [2022-11-23 15:03:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_twa_chrdev_mutex [2022-11-23 15:03:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_twa_chrdev_mutex [2022-11-23 15:03:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure twa_check_bits [2022-11-23 15:03:51,786 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_check_bits [2022-11-23 15:03:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure dma_alloc_attrs [2022-11-23 15:03:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure dma_alloc_attrs [2022-11-23 15:03:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure pci_disable_msi [2022-11-23 15:03:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure pci_disable_msi [2022-11-23 15:03:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-11-23 15:03:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-11-23 15:03:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-11-23 15:03:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-11-23 15:03:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 15:03:51,787 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 15:03:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 15:03:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure twa_aen_read_queue [2022-11-23 15:03:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure twa_aen_read_queue [2022-11-23 15:03:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 15:03:51,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 15:03:52,634 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 15:03:52,640 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 15:03:52,910 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 15:03:59,017 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 15:04:00,702 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 15:04:00,703 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 15:04:00,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:00 BoogieIcfgContainer [2022-11-23 15:04:00,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 15:04:00,710 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 15:04:00,710 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 15:04:00,713 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 15:04:00,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 03:03:47" (1/3) ... [2022-11-23 15:04:00,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdca1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:00, skipping insertion in model container [2022-11-23 15:04:00,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 03:03:50" (2/3) ... [2022-11-23 15:04:00,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fdca1a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 03:04:00, skipping insertion in model container [2022-11-23 15:04:00,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 03:04:00" (3/3) ... [2022-11-23 15:04:00,717 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--scsi--3w-9xxx.ko-entry_point.cil.out.i [2022-11-23 15:04:00,738 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 15:04:00,738 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 15:04:00,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 15:04:00,845 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7d226032, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 15:04:00,846 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 15:04:00,857 INFO L276 IsEmpty]: Start isEmpty. Operand has 1161 states, 739 states have (on average 1.3721244925575102) internal successors, (1014), 776 states have internal predecessors, (1014), 338 states have call successors, (338), 83 states have call predecessors, (338), 82 states have return successors, (328), 327 states have call predecessors, (328), 328 states have call successors, (328) [2022-11-23 15:04:00,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-11-23 15:04:00,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:00,881 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:00,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:00,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -998951051, now seen corresponding path program 1 times [2022-11-23 15:04:00,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:00,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995134288] [2022-11-23 15:04:00,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:00,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:01,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:02,232 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-23 15:04:02,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:02,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995134288] [2022-11-23 15:04:02,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [995134288] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:02,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:02,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452844412] [2022-11-23 15:04:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:02,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:02,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:02,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:02,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:02,295 INFO L87 Difference]: Start difference. First operand has 1161 states, 739 states have (on average 1.3721244925575102) internal successors, (1014), 776 states have internal predecessors, (1014), 338 states have call successors, (338), 83 states have call predecessors, (338), 82 states have return successors, (328), 327 states have call predecessors, (328), 328 states have call successors, (328) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-23 15:04:05,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:08,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:12,012 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:13,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:13,090 INFO L93 Difference]: Finished difference Result 3371 states and 4888 transitions. [2022-11-23 15:04:13,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:13,093 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 160 [2022-11-23 15:04:13,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:13,130 INFO L225 Difference]: With dead ends: 3371 [2022-11-23 15:04:13,130 INFO L226 Difference]: Without dead ends: 2219 [2022-11-23 15:04:13,141 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:13,144 INFO L413 NwaCegarLoop]: 1806 mSDtfsCounter, 1545 mSDsluCounter, 1422 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 3 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1549 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:13,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1549 Valid, 3228 Invalid, 510 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3 Valid, 504 Invalid, 3 Unknown, 0 Unchecked, 10.4s Time] [2022-11-23 15:04:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2219 states. [2022-11-23 15:04:13,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2219 to 2210. [2022-11-23 15:04:13,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2210 states, 1430 states have (on average 1.3601398601398602) internal successors, (1945), 1472 states have internal predecessors, (1945), 619 states have call successors, (619), 162 states have call predecessors, (619), 160 states have return successors, (609), 605 states have call predecessors, (609), 609 states have call successors, (609) [2022-11-23 15:04:13,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2210 states to 2210 states and 3173 transitions. [2022-11-23 15:04:13,408 INFO L78 Accepts]: Start accepts. Automaton has 2210 states and 3173 transitions. Word has length 160 [2022-11-23 15:04:13,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:13,419 INFO L495 AbstractCegarLoop]: Abstraction has 2210 states and 3173 transitions. [2022-11-23 15:04:13,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-23 15:04:13,422 INFO L276 IsEmpty]: Start isEmpty. Operand 2210 states and 3173 transitions. [2022-11-23 15:04:13,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-23 15:04:13,432 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:13,432 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:13,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 15:04:13,433 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:13,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:13,434 INFO L85 PathProgramCache]: Analyzing trace with hash -368348004, now seen corresponding path program 1 times [2022-11-23 15:04:13,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:13,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067132980] [2022-11-23 15:04:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:13,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:13,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:14,074 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-23 15:04:14,074 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:14,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067132980] [2022-11-23 15:04:14,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067132980] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:14,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:14,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:14,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701655053] [2022-11-23 15:04:14,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:14,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:14,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:14,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:14,079 INFO L87 Difference]: Start difference. First operand 2210 states and 3173 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-23 15:04:15,151 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:19,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:21,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:21,105 INFO L93 Difference]: Finished difference Result 6385 states and 9189 transitions. [2022-11-23 15:04:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:21,106 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) Word has length 163 [2022-11-23 15:04:21,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:21,137 INFO L225 Difference]: With dead ends: 6385 [2022-11-23 15:04:21,137 INFO L226 Difference]: Without dead ends: 4208 [2022-11-23 15:04:21,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:21,150 INFO L413 NwaCegarLoop]: 1720 mSDtfsCounter, 1533 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1533 SdHoareTripleChecker+Valid, 3041 SdHoareTripleChecker+Invalid, 494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:21,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1533 Valid, 3041 Invalid, 494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 485 Invalid, 1 Unknown, 0 Unchecked, 6.7s Time] [2022-11-23 15:04:21,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4208 states. [2022-11-23 15:04:21,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4208 to 4162. [2022-11-23 15:04:21,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4162 states, 2714 states have (on average 1.366617538688283) internal successors, (3709), 2791 states have internal predecessors, (3709), 1136 states have call successors, (1136), 314 states have call predecessors, (1136), 311 states have return successors, (1163), 1108 states have call predecessors, (1163), 1126 states have call successors, (1163) [2022-11-23 15:04:21,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4162 states to 4162 states and 6008 transitions. [2022-11-23 15:04:21,368 INFO L78 Accepts]: Start accepts. Automaton has 4162 states and 6008 transitions. Word has length 163 [2022-11-23 15:04:21,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:21,371 INFO L495 AbstractCegarLoop]: Abstraction has 4162 states and 6008 transitions. [2022-11-23 15:04:21,371 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (17), 1 states have call predecessors, (17), 1 states have call successors, (17) [2022-11-23 15:04:21,371 INFO L276 IsEmpty]: Start isEmpty. Operand 4162 states and 6008 transitions. [2022-11-23 15:04:21,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2022-11-23 15:04:21,383 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:21,384 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:21,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 15:04:21,384 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:21,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:21,395 INFO L85 PathProgramCache]: Analyzing trace with hash -747725685, now seen corresponding path program 1 times [2022-11-23 15:04:21,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:21,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869560831] [2022-11-23 15:04:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:21,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:21,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:22,067 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2022-11-23 15:04:22,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:22,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869560831] [2022-11-23 15:04:22,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869560831] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:22,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:22,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:22,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856493330] [2022-11-23 15:04:22,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:22,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:22,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:22,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:22,073 INFO L87 Difference]: Start difference. First operand 4162 states and 6008 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:04:24,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:26,575 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:31,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:31,658 INFO L93 Difference]: Finished difference Result 11926 states and 17207 transitions. [2022-11-23 15:04:31,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:31,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 170 [2022-11-23 15:04:31,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:31,728 INFO L225 Difference]: With dead ends: 11926 [2022-11-23 15:04:31,729 INFO L226 Difference]: Without dead ends: 7797 [2022-11-23 15:04:31,755 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:31,756 INFO L413 NwaCegarLoop]: 1729 mSDtfsCounter, 1375 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 3131 SdHoareTripleChecker+Invalid, 495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:31,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 3131 Invalid, 495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 490 Invalid, 3 Unknown, 0 Unchecked, 9.2s Time] [2022-11-23 15:04:31,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7797 states. [2022-11-23 15:04:32,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7797 to 7756. [2022-11-23 15:04:32,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7756 states, 5062 states have (on average 1.3644804425128407) internal successors, (6907), 5205 states have internal predecessors, (6907), 2114 states have call successors, (2114), 588 states have call predecessors, (2114), 579 states have return successors, (2175), 2066 states have call predecessors, (2175), 2104 states have call successors, (2175) [2022-11-23 15:04:32,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7756 states to 7756 states and 11196 transitions. [2022-11-23 15:04:32,222 INFO L78 Accepts]: Start accepts. Automaton has 7756 states and 11196 transitions. Word has length 170 [2022-11-23 15:04:32,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:32,223 INFO L495 AbstractCegarLoop]: Abstraction has 7756 states and 11196 transitions. [2022-11-23 15:04:32,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:04:32,224 INFO L276 IsEmpty]: Start isEmpty. Operand 7756 states and 11196 transitions. [2022-11-23 15:04:32,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-23 15:04:32,229 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:32,230 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:32,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 15:04:32,230 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:32,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:32,231 INFO L85 PathProgramCache]: Analyzing trace with hash -529221075, now seen corresponding path program 1 times [2022-11-23 15:04:32,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:32,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540660494] [2022-11-23 15:04:32,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:32,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:32,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-11-23 15:04:32,701 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:32,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540660494] [2022-11-23 15:04:32,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540660494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:32,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:32,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:32,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528052041] [2022-11-23 15:04:32,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:32,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:32,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:32,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:32,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:32,707 INFO L87 Difference]: Start difference. First operand 7756 states and 11196 transitions. Second operand has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:04:34,787 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:38,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:40,311 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:41,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:41,610 INFO L93 Difference]: Finished difference Result 11653 states and 16804 transitions. [2022-11-23 15:04:41,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:41,611 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 174 [2022-11-23 15:04:41,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:41,698 INFO L225 Difference]: With dead ends: 11653 [2022-11-23 15:04:41,698 INFO L226 Difference]: Without dead ends: 11650 [2022-11-23 15:04:41,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:41,710 INFO L413 NwaCegarLoop]: 1701 mSDtfsCounter, 1566 mSDsluCounter, 1351 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1566 SdHoareTripleChecker+Valid, 3052 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:41,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1566 Valid, 3052 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 472 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-23 15:04:41,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11650 states. [2022-11-23 15:04:42,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11650 to 11642. [2022-11-23 15:04:42,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11642 states, 7598 states have (on average 1.3648328507501974) internal successors, (10370), 7809 states have internal predecessors, (10370), 3164 states have call successors, (3164), 891 states have call predecessors, (3164), 879 states have return successors, (3260), 3097 states have call predecessors, (3260), 3154 states have call successors, (3260) [2022-11-23 15:04:42,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11642 states to 11642 states and 16794 transitions. [2022-11-23 15:04:42,407 INFO L78 Accepts]: Start accepts. Automaton has 11642 states and 16794 transitions. Word has length 174 [2022-11-23 15:04:42,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:42,408 INFO L495 AbstractCegarLoop]: Abstraction has 11642 states and 16794 transitions. [2022-11-23 15:04:42,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.666666666666666) internal successors, (38), 3 states have internal predecessors, (38), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:04:42,409 INFO L276 IsEmpty]: Start isEmpty. Operand 11642 states and 16794 transitions. [2022-11-23 15:04:42,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-11-23 15:04:42,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:42,412 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:42,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 15:04:42,412 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:42,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:42,413 INFO L85 PathProgramCache]: Analyzing trace with hash 773563649, now seen corresponding path program 1 times [2022-11-23 15:04:42,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:42,413 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569637231] [2022-11-23 15:04:42,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:42,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:42,916 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-11-23 15:04:42,917 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:42,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569637231] [2022-11-23 15:04:42,919 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569637231] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:42,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:42,920 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:42,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045629752] [2022-11-23 15:04:42,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:42,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:42,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:42,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:42,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:42,922 INFO L87 Difference]: Start difference. First operand 11642 states and 16794 transitions. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:04:45,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:46,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:52,245 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:04:52,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:04:52,620 INFO L93 Difference]: Finished difference Result 22363 states and 32217 transitions. [2022-11-23 15:04:52,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:04:52,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 175 [2022-11-23 15:04:52,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:04:52,762 INFO L225 Difference]: With dead ends: 22363 [2022-11-23 15:04:52,763 INFO L226 Difference]: Without dead ends: 22358 [2022-11-23 15:04:52,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:52,780 INFO L413 NwaCegarLoop]: 1767 mSDtfsCounter, 1393 mSDsluCounter, 1340 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 6 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1393 SdHoareTripleChecker+Valid, 3107 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:04:52,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1393 Valid, 3107 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 507 Invalid, 2 Unknown, 0 Unchecked, 9.0s Time] [2022-11-23 15:04:52,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22358 states. [2022-11-23 15:04:53,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22358 to 22353. [2022-11-23 15:04:53,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22353 states, 14607 states have (on average 1.363729718628055) internal successors, (19920), 15010 states have internal predecessors, (19920), 6042 states have call successors, (6042), 1735 states have call predecessors, (6042), 1703 states have return successors, (6234), 5919 states have call predecessors, (6234), 6032 states have call successors, (6234) [2022-11-23 15:04:54,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22353 states to 22353 states and 32196 transitions. [2022-11-23 15:04:54,023 INFO L78 Accepts]: Start accepts. Automaton has 22353 states and 32196 transitions. Word has length 175 [2022-11-23 15:04:54,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:04:54,024 INFO L495 AbstractCegarLoop]: Abstraction has 22353 states and 32196 transitions. [2022-11-23 15:04:54,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:04:54,025 INFO L276 IsEmpty]: Start isEmpty. Operand 22353 states and 32196 transitions. [2022-11-23 15:04:54,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-11-23 15:04:54,028 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:04:54,029 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:04:54,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 15:04:54,029 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:04:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:04:54,029 INFO L85 PathProgramCache]: Analyzing trace with hash -1789778000, now seen corresponding path program 1 times [2022-11-23 15:04:54,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:04:54,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681582676] [2022-11-23 15:04:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:04:54,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:04:54,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:04:54,440 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-11-23 15:04:54,441 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:04:54,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681582676] [2022-11-23 15:04:54,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681582676] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:04:54,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:04:54,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:04:54,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521622407] [2022-11-23 15:04:54,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:04:54,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:04:54,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:04:54,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:04:54,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:04:54,443 INFO L87 Difference]: Start difference. First operand 22353 states and 32196 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:04:56,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:00,755 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:02,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:02,846 INFO L93 Difference]: Finished difference Result 22368 states and 32211 transitions. [2022-11-23 15:05:02,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:05:02,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 176 [2022-11-23 15:05:02,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:02,962 INFO L225 Difference]: With dead ends: 22368 [2022-11-23 15:05:02,962 INFO L226 Difference]: Without dead ends: 22365 [2022-11-23 15:05:02,977 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:02,978 INFO L413 NwaCegarLoop]: 1701 mSDtfsCounter, 1562 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1562 SdHoareTripleChecker+Valid, 3058 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:02,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1562 Valid, 3058 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 472 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-23 15:05:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22365 states. [2022-11-23 15:05:04,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22365 to 22356. [2022-11-23 15:05:04,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22356 states, 14610 states have (on average 1.3637234770704996) internal successors, (19924), 15013 states have internal predecessors, (19924), 6042 states have call successors, (6042), 1735 states have call predecessors, (6042), 1703 states have return successors, (6234), 5919 states have call predecessors, (6234), 6032 states have call successors, (6234) [2022-11-23 15:05:04,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22356 states to 22356 states and 32200 transitions. [2022-11-23 15:05:04,386 INFO L78 Accepts]: Start accepts. Automaton has 22356 states and 32200 transitions. Word has length 176 [2022-11-23 15:05:04,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:04,387 INFO L495 AbstractCegarLoop]: Abstraction has 22356 states and 32200 transitions. [2022-11-23 15:05:04,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:05:04,388 INFO L276 IsEmpty]: Start isEmpty. Operand 22356 states and 32200 transitions. [2022-11-23 15:05:04,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-11-23 15:05:04,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:04,392 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:04,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 15:05:04,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:04,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:04,393 INFO L85 PathProgramCache]: Analyzing trace with hash 351014372, now seen corresponding path program 1 times [2022-11-23 15:05:04,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:04,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880977660] [2022-11-23 15:05:04,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:04,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:04,799 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-11-23 15:05:04,799 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:04,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880977660] [2022-11-23 15:05:04,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880977660] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:04,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:04,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:05:04,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073825572] [2022-11-23 15:05:04,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:04,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:05:04,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:04,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:05:04,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:04,803 INFO L87 Difference]: Start difference. First operand 22356 states and 32200 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:05:06,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:11,234 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.97s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:11,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:11,493 INFO L93 Difference]: Finished difference Result 22358 states and 32201 transitions. [2022-11-23 15:05:11,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:05:11,493 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 177 [2022-11-23 15:05:11,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:11,614 INFO L225 Difference]: With dead ends: 22358 [2022-11-23 15:05:11,614 INFO L226 Difference]: Without dead ends: 22355 [2022-11-23 15:05:11,632 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:11,633 INFO L413 NwaCegarLoop]: 1405 mSDtfsCounter, 1599 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1599 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:11,634 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1599 Valid, 1405 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 238 Invalid, 1 Unknown, 0 Unchecked, 6.0s Time] [2022-11-23 15:05:11,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22355 states. [2022-11-23 15:05:12,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22355 to 22355. [2022-11-23 15:05:12,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22355 states, 14610 states have (on average 1.3636550308008213) internal successors, (19923), 15012 states have internal predecessors, (19923), 6041 states have call successors, (6041), 1735 states have call predecessors, (6041), 1703 states have return successors, (6234), 5919 states have call predecessors, (6234), 6032 states have call successors, (6234) [2022-11-23 15:05:13,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22355 states to 22355 states and 32198 transitions. [2022-11-23 15:05:13,048 INFO L78 Accepts]: Start accepts. Automaton has 22355 states and 32198 transitions. Word has length 177 [2022-11-23 15:05:13,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:13,050 INFO L495 AbstractCegarLoop]: Abstraction has 22355 states and 32198 transitions. [2022-11-23 15:05:13,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:05:13,050 INFO L276 IsEmpty]: Start isEmpty. Operand 22355 states and 32198 transitions. [2022-11-23 15:05:13,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-23 15:05:13,058 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:13,058 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:13,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 15:05:13,058 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:13,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:13,059 INFO L85 PathProgramCache]: Analyzing trace with hash -2003893965, now seen corresponding path program 1 times [2022-11-23 15:05:13,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:13,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356681294] [2022-11-23 15:05:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:13,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:13,472 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 427 trivial. 0 not checked. [2022-11-23 15:05:13,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:13,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356681294] [2022-11-23 15:05:13,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356681294] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:13,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:13,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:05:13,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586381049] [2022-11-23 15:05:13,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:13,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:05:13,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:13,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:05:13,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:13,474 INFO L87 Difference]: Start difference. First operand 22355 states and 32198 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:05:15,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:17,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:21,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:22,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:22,981 INFO L93 Difference]: Finished difference Result 23272 states and 33356 transitions. [2022-11-23 15:05:22,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:05:22,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 178 [2022-11-23 15:05:22,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:23,084 INFO L225 Difference]: With dead ends: 23272 [2022-11-23 15:05:23,084 INFO L226 Difference]: Without dead ends: 23262 [2022-11-23 15:05:23,095 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:23,096 INFO L413 NwaCegarLoop]: 1505 mSDtfsCounter, 1428 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 2097 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:23,097 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 2097 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 2 Unknown, 0 Unchecked, 8.7s Time] [2022-11-23 15:05:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23262 states. [2022-11-23 15:05:24,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23262 to 23211. [2022-11-23 15:05:24,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23211 states, 15159 states have (on average 1.3608417441783758) internal successors, (20629), 15565 states have internal predecessors, (20629), 6225 states have call successors, (6225), 1858 states have call predecessors, (6225), 1826 states have return successors, (6421), 6106 states have call predecessors, (6421), 6218 states have call successors, (6421) [2022-11-23 15:05:24,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23211 states to 23211 states and 33275 transitions. [2022-11-23 15:05:24,391 INFO L78 Accepts]: Start accepts. Automaton has 23211 states and 33275 transitions. Word has length 178 [2022-11-23 15:05:24,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:24,392 INFO L495 AbstractCegarLoop]: Abstraction has 23211 states and 33275 transitions. [2022-11-23 15:05:24,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-23 15:05:24,392 INFO L276 IsEmpty]: Start isEmpty. Operand 23211 states and 33275 transitions. [2022-11-23 15:05:24,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-11-23 15:05:24,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:24,413 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:24,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 15:05:24,413 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:24,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:24,414 INFO L85 PathProgramCache]: Analyzing trace with hash -329090, now seen corresponding path program 1 times [2022-11-23 15:05:24,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:24,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774664503] [2022-11-23 15:05:24,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:24,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:24,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:24,859 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 371 trivial. 0 not checked. [2022-11-23 15:05:24,859 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:24,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774664503] [2022-11-23 15:05:24,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774664503] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:24,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:24,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:05:24,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465403789] [2022-11-23 15:05:24,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:24,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:05:24,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:24,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:05:24,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:24,864 INFO L87 Difference]: Start difference. First operand 23211 states and 33275 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-23 15:05:26,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:29,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:31,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:34,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:39,501 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:41,375 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.75s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:42,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:42,012 INFO L93 Difference]: Finished difference Result 49235 states and 70360 transitions. [2022-11-23 15:05:42,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:05:42,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) Word has length 270 [2022-11-23 15:05:42,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:42,153 INFO L225 Difference]: With dead ends: 49235 [2022-11-23 15:05:42,153 INFO L226 Difference]: Without dead ends: 26057 [2022-11-23 15:05:42,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:42,263 INFO L413 NwaCegarLoop]: 1992 mSDtfsCounter, 1139 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 2 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1139 SdHoareTripleChecker+Valid, 3351 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:42,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1139 Valid, 3351 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 608 Invalid, 3 Unknown, 0 Unchecked, 15.9s Time] [2022-11-23 15:05:42,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26057 states. [2022-11-23 15:05:43,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26057 to 26019. [2022-11-23 15:05:43,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26019 states, 17120 states have (on average 1.358644859813084) internal successors, (23260), 17480 states have internal predecessors, (23260), 6788 states have call successors, (6788), 2148 states have call predecessors, (6788), 2110 states have return successors, (7027), 6676 states have call predecessors, (7027), 6781 states have call successors, (7027) [2022-11-23 15:05:43,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26019 states to 26019 states and 37075 transitions. [2022-11-23 15:05:43,744 INFO L78 Accepts]: Start accepts. Automaton has 26019 states and 37075 transitions. Word has length 270 [2022-11-23 15:05:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:43,745 INFO L495 AbstractCegarLoop]: Abstraction has 26019 states and 37075 transitions. [2022-11-23 15:05:43,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 2 states have call successors, (39), 2 states have call predecessors, (39), 1 states have return successors, (37), 2 states have call predecessors, (37), 2 states have call successors, (37) [2022-11-23 15:05:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 26019 states and 37075 transitions. [2022-11-23 15:05:43,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-11-23 15:05:43,768 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:43,768 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:43,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 15:05:43,769 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:43,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:43,770 INFO L85 PathProgramCache]: Analyzing trace with hash 563798923, now seen corresponding path program 1 times [2022-11-23 15:05:43,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:43,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256236996] [2022-11-23 15:05:43,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:43,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:43,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:44,656 INFO L134 CoverageAnalysis]: Checked inductivity of 452 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2022-11-23 15:05:44,656 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:44,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256236996] [2022-11-23 15:05:44,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256236996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:44,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 15:05:44,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 15:05:44,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453032129] [2022-11-23 15:05:44,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:44,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:05:44,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:44,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:05:44,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:44,659 INFO L87 Difference]: Start difference. First operand 26019 states and 37075 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-23 15:05:46,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:48,997 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.10s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:54,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:05:55,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:05:55,219 INFO L93 Difference]: Finished difference Result 51635 states and 73644 transitions. [2022-11-23 15:05:55,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:05:55,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 292 [2022-11-23 15:05:55,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:05:55,320 INFO L225 Difference]: With dead ends: 51635 [2022-11-23 15:05:55,320 INFO L226 Difference]: Without dead ends: 26127 [2022-11-23 15:05:55,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 15:05:55,391 INFO L413 NwaCegarLoop]: 1399 mSDtfsCounter, 11 mSDsluCounter, 1384 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 3 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2783 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-11-23 15:05:55,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2783 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 479 Invalid, 2 Unknown, 0 Unchecked, 9.1s Time] [2022-11-23 15:05:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26127 states. [2022-11-23 15:05:56,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26127 to 26046. [2022-11-23 15:05:56,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26046 states, 17147 states have (on average 1.3580801306350965) internal successors, (23287), 17507 states have internal predecessors, (23287), 6788 states have call successors, (6788), 2148 states have call predecessors, (6788), 2110 states have return successors, (7027), 6676 states have call predecessors, (7027), 6781 states have call successors, (7027) [2022-11-23 15:05:56,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26046 states to 26046 states and 37102 transitions. [2022-11-23 15:05:56,589 INFO L78 Accepts]: Start accepts. Automaton has 26046 states and 37102 transitions. Word has length 292 [2022-11-23 15:05:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:05:56,590 INFO L495 AbstractCegarLoop]: Abstraction has 26046 states and 37102 transitions. [2022-11-23 15:05:56,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2022-11-23 15:05:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 26046 states and 37102 transitions. [2022-11-23 15:05:56,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-11-23 15:05:56,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:05:56,613 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:05:56,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-23 15:05:56,614 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:05:56,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:05:56,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1739602274, now seen corresponding path program 1 times [2022-11-23 15:05:56,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:05:56,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224931927] [2022-11-23 15:05:56,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:56,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:05:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:57,469 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 453 trivial. 0 not checked. [2022-11-23 15:05:57,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:05:57,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224931927] [2022-11-23 15:05:57,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224931927] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:05:57,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629955818] [2022-11-23 15:05:57,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:05:57,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:05:57,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:05:57,479 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:05:57,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 15:05:59,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:05:59,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 5906 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 15:05:59,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:05:59,271 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-11-23 15:05:59,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 15:05:59,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629955818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 15:05:59,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-23 15:05:59,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-23 15:05:59,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553780150] [2022-11-23 15:05:59,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 15:05:59,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 15:05:59,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 15:05:59,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 15:05:59,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:05:59,274 INFO L87 Difference]: Start difference. First operand 26046 states and 37102 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (38), 2 states have call predecessors, (38), 1 states have call successors, (38) [2022-11-23 15:06:01,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:04,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:08,160 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 15:06:08,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 15:06:08,905 INFO L93 Difference]: Finished difference Result 53557 states and 76914 transitions. [2022-11-23 15:06:08,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 15:06:08,906 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (38), 2 states have call predecessors, (38), 1 states have call successors, (38) Word has length 296 [2022-11-23 15:06:08,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 15:06:09,046 INFO L225 Difference]: With dead ends: 53557 [2022-11-23 15:06:09,047 INFO L226 Difference]: Without dead ends: 28022 [2022-11-23 15:06:09,144 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-23 15:06:09,144 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 73 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 0 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 2822 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-23 15:06:09,145 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 2822 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 476 Invalid, 3 Unknown, 0 Unchecked, 8.3s Time] [2022-11-23 15:06:09,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28022 states. [2022-11-23 15:06:10,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28022 to 26072. [2022-11-23 15:06:10,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26072 states, 17173 states have (on average 1.3575379956909102) internal successors, (23313), 17533 states have internal predecessors, (23313), 6788 states have call successors, (6788), 2148 states have call predecessors, (6788), 2110 states have return successors, (7027), 6676 states have call predecessors, (7027), 6781 states have call successors, (7027) [2022-11-23 15:06:10,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26072 states to 26072 states and 37128 transitions. [2022-11-23 15:06:10,802 INFO L78 Accepts]: Start accepts. Automaton has 26072 states and 37128 transitions. Word has length 296 [2022-11-23 15:06:10,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 15:06:10,803 INFO L495 AbstractCegarLoop]: Abstraction has 26072 states and 37128 transitions. [2022-11-23 15:06:10,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 2 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (38), 2 states have call predecessors, (38), 1 states have call successors, (38) [2022-11-23 15:06:10,803 INFO L276 IsEmpty]: Start isEmpty. Operand 26072 states and 37128 transitions. [2022-11-23 15:06:10,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2022-11-23 15:06:10,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 15:06:10,827 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 15:06:10,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 15:06:11,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:11,043 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 15:06:11,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 15:06:11,044 INFO L85 PathProgramCache]: Analyzing trace with hash 108186212, now seen corresponding path program 1 times [2022-11-23 15:06:11,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 15:06:11,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129830682] [2022-11-23 15:06:11,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:11,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 15:06:11,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:11,951 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-11-23 15:06:11,951 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 15:06:11,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129830682] [2022-11-23 15:06:11,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129830682] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 15:06:11,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [228438233] [2022-11-23 15:06:11,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 15:06:11,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 15:06:11,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 15:06:11,953 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 15:06:11,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86e68041-ba95-40c7-9421-7766596acaf3/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 15:06:13,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 15:06:13,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 5961 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 15:06:13,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 15:06:13,745 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 454 trivial. 0 not checked. [2022-11-23 15:06:13,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 15:06:14,114 INFO L134 CoverageAnalysis]: Checked inductivity of 459 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2022-11-23 15:06:14,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [228438233] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-23 15:06:14,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1619199994] [2022-11-23 15:06:14,166 INFO L159 IcfgInterpreter]: Started Sifa with 171 locations of interest [2022-11-23 15:06:14,166 INFO L166 IcfgInterpreter]: Building call graph [2022-11-23 15:06:14,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-23 15:06:14,177 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-23 15:06:14,177 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-23 15:06:30,695 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:06:30,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:06:30,699 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:06:30,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:06:30,703 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:06:30,705 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:06:30,707 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-23 15:06:33,210 INFO L217 Elim1Store]: Index analysis took 6914 ms