./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.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-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/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_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/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_eaf54573-8472-4ddc-83ab-51609c88069c/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 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 --- 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 14:09:08,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 14:09:08,623 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 14:09:08,651 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 14:09:08,652 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 14:09:08,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 14:09:08,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 14:09:08,664 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 14:09:08,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 14:09:08,682 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 14:09:08,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 14:09:08,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 14:09:08,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 14:09:08,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 14:09:08,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 14:09:08,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 14:09:08,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 14:09:08,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 14:09:08,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 14:09:08,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 14:09:08,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 14:09:08,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 14:09:08,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 14:09:08,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 14:09:08,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 14:09:08,719 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 14:09:08,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 14:09:08,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 14:09:08,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 14:09:08,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 14:09:08,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 14:09:08,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 14:09:08,728 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 14:09:08,729 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 14:09:08,731 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 14:09:08,731 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 14:09:08,732 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 14:09:08,733 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 14:09:08,733 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 14:09:08,735 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 14:09:08,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 14:09:08,737 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-23 14:09:08,777 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 14:09:08,777 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 14:09:08,778 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 14:09:08,778 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 14:09:08,779 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 14:09:08,779 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 14:09:08,780 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-23 14:09:08,780 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-23 14:09:08,780 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-23 14:09:08,780 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-23 14:09:08,782 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-23 14:09:08,782 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-23 14:09:08,782 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-23 14:09:08,782 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-23 14:09:08,783 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-23 14:09:08,783 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-23 14:09:08,783 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-23 14:09:08,783 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-23 14:09:08,784 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 14:09:08,784 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 14:09:08,785 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 14:09:08,785 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 14:09:08,785 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 14:09:08,786 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 14:09:08,786 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 14:09:08,786 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 14:09:08,786 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 14:09:08,787 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 14:09:08,787 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 14:09:08,787 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:09:08,787 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 14:09:08,788 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-23 14:09:08,788 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 14:09:08,788 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 14:09:08,788 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-23 14:09:08,789 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 14:09:08,789 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 14:09:08,789 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-23 14:09:08,789 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_eaf54573-8472-4ddc-83ab-51609c88069c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 [2022-11-23 14:09:09,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 14:09:09,132 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 14:09:09,135 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 14:09:09,136 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 14:09:09,136 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 14:09:09,137 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-23 14:09:12,225 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 14:09:12,929 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 14:09:12,930 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-23 14:09:12,987 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/data/20b9257c7/ee0402e6b806441da5bb9ed449eeadc7/FLAGf7d25ee5f [2022-11-23 14:09:13,024 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/data/20b9257c7/ee0402e6b806441da5bb9ed449eeadc7 [2022-11-23 14:09:13,030 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 14:09:13,032 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 14:09:13,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 14:09:13,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 14:09:13,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 14:09:13,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:13" (1/1) ... [2022-11-23 14:09:13,041 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6fb48c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:13, skipping insertion in model container [2022-11-23 14:09:13,041 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 02:09:13" (1/1) ... [2022-11-23 14:09:13,049 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 14:09:13,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 14:09:16,989 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_eaf54573-8472-4ddc-83ab-51609c88069c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2022-11-23 14:09:17,066 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:09:17,254 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 14:09:17,930 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_eaf54573-8472-4ddc-83ab-51609c88069c/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2022-11-23 14:09:17,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 14:09:18,277 INFO L208 MainTranslator]: Completed translation [2022-11-23 14:09:18,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18 WrapperNode [2022-11-23 14:09:18,278 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 14:09:18,280 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 14:09:18,280 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 14:09:18,280 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 14:09:18,288 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:18,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:18,883 INFO L138 Inliner]: procedures = 367, calls = 5946, calls flagged for inlining = 162, calls inlined = 160, statements flattened = 12635 [2022-11-23 14:09:18,884 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 14:09:18,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 14:09:18,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 14:09:18,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 14:09:18,896 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:18,896 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:18,967 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:18,967 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:19,320 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:19,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:19,423 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:19,518 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:19,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 14:09:19,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 14:09:19,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 14:09:19,587 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 14:09:19,588 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (1/1) ... [2022-11-23 14:09:19,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 14:09:19,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:09:19,645 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 14:09:19,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 14:09:19,692 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-23 14:09:19,692 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-23 14:09:19,693 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-23 14:09:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-23 14:09:19,693 INFO L130 BoogieDeclarations]: Found specification of procedure map_index_to_lba [2022-11-23 14:09:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure map_index_to_lba [2022-11-23 14:09:19,693 INFO L130 BoogieDeclarations]: Found specification of procedure sector_size_show [2022-11-23 14:09:19,693 INFO L138 BoogieDeclarations]: Found implementation of procedure sector_size_show [2022-11-23 14:09:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 14:09:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 14:09:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-23 14:09:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-23 14:09:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure dif_show [2022-11-23 14:09:19,694 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_show [2022-11-23 14:09:19,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-23 14:09:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-23 14:09:19,695 INFO L130 BoogieDeclarations]: Found specification of procedure stop_all_queued [2022-11-23 14:09:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_all_queued [2022-11-23 14:09:19,695 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_remove_adapter [2022-11-23 14:09:19,695 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_remove_adapter [2022-11-23 14:09:19,695 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_lbp [2022-11-23 14:09:19,696 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_lbp [2022-11-23 14:09:19,696 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_queuecommand_lock_or_not [2022-11-23 14:09:19,697 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_queuecommand_lock_or_not [2022-11-23 14:09:19,697 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-23 14:09:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-23 14:09:19,698 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_host_reset [2022-11-23 14:09:19,698 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_host_reset [2022-11-23 14:09:19,699 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-23 14:09:19,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-23 14:09:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-23 14:09:19,700 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-23 14:09:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-11-23 14:09:19,700 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-11-23 14:09:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure dev_size_mb_show [2022-11-23 14:09:19,700 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_size_mb_show [2022-11-23 14:09:19,700 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 14:09:19,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 14:09:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure num_parts_show [2022-11-23 14:09:19,701 INFO L138 BoogieDeclarations]: Found implementation of procedure num_parts_show [2022-11-23 14:09:19,701 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_level_show [2022-11-23 14:09:19,702 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_level_show [2022-11-23 14:09:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-11-23 14:09:19,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-11-23 14:09:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2022-11-23 14:09:19,702 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2022-11-23 14:09:19,702 INFO L130 BoogieDeclarations]: Found specification of procedure fill_from_dev_buffer [2022-11-23 14:09:19,703 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_from_dev_buffer [2022-11-23 14:09:19,703 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_destroy [2022-11-23 14:09:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_destroy [2022-11-23 14:09:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure map_region [2022-11-23 14:09:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure map_region [2022-11-23 14:09:19,704 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-23 14:09:19,704 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-23 14:09:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-23 14:09:19,705 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-23 14:09:19,705 INFO L130 BoogieDeclarations]: Found specification of procedure fetch_to_dev_buffer [2022-11-23 14:09:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure fetch_to_dev_buffer [2022-11-23 14:09:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-23 14:09:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-23 14:09:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_set_guard [2022-11-23 14:09:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_set_guard [2022-11-23 14:09:19,706 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-23 14:09:19,706 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-23 14:09:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_info [2022-11-23 14:09:19,707 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_info [2022-11-23 14:09:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-11-23 14:09:19,707 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-11-23 14:09:19,707 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_abort [2022-11-23 14:09:19,707 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_abort [2022-11-23 14:09:19,708 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-23 14:09:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-23 14:09:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_resp [2022-11-23 14:09:19,709 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_resp [2022-11-23 14:09:19,709 INFO L130 BoogieDeclarations]: Found specification of procedure pseudo_lld_bus_match [2022-11-23 14:09:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure pseudo_lld_bus_match [2022-11-23 14:09:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 14:09:19,710 INFO L130 BoogieDeclarations]: Found specification of procedure host_lock_show [2022-11-23 14:09:19,710 INFO L138 BoogieDeclarations]: Found implementation of procedure host_lock_show [2022-11-23 14:09:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-23 14:09:19,711 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_bus_reset [2022-11-23 14:09:19,711 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_bus_reset [2022-11-23 14:09:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure no_lun_0_show [2022-11-23 14:09:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure no_lun_0_show [2022-11-23 14:09:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure dif_copy_prot [2022-11-23 14:09:19,712 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_copy_prot [2022-11-23 14:09:19,712 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 14:09:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be64 [2022-11-23 14:09:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be64 [2022-11-23 14:09:19,713 INFO L130 BoogieDeclarations]: Found specification of procedure resp_err_recov_pg [2022-11-23 14:09:19,713 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_err_recov_pg [2022-11-23 14:09:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-23 14:09:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure map_show [2022-11-23 14:09:19,714 INFO L138 BoogieDeclarations]: Found implementation of procedure map_show [2022-11-23 14:09:19,714 INFO L130 BoogieDeclarations]: Found specification of procedure no_uld_show [2022-11-23 14:09:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure no_uld_show [2022-11-23 14:09:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-23 14:09:19,715 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-23 14:09:19,715 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-23 14:09:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-23 14:09:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-23 14:09:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-23 14:09:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_build_sense_buffer [2022-11-23 14:09:19,716 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_build_sense_buffer [2022-11-23 14:09:19,716 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 14:09:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 14:09:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure removable_show [2022-11-23 14:09:19,717 INFO L138 BoogieDeclarations]: Found implementation of procedure removable_show [2022-11-23 14:09:19,717 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-23 14:09:19,718 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-23 14:09:19,719 INFO L130 BoogieDeclarations]: Found specification of procedure num_tgts_show [2022-11-23 14:09:19,722 INFO L138 BoogieDeclarations]: Found implementation of procedure num_tgts_show [2022-11-23 14:09:19,722 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_device_create [2022-11-23 14:09:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_device_create [2022-11-23 14:09:19,723 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-23 14:09:19,723 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-23 14:09:19,724 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_pcd_m_spg [2022-11-23 14:09:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_pcd_m_spg [2022-11-23 14:09:19,725 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-23 14:09:19,725 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-23 14:09:19,730 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-23 14:09:19,730 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-23 14:09:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure find_last_bit [2022-11-23 14:09:19,731 INFO L138 BoogieDeclarations]: Found implementation of procedure find_last_bit [2022-11-23 14:09:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_ioctl [2022-11-23 14:09:19,731 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_ioctl [2022-11-23 14:09:19,731 INFO L130 BoogieDeclarations]: Found specification of procedure max_queue_show [2022-11-23 14:09:19,731 INFO L138 BoogieDeclarations]: Found implementation of procedure max_queue_show [2022-11-23 14:09:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2022-11-23 14:09:19,732 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2022-11-23 14:09:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-23 14:09:19,732 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-23 14:09:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure check_device_access_params [2022-11-23 14:09:19,732 INFO L138 BoogieDeclarations]: Found implementation of procedure check_device_access_params [2022-11-23 14:09:19,732 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_priv [2022-11-23 14:09:19,733 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_priv [2022-11-23 14:09:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 14:09:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2022-11-23 14:09:19,733 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2022-11-23 14:09:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure strict_show [2022-11-23 14:09:19,733 INFO L138 BoogieDeclarations]: Found implementation of procedure strict_show [2022-11-23 14:09:19,733 INFO L130 BoogieDeclarations]: Found specification of procedure dif_verify [2022-11-23 14:09:19,734 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_verify [2022-11-23 14:09:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sf_m_pg [2022-11-23 14:09:19,734 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sf_m_pg [2022-11-23 14:09:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2022-11-23 14:09:19,734 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2022-11-23 14:09:19,734 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2022-11-23 14:09:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2022-11-23 14:09:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure resp_read_dt0 [2022-11-23 14:09:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_read_dt0 [2022-11-23 14:09:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 14:09:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure resp_disconnect_pg [2022-11-23 14:09:19,735 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_disconnect_pg [2022-11-23 14:09:19,735 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-23 14:09:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-23 14:09:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure dsense_show [2022-11-23 14:09:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure dsense_show [2022-11-23 14:09:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 14:09:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure resp_format_pg [2022-11-23 14:09:19,736 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_format_pg [2022-11-23 14:09:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-23 14:09:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-23 14:09:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure lba_to_map_index [2022-11-23 14:09:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure lba_to_map_index [2022-11-23 14:09:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sglist [2022-11-23 14:09:19,737 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sglist [2022-11-23 14:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-23 14:09:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-23 14:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_same [2022-11-23 14:09:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_same [2022-11-23 14:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-23 14:09:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-23 14:09:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-11-23 14:09:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-11-23 14:09:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure ndelay_show [2022-11-23 14:09:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ndelay_show [2022-11-23 14:09:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be64 [2022-11-23 14:09:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be64 [2022-11-23 14:09:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure resp_caching_pg [2022-11-23 14:09:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_caching_pg [2022-11-23 14:09:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 14:09:19,740 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 14:09:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_queuecommand [2022-11-23 14:09:19,741 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_queuecommand [2022-11-23 14:09:19,741 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-23 14:09:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-23 14:09:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-23 14:09:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-23 14:09:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_alloc [2022-11-23 14:09:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_alloc [2022-11-23 14:09:19,742 INFO L130 BoogieDeclarations]: Found specification of procedure resp_iec_m_pg [2022-11-23 14:09:19,742 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_iec_m_pg [2022-11-23 14:09:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 14:09:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_dt0 [2022-11-23 14:09:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_dt0 [2022-11-23 14:09:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_change_qdepth [2022-11-23 14:09:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_change_qdepth [2022-11-23 14:09:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_irqrestore [2022-11-23 14:09:19,743 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_irqrestore [2022-11-23 14:09:19,743 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 14:09:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 14:09:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_show_info [2022-11-23 14:09:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_show_info [2022-11-23 14:09:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure ptype_show [2022-11-23 14:09:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ptype_show [2022-11-23 14:09:19,744 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-23 14:09:19,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-23 14:09:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure root_device_unregister [2022-11-23 14:09:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure root_device_unregister [2022-11-23 14:09:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-23 14:09:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure unmap_region [2022-11-23 14:09:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure unmap_region [2022-11-23 14:09:19,745 INFO L130 BoogieDeclarations]: Found specification of procedure fake_rw_show [2022-11-23 14:09:19,745 INFO L138 BoogieDeclarations]: Found implementation of procedure fake_rw_show [2022-11-23 14:09:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-23 14:09:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-23 14:09:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-23 14:09:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-23 14:09:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-23 14:09:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-23 14:09:19,746 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_fld [2022-11-23 14:09:19,746 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_fld [2022-11-23 14:09:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-11-23 14:09:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-11-23 14:09:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 14:09:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure max_luns_show [2022-11-23 14:09:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure max_luns_show [2022-11-23 14:09:19,747 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2022-11-23 14:09:19,747 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2022-11-23 14:09:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-23 14:09:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-23 14:09:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2022-11-23 14:09:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2022-11-23 14:09:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure opts_show [2022-11-23 14:09:19,748 INFO L138 BoogieDeclarations]: Found implementation of procedure opts_show [2022-11-23 14:09:19,748 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 14:09:19,750 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-23 14:09:19,753 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-23 14:09:19,753 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:09:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-23 14:09:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure devInfoReg [2022-11-23 14:09:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure devInfoReg [2022-11-23 14:09:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure guard_show [2022-11-23 14:09:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure guard_show [2022-11-23 14:09:19,754 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_device_reset [2022-11-23 14:09:19,754 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_device_reset [2022-11-23 14:09:19,756 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2022-11-23 14:09:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2022-11-23 14:09:19,756 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2022-11-23 14:09:19,756 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2022-11-23 14:09:19,757 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-23 14:09:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-23 14:09:19,757 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_max_tgts_luns [2022-11-23 14:09:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_max_tgts_luns [2022-11-23 14:09:19,757 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_configure [2022-11-23 14:09:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_configure [2022-11-23 14:09:19,757 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be32 [2022-11-23 14:09:19,757 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be32 [2022-11-23 14:09:19,758 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bidi_cmnd [2022-11-23 14:09:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bidi_cmnd [2022-11-23 14:09:19,758 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-23 14:09:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-23 14:09:19,758 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-23 14:09:19,758 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-23 14:09:19,758 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2022-11-23 14:09:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2022-11-23 14:09:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure do_device_access [2022-11-23 14:09:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure do_device_access [2022-11-23 14:09:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure virtual_gb_show [2022-11-23 14:09:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure virtual_gb_show [2022-11-23 14:09:19,759 INFO L130 BoogieDeclarations]: Found specification of procedure vpd_use_hostno_show [2022-11-23 14:09:19,759 INFO L138 BoogieDeclarations]: Found implementation of procedure vpd_use_hostno_show [2022-11-23 14:09:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_target_reset [2022-11-23 14:09:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_target_reset [2022-11-23 14:09:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure dix_show [2022-11-23 14:09:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure dix_show [2022-11-23 14:09:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure every_nth_show [2022-11-23 14:09:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure every_nth_show [2022-11-23 14:09:19,760 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-23 14:09:19,760 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-23 14:09:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-11-23 14:09:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-11-23 14:09:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure clear_luns_changed_on_target [2022-11-23 14:09:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_luns_changed_on_target [2022-11-23 14:09:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sg_count [2022-11-23 14:09:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sg_count [2022-11-23 14:09:19,761 INFO L130 BoogieDeclarations]: Found specification of procedure ato_show [2022-11-23 14:09:19,761 INFO L138 BoogieDeclarations]: Found implementation of procedure ato_show [2022-11-23 14:09:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_buffer [2022-11-23 14:09:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_buffer [2022-11-23 14:09:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sha_m_spg [2022-11-23 14:09:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sha_m_spg [2022-11-23 14:09:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-23 14:09:19,762 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-23 14:09:19,762 INFO L130 BoogieDeclarations]: Found specification of procedure add_host_show [2022-11-23 14:09:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure add_host_show [2022-11-23 14:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_add_adapter [2022-11-23 14:09:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_add_adapter [2022-11-23 14:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_copy_to_buffer [2022-11-23 14:09:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_copy_to_buffer [2022-11-23 14:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-23 14:09:19,763 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-23 14:09:19,763 INFO L130 BoogieDeclarations]: Found specification of procedure dif_store [2022-11-23 14:09:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_store [2022-11-23 14:09:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:09:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 14:09:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_opcode [2022-11-23 14:09:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_opcode [2022-11-23 14:09:19,764 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-23 14:09:19,764 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-23 14:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_buffer [2022-11-23 14:09:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_buffer [2022-11-23 14:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_set_resid [2022-11-23 14:09:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_set_resid [2022-11-23 14:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2022-11-23 14:09:19,765 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2022-11-23 14:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 14:09:19,765 INFO L130 BoogieDeclarations]: Found specification of procedure delay_show [2022-11-23 14:09:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure delay_show [2022-11-23 14:09:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-23 14:09:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-23 14:09:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure get_sdebug_capacity [2022-11-23 14:09:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure get_sdebug_capacity [2022-11-23 14:09:19,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 14:09:19,766 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 14:09:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure resp_ctrl_m_pg [2022-11-23 14:09:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_ctrl_m_pg [2022-11-23 14:09:19,767 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-23 14:09:19,767 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-23 14:09:21,181 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 14:09:21,185 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 14:09:22,437 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-23 14:10:09,873 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 14:10:13,444 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 14:10:13,444 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-23 14:10:13,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:13 BoogieIcfgContainer [2022-11-23 14:10:13,452 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 14:10:13,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 14:10:13,454 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 14:10:13,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 14:10:13,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 02:09:13" (1/3) ... [2022-11-23 14:10:13,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1151e792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:13, skipping insertion in model container [2022-11-23 14:10:13,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 02:09:18" (2/3) ... [2022-11-23 14:10:13,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1151e792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 02:10:13, skipping insertion in model container [2022-11-23 14:10:13,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 02:10:13" (3/3) ... [2022-11-23 14:10:13,460 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-23 14:10:13,482 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 14:10:13,482 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 14:10:13,595 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 14:10:13,603 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;@759b23ca, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 14:10:13,603 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 14:10:13,619 INFO L276 IsEmpty]: Start isEmpty. Operand has 2826 states, 1840 states have (on average 1.4271739130434782) internal successors, (2626), 1927 states have internal predecessors, (2626), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) [2022-11-23 14:10:13,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2022-11-23 14:10:13,700 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:13,701 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:13,702 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:10:13,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:13,712 INFO L85 PathProgramCache]: Analyzing trace with hash -460469942, now seen corresponding path program 1 times [2022-11-23 14:10:13,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:13,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209885148] [2022-11-23 14:10:13,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:13,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:15,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:17,397 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-23 14:10:17,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:17,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209885148] [2022-11-23 14:10:17,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209885148] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:17,399 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:17,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:10:17,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372399087] [2022-11-23 14:10:17,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:17,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:10:17,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:17,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:10:17,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:10:17,468 INFO L87 Difference]: Start difference. First operand has 2826 states, 1840 states have (on average 1.4271739130434782) internal successors, (2626), 1927 states have internal predecessors, (2626), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-23 14:10:19,725 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:10:23,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:10:25,635 WARN L539 Checker$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 14:10:27,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:10:31,268 WARN L539 Checker$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 14:10:33,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:10:37,144 WARN L539 Checker$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 14:10:42,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:10:42,100 INFO L93 Difference]: Finished difference Result 8081 states and 12245 transitions. [2022-11-23 14:10:42,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:10:42,104 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 907 [2022-11-23 14:10:42,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:10:42,182 INFO L225 Difference]: With dead ends: 8081 [2022-11-23 14:10:42,183 INFO L226 Difference]: Without dead ends: 5295 [2022-11-23 14:10:42,208 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 14:10:42,215 INFO L413 NwaCegarLoop]: 4585 mSDtfsCounter, 3869 mSDsluCounter, 3870 mSDsCounter, 0 mSdLazyCounter, 740 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 8455 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 740 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.1s IncrementalHoareTripleChecker+Time [2022-11-23 14:10:42,219 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3875 Valid, 8455 Invalid, 748 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 740 Invalid, 7 Unknown, 0 Unchecked, 24.1s Time] [2022-11-23 14:10:42,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5295 states. [2022-11-23 14:10:42,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5295 to 5286. [2022-11-23 14:10:42,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5286 states, 3511 states have (on average 1.4186841355739106) internal successors, (4981), 3619 states have internal predecessors, (4981), 1469 states have call successors, (1469), 306 states have call predecessors, (1469), 305 states have return successors, (1469), 1440 states have call predecessors, (1469), 1467 states have call successors, (1469) [2022-11-23 14:10:42,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 7919 transitions. [2022-11-23 14:10:42,680 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 7919 transitions. Word has length 907 [2022-11-23 14:10:42,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:10:42,693 INFO L495 AbstractCegarLoop]: Abstraction has 5286 states and 7919 transitions. [2022-11-23 14:10:42,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-23 14:10:42,694 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 7919 transitions. [2022-11-23 14:10:42,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2022-11-23 14:10:42,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:10:42,748 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:10:42,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 14:10:42,749 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:10:42,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:10:42,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1153376826, now seen corresponding path program 1 times [2022-11-23 14:10:42,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:10:42,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118993035] [2022-11-23 14:10:42,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:10:42,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:10:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:10:44,919 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-23 14:10:44,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:10:44,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118993035] [2022-11-23 14:10:44,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118993035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:10:44,920 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:10:44,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:10:44,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431844777] [2022-11-23 14:10:44,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:10:44,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:10:44,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:10:44,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:10:44,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:10:44,927 INFO L87 Difference]: Start difference. First operand 5286 states and 7919 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-23 14:10:47,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.22s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:10:51,702 WARN L539 Checker$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 14:10:53,715 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:10:55,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:10:59,498 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:01,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:11:05,884 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:09,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:09,693 INFO L93 Difference]: Finished difference Result 15418 states and 23102 transitions. [2022-11-23 14:11:09,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:09,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 914 [2022-11-23 14:11:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:09,766 INFO L225 Difference]: With dead ends: 15418 [2022-11-23 14:11:09,766 INFO L226 Difference]: Without dead ends: 10293 [2022-11-23 14:11:09,788 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 14:11:09,789 INFO L413 NwaCegarLoop]: 4511 mSDtfsCounter, 3735 mSDsluCounter, 3761 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3741 SdHoareTripleChecker+Valid, 8272 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.3s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:09,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3741 Valid, 8272 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 736 Invalid, 7 Unknown, 0 Unchecked, 24.3s Time] [2022-11-23 14:11:09,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10293 states. [2022-11-23 14:11:10,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10293 to 10283. [2022-11-23 14:11:10,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10283 states, 6860 states have (on average 1.4246355685131196) internal successors, (9773), 7076 states have internal predecessors, (9773), 2817 states have call successors, (2817), 606 states have call predecessors, (2817), 605 states have return successors, (2821), 2758 states have call predecessors, (2821), 2815 states have call successors, (2821) [2022-11-23 14:11:10,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10283 states to 10283 states and 15411 transitions. [2022-11-23 14:11:10,300 INFO L78 Accepts]: Start accepts. Automaton has 10283 states and 15411 transitions. Word has length 914 [2022-11-23 14:11:10,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:10,303 INFO L495 AbstractCegarLoop]: Abstraction has 10283 states and 15411 transitions. [2022-11-23 14:11:10,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-23 14:11:10,304 INFO L276 IsEmpty]: Start isEmpty. Operand 10283 states and 15411 transitions. [2022-11-23 14:11:10,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2022-11-23 14:11:10,324 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:10,325 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:10,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 14:11:10,325 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:10,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:10,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1027126344, now seen corresponding path program 1 times [2022-11-23 14:11:10,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:10,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104865361] [2022-11-23 14:11:10,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:10,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:10,968 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:11:10,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [406210685] [2022-11-23 14:11:10,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:10,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:10,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:11:10,975 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:11:11,028 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 14:11:15,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:15,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 14442 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:11:15,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:11:21,611 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-23 14:11:21,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:11:21,612 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:21,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104865361] [2022-11-23 14:11:21,612 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:11:21,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [406210685] [2022-11-23 14:11:21,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [406210685] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:21,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:21,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:11:21,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470863212] [2022-11-23 14:11:21,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:21,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:21,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:21,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:21,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:21,617 INFO L87 Difference]: Start difference. First operand 10283 states and 15411 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2022-11-23 14:11:23,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:28,182 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:30,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:32,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:37,342 WARN L539 Checker$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 14:11:40,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:11:42,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:44,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:47,138 WARN L539 Checker$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 14:11:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:11:47,918 INFO L93 Difference]: Finished difference Result 19235 states and 28922 transitions. [2022-11-23 14:11:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:11:47,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 918 [2022-11-23 14:11:47,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:11:48,062 INFO L225 Difference]: With dead ends: 19235 [2022-11-23 14:11:48,063 INFO L226 Difference]: Without dead ends: 19231 [2022-11-23 14:11:48,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 916 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 14:11:48,076 INFO L413 NwaCegarLoop]: 4557 mSDtfsCounter, 3601 mSDsluCounter, 3341 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3605 SdHoareTripleChecker+Valid, 7898 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.8s IncrementalHoareTripleChecker+Time [2022-11-23 14:11:48,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3605 Valid, 7898 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 709 Invalid, 8 Unknown, 0 Unchecked, 25.8s Time] [2022-11-23 14:11:48,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19231 states. [2022-11-23 14:11:49,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19231 to 19085. [2022-11-23 14:11:49,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19085 states, 12877 states have (on average 1.4299137997980895) internal successors, (18413), 13250 states have internal predecessors, (18413), 5078 states have call successors, (5078), 1134 states have call predecessors, (5078), 1129 states have return successors, (5170), 4958 states have call predecessors, (5170), 5076 states have call successors, (5170) [2022-11-23 14:11:49,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19085 states to 19085 states and 28661 transitions. [2022-11-23 14:11:49,235 INFO L78 Accepts]: Start accepts. Automaton has 19085 states and 28661 transitions. Word has length 918 [2022-11-23 14:11:49,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:11:49,237 INFO L495 AbstractCegarLoop]: Abstraction has 19085 states and 28661 transitions. [2022-11-23 14:11:49,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2022-11-23 14:11:49,238 INFO L276 IsEmpty]: Start isEmpty. Operand 19085 states and 28661 transitions. [2022-11-23 14:11:49,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2022-11-23 14:11:49,252 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:11:49,253 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:49,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 14:11:49,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:11:49,479 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:11:49,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:11:49,480 INFO L85 PathProgramCache]: Analyzing trace with hash -630000355, now seen corresponding path program 1 times [2022-11-23 14:11:49,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:11:49,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1388476216] [2022-11-23 14:11:49,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:11:49,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:11:50,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:11:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-23 14:11:51,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:11:51,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1388476216] [2022-11-23 14:11:51,308 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1388476216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:11:51,308 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:11:51,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:11:51,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644353198] [2022-11-23 14:11:51,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:11:51,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:11:51,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:11:51,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:11:51,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:11:51,311 INFO L87 Difference]: Start difference. First operand 19085 states and 28661 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-23 14:11:53,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:11:59,645 WARN L539 Checker$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 14:12:01,663 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:12:03,744 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 14:12:06,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:12:10,510 WARN L539 Checker$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 14:12:13,324 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.56s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:12:15,361 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:12:15,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:15,857 INFO L93 Difference]: Finished difference Result 43491 states and 65032 transitions. [2022-11-23 14:12:15,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:12:15,858 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 936 [2022-11-23 14:12:15,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:15,982 INFO L225 Difference]: With dead ends: 43491 [2022-11-23 14:12:15,982 INFO L226 Difference]: Without dead ends: 24567 [2022-11-23 14:12:16,064 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 14:12:16,065 INFO L413 NwaCegarLoop]: 4061 mSDtfsCounter, 1168 mSDsluCounter, 3674 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 3 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 7735 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.9s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:16,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 7735 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 827 Invalid, 7 Unknown, 0 Unchecked, 23.9s Time] [2022-11-23 14:12:16,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24567 states. [2022-11-23 14:12:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24567 to 24563. [2022-11-23 14:12:17,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24563 states, 17007 states have (on average 1.4462868230728523) internal successors, (24597), 17506 states have internal predecessors, (24597), 5952 states have call successors, (5952), 1612 states have call predecessors, (5952), 1603 states have return successors, (6050), 5792 states have call predecessors, (6050), 5950 states have call successors, (6050) [2022-11-23 14:12:17,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24563 states to 24563 states and 36599 transitions. [2022-11-23 14:12:17,376 INFO L78 Accepts]: Start accepts. Automaton has 24563 states and 36599 transitions. Word has length 936 [2022-11-23 14:12:17,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:17,378 INFO L495 AbstractCegarLoop]: Abstraction has 24563 states and 36599 transitions. [2022-11-23 14:12:17,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-23 14:12:17,378 INFO L276 IsEmpty]: Start isEmpty. Operand 24563 states and 36599 transitions. [2022-11-23 14:12:17,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2022-11-23 14:12:17,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:17,391 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 21, 21, 20, 20, 20, 20, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:17,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 14:12:17,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:17,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:17,392 INFO L85 PathProgramCache]: Analyzing trace with hash -922942126, now seen corresponding path program 1 times [2022-11-23 14:12:17,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:17,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534537649] [2022-11-23 14:12:17,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:17,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:17,985 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:12:17,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1832110073] [2022-11-23 14:12:17,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:17,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:12:17,987 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:12:17,991 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:12:18,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-23 14:12:22,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:22,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 14747 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:12:22,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:12:28,529 INFO L134 CoverageAnalysis]: Checked inductivity of 17929 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17928 trivial. 0 not checked. [2022-11-23 14:12:28,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:12:28,530 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:28,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534537649] [2022-11-23 14:12:28,530 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:12:28,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832110073] [2022-11-23 14:12:28,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832110073] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:28,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:28,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:12:28,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128703389] [2022-11-23 14:12:28,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:28,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:12:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:28,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:12:28,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:12:28,534 INFO L87 Difference]: Start difference. First operand 24563 states and 36599 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 1 states have call predecessors, (88), 1 states have call successors, (88) [2022-11-23 14:12:30,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:12:34,236 WARN L539 Checker$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 14:12:35,887 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.65s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:12:38,078 WARN L539 Checker$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 14:12:41,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:12:43,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:12:45,642 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 14:12:46,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:12:46,200 INFO L93 Difference]: Finished difference Result 49127 states and 73117 transitions. [2022-11-23 14:12:46,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:12:46,201 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 1 states have call predecessors, (88), 1 states have call successors, (88) Word has length 943 [2022-11-23 14:12:46,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:12:46,420 INFO L225 Difference]: With dead ends: 49127 [2022-11-23 14:12:46,420 INFO L226 Difference]: Without dead ends: 24725 [2022-11-23 14:12:46,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 941 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 14:12:46,491 INFO L413 NwaCegarLoop]: 3775 mSDtfsCounter, 3785 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3789 SdHoareTripleChecker+Valid, 3841 SdHoareTripleChecker+Invalid, 380 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:12:46,492 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3789 Valid, 3841 Invalid, 380 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 374 Invalid, 6 Unknown, 0 Unchecked, 17.0s Time] [2022-11-23 14:12:46,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24725 states. [2022-11-23 14:12:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24725 to 24725. [2022-11-23 14:12:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24725 states, 17085 states have (on average 1.4434299092771437) internal successors, (24661), 17592 states have internal predecessors, (24661), 5986 states have call successors, (5986), 1654 states have call predecessors, (5986), 1653 states have return successors, (6102), 5826 states have call predecessors, (6102), 5984 states have call successors, (6102) [2022-11-23 14:12:47,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24725 states to 24725 states and 36749 transitions. [2022-11-23 14:12:47,817 INFO L78 Accepts]: Start accepts. Automaton has 24725 states and 36749 transitions. Word has length 943 [2022-11-23 14:12:47,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:12:47,818 INFO L495 AbstractCegarLoop]: Abstraction has 24725 states and 36749 transitions. [2022-11-23 14:12:47,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 1 states have call predecessors, (88), 1 states have call successors, (88) [2022-11-23 14:12:47,819 INFO L276 IsEmpty]: Start isEmpty. Operand 24725 states and 36749 transitions. [2022-11-23 14:12:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 985 [2022-11-23 14:12:47,836 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:12:47,837 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 59, 59, 59, 59, 59, 59, 20, 20, 20, 20, 20, 20, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:12:47,883 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-23 14:12:48,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:12:48,052 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:12:48,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:12:48,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1841131059, now seen corresponding path program 1 times [2022-11-23 14:12:48,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:12:48,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594625536] [2022-11-23 14:12:48,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:12:48,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:12:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:12:50,210 INFO L134 CoverageAnalysis]: Checked inductivity of 18459 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18452 trivial. 0 not checked. [2022-11-23 14:12:50,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:12:50,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594625536] [2022-11-23 14:12:50,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594625536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:12:50,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:12:50,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:12:50,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618015217] [2022-11-23 14:12:50,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:12:50,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:12:50,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:12:50,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:12:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:12:50,215 INFO L87 Difference]: Start difference. First operand 24725 states and 36749 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-23 14:12:52,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:12:58,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:00,920 WARN L539 Checker$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 14:13:03,881 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:09,417 WARN L539 Checker$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 14:13:12,858 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:14,904 WARN L539 Checker$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 14:13:16,434 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.53s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:17,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:13:17,320 INFO L93 Difference]: Finished difference Result 73105 states and 108670 transitions. [2022-11-23 14:13:17,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:13:17,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 984 [2022-11-23 14:13:17,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:13:17,558 INFO L225 Difference]: With dead ends: 73105 [2022-11-23 14:13:17,559 INFO L226 Difference]: Without dead ends: 48541 [2022-11-23 14:13:17,644 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 14:13:17,644 INFO L413 NwaCegarLoop]: 6342 mSDtfsCounter, 3745 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3751 SdHoareTripleChecker+Valid, 10093 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.5s IncrementalHoareTripleChecker+Time [2022-11-23 14:13:17,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3751 Valid, 10093 Invalid, 966 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1 Valid, 959 Invalid, 6 Unknown, 0 Unchecked, 25.5s Time] [2022-11-23 14:13:17,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48541 states. [2022-11-23 14:13:20,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48541 to 48529. [2022-11-23 14:13:20,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48529 states, 33565 states have (on average 1.4442723074631312) internal successors, (48477), 34536 states have internal predecessors, (48477), 11710 states have call successors, (11710), 3254 states have call predecessors, (11710), 3253 states have return successors, (11946), 11402 states have call predecessors, (11946), 11708 states have call successors, (11946) [2022-11-23 14:13:20,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48529 states to 48529 states and 72133 transitions. [2022-11-23 14:13:20,472 INFO L78 Accepts]: Start accepts. Automaton has 48529 states and 72133 transitions. Word has length 984 [2022-11-23 14:13:20,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:13:20,473 INFO L495 AbstractCegarLoop]: Abstraction has 48529 states and 72133 transitions. [2022-11-23 14:13:20,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-23 14:13:20,473 INFO L276 IsEmpty]: Start isEmpty. Operand 48529 states and 72133 transitions. [2022-11-23 14:13:20,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2022-11-23 14:13:20,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:13:20,528 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:20,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 14:13:20,528 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:13:20,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:13:20,529 INFO L85 PathProgramCache]: Analyzing trace with hash -317254377, now seen corresponding path program 1 times [2022-11-23 14:13:20,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:13:20,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649893885] [2022-11-23 14:13:20,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:20,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:13:21,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:13:23,707 INFO L134 CoverageAnalysis]: Checked inductivity of 30633 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30615 trivial. 0 not checked. [2022-11-23 14:13:23,714 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:13:23,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649893885] [2022-11-23 14:13:23,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649893885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:13:23,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:13:23,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:13:23,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613231046] [2022-11-23 14:13:23,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:13:23,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:13:23,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:13:23,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:13:23,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:13:23,717 INFO L87 Difference]: Start difference. First operand 48529 states and 72133 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-11-23 14:13:25,868 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:33,238 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:35,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:37,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:38,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.33s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:40,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:45,875 WARN L539 Checker$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 14:13:49,287 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:51,326 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:13:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:13:52,133 INFO L93 Difference]: Finished difference Result 96993 states and 144155 transitions. [2022-11-23 14:13:52,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:13:52,134 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 1230 [2022-11-23 14:13:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:13:52,401 INFO L225 Difference]: With dead ends: 96993 [2022-11-23 14:13:52,402 INFO L226 Difference]: Without dead ends: 48529 [2022-11-23 14:13:52,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:13:52,660 INFO L413 NwaCegarLoop]: 3762 mSDtfsCounter, 3 mSDsluCounter, 7513 mSDsCounter, 0 mSdLazyCounter, 1083 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11275 SdHoareTripleChecker+Invalid, 1097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1083 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:13:52,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11275 Invalid, 1097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1083 Invalid, 7 Unknown, 0 Unchecked, 26.7s Time] [2022-11-23 14:13:52,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48529 states. [2022-11-23 14:13:54,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48529 to 48529. [2022-11-23 14:13:54,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48529 states, 33565 states have (on average 1.4375986891106807) internal successors, (48253), 34536 states have internal predecessors, (48253), 11710 states have call successors, (11710), 3254 states have call predecessors, (11710), 3253 states have return successors, (11946), 11402 states have call predecessors, (11946), 11708 states have call successors, (11946) [2022-11-23 14:13:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48529 states to 48529 states and 71909 transitions. [2022-11-23 14:13:54,809 INFO L78 Accepts]: Start accepts. Automaton has 48529 states and 71909 transitions. Word has length 1230 [2022-11-23 14:13:54,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:13:54,811 INFO L495 AbstractCegarLoop]: Abstraction has 48529 states and 71909 transitions. [2022-11-23 14:13:54,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-11-23 14:13:54,811 INFO L276 IsEmpty]: Start isEmpty. Operand 48529 states and 71909 transitions. [2022-11-23 14:13:54,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1251 [2022-11-23 14:13:54,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:13:54,874 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:13:54,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 14:13:54,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:13:54,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:13:54,875 INFO L85 PathProgramCache]: Analyzing trace with hash 537129633, now seen corresponding path program 1 times [2022-11-23 14:13:54,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:13:54,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173187325] [2022-11-23 14:13:54,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:54,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:13:55,834 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:13:55,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1843656130] [2022-11-23 14:13:55,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:13:55,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:13:55,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:13:55,839 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:13:55,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-23 14:14:00,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:00,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 16491 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:14:00,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:00,560 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11050 proven. 0 refuted. 0 times theorem prover too weak. 19595 trivial. 0 not checked. [2022-11-23 14:14:00,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:14:00,561 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:00,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173187325] [2022-11-23 14:14:00,561 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:14:00,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843656130] [2022-11-23 14:14:00,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843656130] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:00,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:00,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 14:14:00,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956489193] [2022-11-23 14:14:00,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:00,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 14:14:00,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:00,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 14:14:00,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 14:14:00,564 INFO L87 Difference]: Start difference. First operand 48529 states and 71909 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-23 14:14:02,763 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:14:10,380 WARN L539 Checker$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 14:14:12,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:14:14,559 WARN L539 Checker$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 14:14:20,906 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:14:24,316 WARN L539 Checker$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 14:14:27,092 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:14:28,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:14:28,024 INFO L93 Difference]: Finished difference Result 96945 states and 143643 transitions. [2022-11-23 14:14:28,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 14:14:28,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 1250 [2022-11-23 14:14:28,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:14:28,230 INFO L225 Difference]: With dead ends: 96945 [2022-11-23 14:14:28,231 INFO L226 Difference]: Without dead ends: 48529 [2022-11-23 14:14:28,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1247 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-23 14:14:28,375 INFO L413 NwaCegarLoop]: 3755 mSDtfsCounter, 3 mSDsluCounter, 7506 mSDsCounter, 0 mSdLazyCounter, 1082 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11261 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1082 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.7s IncrementalHoareTripleChecker+Time [2022-11-23 14:14:28,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11261 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1082 Invalid, 7 Unknown, 0 Unchecked, 25.7s Time] [2022-11-23 14:14:28,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48529 states. [2022-11-23 14:14:30,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48529 to 48529. [2022-11-23 14:14:30,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48529 states, 33565 states have (on average 1.4371220020855058) internal successors, (48237), 34536 states have internal predecessors, (48237), 11710 states have call successors, (11710), 3254 states have call predecessors, (11710), 3253 states have return successors, (11946), 11402 states have call predecessors, (11946), 11708 states have call successors, (11946) [2022-11-23 14:14:30,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48529 states to 48529 states and 71893 transitions. [2022-11-23 14:14:30,636 INFO L78 Accepts]: Start accepts. Automaton has 48529 states and 71893 transitions. Word has length 1250 [2022-11-23 14:14:30,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:14:30,637 INFO L495 AbstractCegarLoop]: Abstraction has 48529 states and 71893 transitions. [2022-11-23 14:14:30,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-23 14:14:30,637 INFO L276 IsEmpty]: Start isEmpty. Operand 48529 states and 71893 transitions. [2022-11-23 14:14:30,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2022-11-23 14:14:30,676 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:14:30,677 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:14:30,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-11-23 14:14:30,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-23 14:14:30,880 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:14:30,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:14:30,880 INFO L85 PathProgramCache]: Analyzing trace with hash -2106993807, now seen corresponding path program 1 times [2022-11-23 14:14:30,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:14:30,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377796360] [2022-11-23 14:14:30,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:30,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:14:31,671 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:14:31,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [101632934] [2022-11-23 14:14:31,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:14:31,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:14:31,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:14:31,673 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:14:31,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-23 14:14:35,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:14:36,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 16510 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-23 14:14:36,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:14:42,397 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11038 proven. 0 refuted. 0 times theorem prover too weak. 19607 trivial. 0 not checked. [2022-11-23 14:14:42,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:14:42,397 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:14:42,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377796360] [2022-11-23 14:14:42,398 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:14:42,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [101632934] [2022-11-23 14:14:42,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [101632934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:14:42,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:14:42,399 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-23 14:14:42,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174890645] [2022-11-23 14:14:42,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:14:42,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:14:42,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:14:42,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:14:42,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:14:42,401 INFO L87 Difference]: Start difference. First operand 48529 states and 71893 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-23 14:14:44,599 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:14:51,094 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:14:53,113 WARN L539 Checker$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 14:14:55,879 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:00,772 WARN L539 Checker$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 14:15:03,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:05,999 WARN L539 Checker$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 14:15:07,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:15:07,190 INFO L93 Difference]: Finished difference Result 143847 states and 213338 transitions. [2022-11-23 14:15:07,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:15:07,191 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 1257 [2022-11-23 14:15:07,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:15:07,733 INFO L225 Difference]: With dead ends: 143847 [2022-11-23 14:15:07,733 INFO L226 Difference]: Without dead ends: 95479 [2022-11-23 14:15:07,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1255 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 14:15:07,896 INFO L413 NwaCegarLoop]: 4461 mSDtfsCounter, 3778 mSDsluCounter, 3503 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3784 SdHoareTripleChecker+Valid, 7964 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.6s IncrementalHoareTripleChecker+Time [2022-11-23 14:15:07,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3784 Valid, 7964 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 728 Invalid, 6 Unknown, 0 Unchecked, 21.6s Time] [2022-11-23 14:15:07,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95479 states. [2022-11-23 14:15:11,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95479 to 95447. [2022-11-23 14:15:11,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95447 states, 66215 states have (on average 1.439266027335196) internal successors, (95301), 68036 states have internal predecessors, (95301), 22842 states have call successors, (22842), 6390 states have call predecessors, (22842), 6389 states have return successors, (23302), 22280 states have call predecessors, (23302), 22840 states have call successors, (23302) [2022-11-23 14:15:12,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95447 states to 95447 states and 141445 transitions. [2022-11-23 14:15:12,413 INFO L78 Accepts]: Start accepts. Automaton has 95447 states and 141445 transitions. Word has length 1257 [2022-11-23 14:15:12,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:15:12,415 INFO L495 AbstractCegarLoop]: Abstraction has 95447 states and 141445 transitions. [2022-11-23 14:15:12,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-23 14:15:12,415 INFO L276 IsEmpty]: Start isEmpty. Operand 95447 states and 141445 transitions. [2022-11-23 14:15:12,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1276 [2022-11-23 14:15:12,470 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:15:12,471 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 21, 21, 20, 20, 20, 20, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:12,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-23 14:15:12,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:15:12,673 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:15:12,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:15:12,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1685916446, now seen corresponding path program 1 times [2022-11-23 14:15:12,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:15:12,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622761377] [2022-11-23 14:15:12,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:15:12,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:15:13,437 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:15:13,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1243221034] [2022-11-23 14:15:13,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:15:13,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:15:13,438 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:15:13,439 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:15:13,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-23 14:15:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 14:15:17,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 16589 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-23 14:15:17,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 14:15:18,439 INFO L134 CoverageAnalysis]: Checked inductivity of 30724 backedges. 802 proven. 0 refuted. 0 times theorem prover too weak. 29922 trivial. 0 not checked. [2022-11-23 14:15:18,439 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-23 14:15:18,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-23 14:15:18,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622761377] [2022-11-23 14:15:18,440 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-23 14:15:18,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243221034] [2022-11-23 14:15:18,440 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243221034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 14:15:18,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 14:15:18,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 14:15:18,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875764778] [2022-11-23 14:15:18,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 14:15:18,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 14:15:18,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-23 14:15:18,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 14:15:18,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 14:15:18,444 INFO L87 Difference]: Start difference. First operand 95447 states and 141445 transitions. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 3 states have call successors, (125), 3 states have call predecessors, (125), 3 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2022-11-23 14:15:20,651 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:27,959 WARN L539 Checker$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 14:15:29,976 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:32,986 WARN L539 Checker$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 14:15:40,166 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:43,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:44,322 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:46,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-23 14:15:48,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 14:15:48,525 INFO L93 Difference]: Finished difference Result 263200 states and 390865 transitions. [2022-11-23 14:15:48,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 14:15:48,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 3 states have call successors, (125), 3 states have call predecessors, (125), 3 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) Word has length 1275 [2022-11-23 14:15:48,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 14:15:49,547 INFO L225 Difference]: With dead ends: 263200 [2022-11-23 14:15:49,547 INFO L226 Difference]: Without dead ends: 167914 [2022-11-23 14:15:49,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1274 GetRequests, 1273 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 14:15:49,819 INFO L413 NwaCegarLoop]: 4408 mSDtfsCounter, 3680 mSDsluCounter, 3621 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 46 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3686 SdHoareTripleChecker+Valid, 8029 SdHoareTripleChecker+Invalid, 875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-23 14:15:49,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3686 Valid, 8029 Invalid, 875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 823 Invalid, 6 Unknown, 0 Unchecked, 24.0s Time] [2022-11-23 14:15:49,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167914 states. [2022-11-23 14:15:57,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167914 to 167906. [2022-11-23 14:15:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167906 states, 115542 states have (on average 1.4327950009520347) internal successors, (165548), 118708 states have internal predecessors, (165548), 41422 states have call successors, (41422), 10926 states have call predecessors, (41422), 10941 states have return successors, (42234), 40419 states have call predecessors, (42234), 41420 states have call successors, (42234) [2022-11-23 14:15:58,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167906 states to 167906 states and 249204 transitions. [2022-11-23 14:15:58,782 INFO L78 Accepts]: Start accepts. Automaton has 167906 states and 249204 transitions. Word has length 1275 [2022-11-23 14:15:58,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 14:15:58,784 INFO L495 AbstractCegarLoop]: Abstraction has 167906 states and 249204 transitions. [2022-11-23 14:15:58,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 3 states have call successors, (125), 3 states have call predecessors, (125), 3 states have return successors, (119), 3 states have call predecessors, (119), 3 states have call successors, (119) [2022-11-23 14:15:58,784 INFO L276 IsEmpty]: Start isEmpty. Operand 167906 states and 249204 transitions. [2022-11-23 14:15:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2022-11-23 14:15:58,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 14:15:58,834 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 21, 21, 20, 20, 20, 20, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:15:58,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-23 14:15:59,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-23 14:15:59,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 14:15:59,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 14:15:59,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1832574485, now seen corresponding path program 1 times [2022-11-23 14:15:59,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-23 14:15:59,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669573494] [2022-11-23 14:15:59,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:15:59,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 14:15:59,579 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-23 14:15:59,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [945251385] [2022-11-23 14:15:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 14:15:59,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 14:15:59,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 [2022-11-23 14:15:59,583 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 14:15:59,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_eaf54573-8472-4ddc-83ab-51609c88069c/bin/utaipan-Q6hlc19bkW/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process