./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba --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 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e --- 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-b5237d8 [2022-11-22 01:47:52,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 01:47:52,585 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 01:47:52,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 01:47:52,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 01:47:52,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 01:47:52,631 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 01:47:52,633 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 01:47:52,634 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 01:47:52,635 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 01:47:52,636 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 01:47:52,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 01:47:52,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 01:47:52,638 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 01:47:52,639 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 01:47:52,640 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 01:47:52,643 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 01:47:52,644 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 01:47:52,647 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 01:47:52,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 01:47:52,655 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 01:47:52,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 01:47:52,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 01:47:52,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 01:47:52,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 01:47:52,670 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 01:47:52,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 01:47:52,672 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 01:47:52,673 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 01:47:52,673 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 01:47:52,674 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 01:47:52,675 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 01:47:52,676 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 01:47:52,677 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 01:47:52,679 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 01:47:52,679 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 01:47:52,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 01:47:52,680 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 01:47:52,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 01:47:52,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 01:47:52,682 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 01:47:52,683 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-22 01:47:52,716 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 01:47:52,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 01:47:52,717 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 01:47:52,717 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 01:47:52,718 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 01:47:52,718 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 01:47:52,718 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 01:47:52,718 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 01:47:52,718 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 01:47:52,719 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 01:47:52,719 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 01:47:52,719 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 01:47:52,719 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 01:47:52,719 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 01:47:52,719 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 01:47:52,720 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 01:47:52,720 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 01:47:52,720 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 01:47:52,721 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 01:47:52,721 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 01:47:52,721 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 01:47:52,721 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 01:47:52,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 01:47:52,721 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 01:47:52,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 01:47:52,725 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 01:47:52,725 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 01:47:52,725 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 01:47:52,726 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 01:47:52,726 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:47:52,727 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 01:47:52,727 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 01:47:52,727 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 01:47:52,727 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 01:47:52,727 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 01:47:52,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 01:47:52,728 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 01:47:52,729 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 01:47:52,729 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_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6063bfeeaa4a025ac67d1a7a9b5cc20b489e34fc9db0d4dd9fcdda86c75b9c5e [2022-11-22 01:47:53,006 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 01:47:53,030 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 01:47:53,034 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 01:47:53,035 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 01:47:53,036 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 01:47:53,038 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-22 01:47:56,078 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 01:47:56,635 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 01:47:56,638 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-22 01:47:56,677 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/data/cb8573fcb/bbd1e475ebf14e818a7a63e1fc790aa2/FLAGc04d2c407 [2022-11-22 01:47:56,697 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/data/cb8573fcb/bbd1e475ebf14e818a7a63e1fc790aa2 [2022-11-22 01:47:56,700 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 01:47:56,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 01:47:56,705 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 01:47:56,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 01:47:56,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 01:47:56,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:47:56" (1/1) ... [2022-11-22 01:47:56,711 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f38ab7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:56, skipping insertion in model container [2022-11-22 01:47:56,711 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:47:56" (1/1) ... [2022-11-22 01:47:56,719 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 01:47:56,857 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 01:47:57,548 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_5c5a2adc-3f38-40b4-aa01-fe84615eb729/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-22 01:47:58,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:47:58,290 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 01:47:58,405 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_5c5a2adc-3f38-40b4-aa01-fe84615eb729/sv-benchmarks/c/ldv-validator-v0.6/linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i[139152,139165] [2022-11-22 01:47:58,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 01:47:58,782 INFO L208 MainTranslator]: Completed translation [2022-11-22 01:47:58,783 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58 WrapperNode [2022-11-22 01:47:58,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 01:47:58,784 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 01:47:58,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 01:47:58,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 01:47:58,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:58,877 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,009 INFO L138 Inliner]: procedures = 184, calls = 828, calls flagged for inlining = 92, calls inlined = 90, statements flattened = 3180 [2022-11-22 01:47:59,009 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 01:47:59,010 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 01:47:59,010 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 01:47:59,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 01:47:59,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,034 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,035 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,147 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,158 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,180 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,213 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 01:47:59,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 01:47:59,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 01:47:59,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 01:47:59,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (1/1) ... [2022-11-22 01:47:59,222 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 01:47:59,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:47:59,249 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 01:47:59,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 01:47:59,296 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int_nonpositive [2022-11-22 01:47:59,296 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int_nonpositive [2022-11-22 01:47:59,296 INFO L130 BoogieDeclarations]: Found specification of procedure sl_tx_timeout [2022-11-22 01:47:59,297 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_tx_timeout [2022-11-22 01:47:59,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-22 01:47:59,297 INFO L130 BoogieDeclarations]: Found specification of procedure __xchg_wrong_size [2022-11-22 01:47:59,297 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-11-22 01:47:59,297 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-11-22 01:47:59,297 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-22 01:47:59,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-22 01:47:59,297 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-22 01:47:59,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-22 01:47:59,298 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 01:47:59,298 INFO L130 BoogieDeclarations]: Found specification of procedure netif_tx_start_queue [2022-11-22 01:47:59,298 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_tx_start_queue [2022-11-22 01:47:59,298 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-22 01:47:59,298 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-22 01:47:59,298 INFO L130 BoogieDeclarations]: Found specification of procedure slhc_free [2022-11-22 01:47:59,298 INFO L138 BoogieDeclarations]: Found implementation of procedure slhc_free [2022-11-22 01:47:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-22 01:47:59,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-22 01:47:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2022-11-22 01:47:59,299 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2022-11-22 01:47:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-22 01:47:59,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-22 01:47:59,299 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-22 01:47:59,299 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-22 01:47:59,300 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-11-22 01:47:59,300 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-11-22 01:47:59,300 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-22 01:47:59,300 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-22 01:47:59,300 INFO L130 BoogieDeclarations]: Found specification of procedure sl_free_bufs [2022-11-22 01:47:59,300 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_free_bufs [2022-11-22 01:47:59,300 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 01:47:59,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-22 01:47:59,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-22 01:47:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-22 01:47:59,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-22 01:47:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-22 01:47:59,301 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-22 01:47:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-22 01:47:59,301 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-22 01:47:59,301 INFO L130 BoogieDeclarations]: Found specification of procedure netif_stop_queue [2022-11-22 01:47:59,301 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_stop_queue [2022-11-22 01:47:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer [2022-11-22 01:47:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer [2022-11-22 01:47:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-22 01:47:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-22 01:47:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-22 01:47:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure sl_bump [2022-11-22 01:47:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_bump [2022-11-22 01:47:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure slip_ioctl [2022-11-22 01:47:59,303 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_ioctl [2022-11-22 01:47:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 01:47:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure consume_skb [2022-11-22 01:47:59,303 INFO L138 BoogieDeclarations]: Found implementation of procedure consume_skb [2022-11-22 01:47:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure slip_close [2022-11-22 01:47:59,303 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_close [2022-11-22 01:47:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 01:47:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 01:47:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-22 01:47:59,304 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-22 01:47:59,304 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-22 01:47:59,304 INFO L130 BoogieDeclarations]: Found specification of procedure slip_compat_ioctl [2022-11-22 01:47:59,304 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_compat_ioctl [2022-11-22 01:47:59,304 INFO L130 BoogieDeclarations]: Found specification of procedure netif_running [2022-11-22 01:47:59,304 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_running [2022-11-22 01:47:59,304 INFO L130 BoogieDeclarations]: Found specification of procedure sl_get_stats64 [2022-11-22 01:47:59,304 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_get_stats64 [2022-11-22 01:47:59,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-22 01:47:59,305 INFO L130 BoogieDeclarations]: Found specification of procedure add_timer [2022-11-22 01:47:59,305 INFO L138 BoogieDeclarations]: Found implementation of procedure add_timer [2022-11-22 01:47:59,305 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 01:47:59,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-11-22 01:47:59,305 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-11-22 01:47:59,305 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-11-22 01:47:59,305 INFO L130 BoogieDeclarations]: Found specification of procedure sl_ioctl [2022-11-22 01:47:59,305 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_ioctl [2022-11-22 01:47:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure tty_hangup [2022-11-22 01:47:59,306 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_hangup [2022-11-22 01:47:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 01:47:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure netif_queue_stopped [2022-11-22 01:47:59,306 INFO L138 BoogieDeclarations]: Found implementation of procedure netif_queue_stopped [2022-11-22 01:47:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-22 01:47:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure tty_devnum [2022-11-22 01:47:59,306 INFO L138 BoogieDeclarations]: Found implementation of procedure tty_devnum [2022-11-22 01:47:59,306 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-22 01:47:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-22 01:47:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure slip_hangup [2022-11-22 01:47:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure slip_hangup [2022-11-22 01:47:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-22 01:47:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-22 01:47:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-22 01:47:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-22 01:47:59,307 INFO L130 BoogieDeclarations]: Found specification of procedure sl_change_mtu [2022-11-22 01:47:59,307 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_change_mtu [2022-11-22 01:47:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-11-22 01:47:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-11-22 01:47:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-11-22 01:47:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-11-22 01:47:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_get_tx_queue [2022-11-22 01:47:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_get_tx_queue [2022-11-22 01:47:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-22 01:47:59,308 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-22 01:47:59,308 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-22 01:47:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-22 01:47:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 01:47:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-11-22 01:47:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-11-22 01:47:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-22 01:47:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-22 01:47:59,309 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_netdev [2022-11-22 01:47:59,309 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_netdev [2022-11-22 01:47:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-22 01:47:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-22 01:47:59,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-22 01:47:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 01:47:59,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 01:47:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure sl_unlock [2022-11-22 01:47:59,310 INFO L138 BoogieDeclarations]: Found implementation of procedure sl_unlock [2022-11-22 01:47:59,310 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-11-22 01:47:59,310 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-11-22 01:48:00,057 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 01:48:00,060 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 01:48:00,268 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-22 01:48:03,019 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 01:48:04,152 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 01:48:04,152 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 01:48:04,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:04 BoogieIcfgContainer [2022-11-22 01:48:04,158 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 01:48:04,161 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 01:48:04,161 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 01:48:04,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 01:48:04,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:47:56" (1/3) ... [2022-11-22 01:48:04,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a0200c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:04, skipping insertion in model container [2022-11-22 01:48:04,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:47:58" (2/3) ... [2022-11-22 01:48:04,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79a0200c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:48:04, skipping insertion in model container [2022-11-22 01:48:04,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:48:04" (3/3) ... [2022-11-22 01:48:04,172 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-stable-1b0b0ac-1-108_1a-drivers--net--slip.ko-entry_point.cil.out.i [2022-11-22 01:48:04,191 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 01:48:04,191 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 01:48:04,278 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 01:48:04,284 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;@4f34de17, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 01:48:04,284 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 01:48:04,291 INFO L276 IsEmpty]: Start isEmpty. Operand has 770 states, 488 states have (on average 1.4057377049180328) internal successors, (686), 521 states have internal predecessors, (686), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) [2022-11-22 01:48:04,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-11-22 01:48:04,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:04,321 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 01:48:04,322 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:04,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:04,328 INFO L85 PathProgramCache]: Analyzing trace with hash -480572475, now seen corresponding path program 1 times [2022-11-22 01:48:04,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:04,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747789709] [2022-11-22 01:48:04,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:04,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:04,840 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-22 01:48:04,841 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:04,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747789709] [2022-11-22 01:48:04,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747789709] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:04,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:04,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:48:04,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889256039] [2022-11-22 01:48:04,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:04,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:48:04,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:04,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:48:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:48:04,895 INFO L87 Difference]: Start difference. First operand has 770 states, 488 states have (on average 1.4057377049180328) internal successors, (686), 521 states have internal predecessors, (686), 229 states have call successors, (229), 52 states have call predecessors, (229), 51 states have return successors, (224), 222 states have call predecessors, (224), 224 states have call successors, (224) Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-22 01:48:06,680 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 [] [2022-11-22 01:48:08,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:08,093 INFO L93 Difference]: Finished difference Result 1967 states and 2884 transitions. [2022-11-22 01:48:08,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:48:08,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 60 [2022-11-22 01:48:08,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:08,117 INFO L225 Difference]: With dead ends: 1967 [2022-11-22 01:48:08,117 INFO L226 Difference]: Without dead ends: 1150 [2022-11-22 01:48:08,125 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 [2022-11-22 01:48:08,127 INFO L413 NwaCegarLoop]: 1133 mSDtfsCounter, 641 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 304 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:08,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 2085 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 304 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 01:48:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-11-22 01:48:08,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150. [2022-11-22 01:48:08,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 728 states have (on average 1.3736263736263736) internal successors, (1000), 761 states have internal predecessors, (1000), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-22 01:48:08,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1665 transitions. [2022-11-22 01:48:08,298 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1665 transitions. Word has length 60 [2022-11-22 01:48:08,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:08,299 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1665 transitions. [2022-11-22 01:48:08,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-22 01:48:08,299 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1665 transitions. [2022-11-22 01:48:08,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-22 01:48:08,308 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:08,308 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-22 01:48:08,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 01:48:08,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:08,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:08,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1306594495, now seen corresponding path program 1 times [2022-11-22 01:48:08,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:08,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254206301] [2022-11-22 01:48:08,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:08,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:08,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:08,611 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-22 01:48:08,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:08,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254206301] [2022-11-22 01:48:08,612 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254206301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:08,612 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:08,612 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:48:08,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381247263] [2022-11-22 01:48:08,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:08,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:48:08,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:08,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:48:08,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:48:08,615 INFO L87 Difference]: Start difference. First operand 1150 states and 1665 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 01:48:09,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:48:11,785 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:48:13,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:13,125 INFO L93 Difference]: Finished difference Result 2283 states and 3305 transitions. [2022-11-22 01:48:13,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:48:13,127 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 94 [2022-11-22 01:48:13,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:13,138 INFO L225 Difference]: With dead ends: 2283 [2022-11-22 01:48:13,138 INFO L226 Difference]: Without dead ends: 1150 [2022-11-22 01:48:13,143 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:48:13,145 INFO L413 NwaCegarLoop]: 955 mSDtfsCounter, 1 mSDsluCounter, 1905 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:13,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 2860 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 396 Invalid, 1 Unknown, 0 Unchecked, 4.4s Time] [2022-11-22 01:48:13,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1150 states. [2022-11-22 01:48:13,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1150 to 1150. [2022-11-22 01:48:13,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1150 states, 728 states have (on average 1.370879120879121) internal successors, (998), 761 states have internal predecessors, (998), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-22 01:48:13,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1150 states to 1150 states and 1663 transitions. [2022-11-22 01:48:13,243 INFO L78 Accepts]: Start accepts. Automaton has 1150 states and 1663 transitions. Word has length 94 [2022-11-22 01:48:13,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:13,246 INFO L495 AbstractCegarLoop]: Abstraction has 1150 states and 1663 transitions. [2022-11-22 01:48:13,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-22 01:48:13,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1150 states and 1663 transitions. [2022-11-22 01:48:13,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-22 01:48:13,251 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:13,252 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-22 01:48:13,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 01:48:13,255 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:13,265 INFO L85 PathProgramCache]: Analyzing trace with hash -885451734, now seen corresponding path program 1 times [2022-11-22 01:48:13,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:13,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166786199] [2022-11-22 01:48:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:13,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:13,607 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-22 01:48:13,607 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:13,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166786199] [2022-11-22 01:48:13,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166786199] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:13,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:13,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:48:13,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270162099] [2022-11-22 01:48:13,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:13,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:48:13,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:13,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:48:13,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:48:13,610 INFO L87 Difference]: Start difference. First operand 1150 states and 1663 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-22 01:48:16,439 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 [] [2022-11-22 01:48:17,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:17,982 INFO L93 Difference]: Finished difference Result 1627 states and 2443 transitions. [2022-11-22 01:48:17,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 01:48:17,983 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 96 [2022-11-22 01:48:17,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:17,993 INFO L225 Difference]: With dead ends: 1627 [2022-11-22 01:48:18,006 INFO L226 Difference]: Without dead ends: 1624 [2022-11-22 01:48:18,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:48:18,008 INFO L413 NwaCegarLoop]: 1450 mSDtfsCounter, 607 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 141 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 3643 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:18,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 3643 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 457 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-11-22 01:48:18,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2022-11-22 01:48:18,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1152. [2022-11-22 01:48:18,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1152 states, 730 states have (on average 1.36986301369863) internal successors, (1000), 763 states have internal predecessors, (1000), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-22 01:48:18,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1665 transitions. [2022-11-22 01:48:18,111 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1665 transitions. Word has length 96 [2022-11-22 01:48:18,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:18,113 INFO L495 AbstractCegarLoop]: Abstraction has 1152 states and 1665 transitions. [2022-11-22 01:48:18,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2022-11-22 01:48:18,114 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1665 transitions. [2022-11-22 01:48:18,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-22 01:48:18,121 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:18,121 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-22 01:48:18,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 01:48:18,122 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:18,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:18,123 INFO L85 PathProgramCache]: Analyzing trace with hash -496628812, now seen corresponding path program 1 times [2022-11-22 01:48:18,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:18,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385367827] [2022-11-22 01:48:18,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:18,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:18,565 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-22 01:48:18,566 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:18,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385367827] [2022-11-22 01:48:18,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385367827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:18,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:18,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-22 01:48:18,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843778088] [2022-11-22 01:48:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:18,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 01:48:18,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:18,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 01:48:18,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:48:18,572 INFO L87 Difference]: Start difference. First operand 1152 states and 1665 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 01:48:21,364 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 [] [2022-11-22 01:48:23,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:23,114 INFO L93 Difference]: Finished difference Result 2758 states and 4080 transitions. [2022-11-22 01:48:23,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-22 01:48:23,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 104 [2022-11-22 01:48:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:23,124 INFO L225 Difference]: With dead ends: 2758 [2022-11-22 01:48:23,125 INFO L226 Difference]: Without dead ends: 1627 [2022-11-22 01:48:23,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-22 01:48:23,130 INFO L413 NwaCegarLoop]: 1239 mSDtfsCounter, 1570 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 891 mSolverCounterSat, 39 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1757 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 891 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:23,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 1757 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 891 Invalid, 1 Unknown, 0 Unchecked, 4.3s Time] [2022-11-22 01:48:23,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2022-11-22 01:48:23,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1153. [2022-11-22 01:48:23,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1153 states, 731 states have (on average 1.3693570451436388) internal successors, (1001), 764 states have internal predecessors, (1001), 333 states have call successors, (333), 89 states have call predecessors, (333), 88 states have return successors, (332), 329 states have call predecessors, (332), 332 states have call successors, (332) [2022-11-22 01:48:23,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1153 states to 1153 states and 1666 transitions. [2022-11-22 01:48:23,207 INFO L78 Accepts]: Start accepts. Automaton has 1153 states and 1666 transitions. Word has length 104 [2022-11-22 01:48:23,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:23,208 INFO L495 AbstractCegarLoop]: Abstraction has 1153 states and 1666 transitions. [2022-11-22 01:48:23,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-22 01:48:23,208 INFO L276 IsEmpty]: Start isEmpty. Operand 1153 states and 1666 transitions. [2022-11-22 01:48:23,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-22 01:48:23,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:23,213 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-22 01:48:23,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 01:48:23,213 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:23,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:23,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1193526821, now seen corresponding path program 1 times [2022-11-22 01:48:23,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:23,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568855147] [2022-11-22 01:48:23,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:23,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:23,535 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-22 01:48:23,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:23,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568855147] [2022-11-22 01:48:23,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568855147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:23,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:23,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:48:23,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29518632] [2022-11-22 01:48:23,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:23,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:48:23,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:23,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:48:23,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:48:23,539 INFO L87 Difference]: Start difference. First operand 1153 states and 1666 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 01:48:24,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:48:28,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:28,886 INFO L93 Difference]: Finished difference Result 2431 states and 3756 transitions. [2022-11-22 01:48:28,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-22 01:48:28,887 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-11-22 01:48:28,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:28,906 INFO L225 Difference]: With dead ends: 2431 [2022-11-22 01:48:28,906 INFO L226 Difference]: Without dead ends: 2428 [2022-11-22 01:48:28,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-22 01:48:28,910 INFO L413 NwaCegarLoop]: 1766 mSDtfsCounter, 1341 mSDsluCounter, 4198 mSDsCounter, 0 mSdLazyCounter, 705 mSolverCounterSat, 403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1445 SdHoareTripleChecker+Valid, 5964 SdHoareTripleChecker+Invalid, 1108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 403 IncrementalHoareTripleChecker+Valid, 705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:28,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1445 Valid, 5964 Invalid, 1108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [403 Valid, 705 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-22 01:48:28,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2428 states. [2022-11-22 01:48:29,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2428 to 1155. [2022-11-22 01:48:29,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 732 states have (on average 1.3688524590163935) internal successors, (1002), 764 states have internal predecessors, (1002), 334 states have call successors, (334), 89 states have call predecessors, (334), 88 states have return successors, (333), 330 states have call predecessors, (333), 333 states have call successors, (333) [2022-11-22 01:48:29,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1669 transitions. [2022-11-22 01:48:29,029 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1669 transitions. Word has length 105 [2022-11-22 01:48:29,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:29,035 INFO L495 AbstractCegarLoop]: Abstraction has 1155 states and 1669 transitions. [2022-11-22 01:48:29,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 3 states have call successors, (13), 2 states have call predecessors, (13), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-22 01:48:29,035 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1669 transitions. [2022-11-22 01:48:29,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-11-22 01:48:29,041 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:29,041 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-22 01:48:29,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 01:48:29,042 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:29,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:29,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1628684007, now seen corresponding path program 1 times [2022-11-22 01:48:29,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:29,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421566968] [2022-11-22 01:48:29,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:29,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:29,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:29,274 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-22 01:48:29,274 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:29,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421566968] [2022-11-22 01:48:29,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [421566968] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:29,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:29,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 01:48:29,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903210320] [2022-11-22 01:48:29,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:29,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 01:48:29,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:29,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 01:48:29,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 01:48:29,277 INFO L87 Difference]: Start difference. First operand 1155 states and 1669 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:48:31,048 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 [] [2022-11-22 01:48:32,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:48:33,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:33,239 INFO L93 Difference]: Finished difference Result 2688 states and 3870 transitions. [2022-11-22 01:48:33,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 01:48:33,242 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 129 [2022-11-22 01:48:33,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:33,250 INFO L225 Difference]: With dead ends: 2688 [2022-11-22 01:48:33,250 INFO L226 Difference]: Without dead ends: 1554 [2022-11-22 01:48:33,255 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 [2022-11-22 01:48:33,255 INFO L413 NwaCegarLoop]: 1441 mSDtfsCounter, 1031 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1961 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:33,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1031 Valid, 1961 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-22 01:48:33,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2022-11-22 01:48:33,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1553. [2022-11-22 01:48:33,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1553 states, 979 states have (on average 1.3615934627170583) internal successors, (1333), 1020 states have internal predecessors, (1333), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2022-11-22 01:48:33,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2228 transitions. [2022-11-22 01:48:33,446 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2228 transitions. Word has length 129 [2022-11-22 01:48:33,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:33,446 INFO L495 AbstractCegarLoop]: Abstraction has 1553 states and 2228 transitions. [2022-11-22 01:48:33,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:48:33,447 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2228 transitions. [2022-11-22 01:48:33,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-11-22 01:48:33,458 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:33,458 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-22 01:48:33,458 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 01:48:33,459 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:33,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:33,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1940388543, now seen corresponding path program 1 times [2022-11-22 01:48:33,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:33,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051604285] [2022-11-22 01:48:33,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:33,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:33,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:33,850 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-22 01:48:33,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:33,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051604285] [2022-11-22 01:48:33,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051604285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:48:33,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 01:48:33,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 01:48:33,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674765931] [2022-11-22 01:48:33,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:48:33,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 01:48:33,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:48:33,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 01:48:33,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-22 01:48:33,853 INFO L87 Difference]: Start difference. First operand 1553 states and 2228 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:48:36,189 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 [] [2022-11-22 01:48:39,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:48:39,663 INFO L93 Difference]: Finished difference Result 4115 states and 6205 transitions. [2022-11-22 01:48:39,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 01:48:39,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 131 [2022-11-22 01:48:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:48:39,683 INFO L225 Difference]: With dead ends: 4115 [2022-11-22 01:48:39,683 INFO L226 Difference]: Without dead ends: 2981 [2022-11-22 01:48:39,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-22 01:48:39,690 INFO L413 NwaCegarLoop]: 1594 mSDtfsCounter, 2533 mSDsluCounter, 2098 mSDsCounter, 0 mSdLazyCounter, 1616 mSolverCounterSat, 374 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2637 SdHoareTripleChecker+Valid, 3692 SdHoareTripleChecker+Invalid, 1991 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 1616 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-22 01:48:39,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2637 Valid, 3692 Invalid, 1991 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 1616 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-22 01:48:39,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2981 states. [2022-11-22 01:48:39,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2981 to 1556. [2022-11-22 01:48:39,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1556 states, 982 states have (on average 1.3615071283095723) internal successors, (1337), 1023 states have internal predecessors, (1337), 448 states have call successors, (448), 126 states have call predecessors, (448), 125 states have return successors, (447), 442 states have call predecessors, (447), 447 states have call successors, (447) [2022-11-22 01:48:39,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2232 transitions. [2022-11-22 01:48:39,913 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2232 transitions. Word has length 131 [2022-11-22 01:48:39,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:48:39,914 INFO L495 AbstractCegarLoop]: Abstraction has 1556 states and 2232 transitions. [2022-11-22 01:48:39,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (17), 2 states have call predecessors, (17), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-22 01:48:39,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2232 transitions. [2022-11-22 01:48:39,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-11-22 01:48:39,922 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:48:39,922 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 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] [2022-11-22 01:48:39,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 01:48:39,923 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:48:39,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:48:39,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1655505147, now seen corresponding path program 1 times [2022-11-22 01:48:39,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:48:39,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29915419] [2022-11-22 01:48:39,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:39,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:48:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:40,285 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-22 01:48:40,286 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:48:40,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29915419] [2022-11-22 01:48:40,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29915419] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:48:40,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221184278] [2022-11-22 01:48:40,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:48:40,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:48:40,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:48:40,294 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:48:40,322 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 01:48:40,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:48:40,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 1190 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:48:40,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:48:41,242 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-22 01:48:41,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:48:41,419 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-22 01:48:41,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1221184278] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:48:41,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [966338742] [2022-11-22 01:48:41,443 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-22 01:48:41,444 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:48:41,447 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:48:41,453 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:48:41,453 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:48:42,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:42,651 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:42,652 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:42,660 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-22 01:48:43,580 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:43,582 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:43,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:48:43,585 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-22 01:48:59,662 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 423 for LOIs [2022-11-22 01:49:00,568 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 136 for LOIs [2022-11-22 01:49:00,675 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_malloc with input of size 423 for LOIs [2022-11-22 01:49:00,854 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 01:51:04,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [966338742] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 01:51:04,909 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 01:51:04,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [38] imperfect sequences [5, 4, 5] total 47 [2022-11-22 01:51:04,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749673447] [2022-11-22 01:51:04,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 01:51:04,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-22 01:51:04,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 01:51:04,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-22 01:51:04,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=265, Invalid=1897, Unknown=0, NotChecked=0, Total=2162 [2022-11-22 01:51:04,912 INFO L87 Difference]: Start difference. First operand 1556 states and 2232 transitions. Second operand has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-22 01:51:10,542 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 624 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:51:16,186 WARN L233 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 632 DAG size of output: 617 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:51:22,116 WARN L233 SmtUtils]: Spent 5.57s on a formula simplification. DAG size of input: 638 DAG size of output: 623 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 01:52:30,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.31s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:32,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:34,898 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:36,402 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:40,479 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:42,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:43,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:52:45,291 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-22 01:53:17,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 01:53:17,530 INFO L93 Difference]: Finished difference Result 3179 states and 4585 transitions. [2022-11-22 01:53:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-22 01:53:17,535 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) Word has length 133 [2022-11-22 01:53:17,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 01:53:17,544 INFO L225 Difference]: With dead ends: 3179 [2022-11-22 01:53:17,544 INFO L226 Difference]: Without dead ends: 1638 [2022-11-22 01:53:17,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 185.6s TimeCoverageRelationStatistics Valid=453, Invalid=3707, Unknown=0, NotChecked=0, Total=4160 [2022-11-22 01:53:17,551 INFO L413 NwaCegarLoop]: 958 mSDtfsCounter, 91 mSDsluCounter, 12680 mSDsCounter, 0 mSdLazyCounter, 8295 mSolverCounterSat, 181 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 13638 SdHoareTripleChecker+Invalid, 8480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 8295 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 70.3s IncrementalHoareTripleChecker+Time [2022-11-22 01:53:17,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 13638 Invalid, 8480 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [181 Valid, 8295 Invalid, 4 Unknown, 0 Unchecked, 70.3s Time] [2022-11-22 01:53:17,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1638 states. [2022-11-22 01:53:17,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1638 to 1597. [2022-11-22 01:53:17,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1597 states, 1013 states have (on average 1.3573543928923988) internal successors, (1375), 1054 states have internal predecessors, (1375), 456 states have call successors, (456), 129 states have call predecessors, (456), 127 states have return successors, (468), 449 states have call predecessors, (468), 455 states have call successors, (468) [2022-11-22 01:53:17,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1597 states to 1597 states and 2299 transitions. [2022-11-22 01:53:17,888 INFO L78 Accepts]: Start accepts. Automaton has 1597 states and 2299 transitions. Word has length 133 [2022-11-22 01:53:17,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 01:53:17,889 INFO L495 AbstractCegarLoop]: Abstraction has 1597 states and 2299 transitions. [2022-11-22 01:53:17,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 29 states have (on average 2.4827586206896552) internal successors, (72), 26 states have internal predecessors, (72), 10 states have call successors, (17), 4 states have call predecessors, (17), 4 states have return successors, (16), 10 states have call predecessors, (16), 10 states have call successors, (16) [2022-11-22 01:53:17,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1597 states and 2299 transitions. [2022-11-22 01:53:17,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-11-22 01:53:17,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 01:53:17,897 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 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] [2022-11-22 01:53:17,910 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 01:53:18,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:18,106 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 01:53:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 01:53:18,107 INFO L85 PathProgramCache]: Analyzing trace with hash -1572142981, now seen corresponding path program 1 times [2022-11-22 01:53:18,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 01:53:18,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674752444] [2022-11-22 01:53:18,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:18,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 01:53:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-11-22 01:53:18,541 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 01:53:18,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674752444] [2022-11-22 01:53:18,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674752444] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 01:53:18,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [16160248] [2022-11-22 01:53:18,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 01:53:18,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 01:53:18,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 [2022-11-22 01:53:18,543 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 01:53:18,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5c5a2adc-3f38-40b4-aa01-fe84615eb729/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-22 01:53:19,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 01:53:19,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 1231 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-22 01:53:19,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 01:53:19,409 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-11-22 01:53:19,409 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 01:53:19,554 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-11-22 01:53:19,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [16160248] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 01:53:19,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2003815908] [2022-11-22 01:53:19,558 INFO L159 IcfgInterpreter]: Started Sifa with 99 locations of interest [2022-11-22 01:53:19,558 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 01:53:19,559 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 01:53:19,559 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 01:53:19,559 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 01:53:20,095 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:53:20,102 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-22 01:53:20,108 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 01:53:20,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:53:20,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:53:20,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:53:20,541 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-22 01:53:21,245 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:53:21,250 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:53:21,251 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:53:21,253 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 22 disjoint index pairs (out of 120 index pairs), introduced 16 new quantified variables, introduced 0 case distinctions, treesize of input 119 treesize of output 49 [2022-11-22 01:53:23,713 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:23,746 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 01:53:23,834 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:25,828 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:25,915 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 01:53:25,967 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:27,972 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:27,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:28,021 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 01:53:28,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 4 [2022-11-22 01:53:28,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:28,943 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:32,496 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:32,519 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:33,240 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:33,261 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:37,839 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:37,864 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:38,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:38,615 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-22 01:53:41,548 INFO L197 IcfgInterpreter]: Interpreting procedure kmalloc with input of size 167 for LOIs [2022-11-22 01:53:42,587 INFO L197 IcfgInterpreter]: Interpreting procedure ldv_zalloc with input of size 677 for LOIs [2022-11-22 01:53:44,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 6 [2022-11-22 01:53:44,690 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-22 01:53:44,813 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-22 01:53:46,603 INFO L321 Elim1Store]: treesize reduction 324, result has 43.0 percent of original size [2022-11-22 01:53:46,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 27 select indices, 27 select index equivalence classes, 352 disjoint index pairs (out of 351 index pairs), introduced 28 new quantified variables, introduced 27 case distinctions, treesize of input 1549 treesize of output 1741 [2022-11-22 01:53:46,837 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:53:46,840 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:53:46,842 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-22 01:53:46,991 INFO L321 Elim1Store]: treesize reduction 44, result has 45.7 percent of original size [2022-11-22 01:53:46,992 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 1510 treesize of output 1517 [2022-11-22 01:53:48,983 INFO L321 Elim1Store]: treesize reduction 270, result has 63.0 percent of original size [2022-11-22 01:53:48,984 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 29 select indices, 29 select index equivalence classes, 379 disjoint index pairs (out of 406 index pairs), introduced 30 new quantified variables, introduced 54 case distinctions, treesize of input 1474 treesize of output 1883