./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a 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_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI --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 f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb --- 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-5e519f3 [2022-11-03 02:23:26,820 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:23:26,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:23:26,876 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:23:26,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:23:26,880 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:23:26,882 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:23:26,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:23:26,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:23:26,893 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:23:26,894 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:23:26,896 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:23:26,896 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:23:26,899 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:23:26,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:23:26,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:23:26,903 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:23:26,904 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:23:26,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:23:26,915 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:23:26,916 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:23:26,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:23:26,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:23:26,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:23:26,927 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:23:26,930 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:23:26,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:23:26,933 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:23:26,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:23:26,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:23:26,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:23:26,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:23:26,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:23:26,940 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:23:26,941 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:23:26,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:23:26,942 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:23:26,942 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:23:26,943 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:23:26,944 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:23:26,944 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:23:26,946 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 02:23:26,984 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:23:26,984 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:23:26,985 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:23:26,985 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:23:26,986 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:23:26,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:23:26,986 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:23:26,987 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:23:26,987 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:23:26,987 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:23:26,988 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:23:26,988 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:23:26,988 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:23:26,989 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:23:26,989 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:23:26,989 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:23:26,989 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:23:26,989 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:23:26,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:23:26,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:23:26,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:23:26,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:23:26,991 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:23:26,991 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:23:26,991 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:23:26,991 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:23:26,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:23:26,992 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:23:26,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:23:26,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:26,992 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:23:26,993 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:23:26,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:23:26,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:23:26,993 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:23:26,993 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:23:26,993 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:23:26,994 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:23:26,994 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_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb [2022-11-03 02:23:27,263 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:23:27,296 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:23:27,299 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:23:27,300 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:23:27,301 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:23:27,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2022-11-03 02:23:27,375 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data/daff97673/a6c924e9faa942d0b0c5c467f0935237/FLAG26a03b76c [2022-11-03 02:23:28,333 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:23:28,334 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2022-11-03 02:23:28,370 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data/daff97673/a6c924e9faa942d0b0c5c467f0935237/FLAG26a03b76c [2022-11-03 02:23:28,736 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data/daff97673/a6c924e9faa942d0b0c5c467f0935237 [2022-11-03 02:23:28,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:23:28,740 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:23:28,742 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:28,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:23:28,746 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:23:28,746 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:28" (1/1) ... [2022-11-03 02:23:28,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7944b031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:28, skipping insertion in model container [2022-11-03 02:23:28,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:23:28" (1/1) ... [2022-11-03 02:23:28,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:23:28,914 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:23:31,033 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2022-11-03 02:23:31,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:31,120 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:23:31,555 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2022-11-03 02:23:31,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:23:31,642 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:23:31,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31 WrapperNode [2022-11-03 02:23:31,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:23:31,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:31,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:23:31,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:23:31,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:31,797 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:31,982 INFO L138 Inliner]: procedures = 309, calls = 2428, calls flagged for inlining = 139, calls inlined = 90, statements flattened = 3931 [2022-11-03 02:23:31,982 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:23:31,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:23:31,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:23:31,984 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:23:31,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:31,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:32,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:32,044 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:32,178 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:32,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:32,217 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:32,230 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:32,259 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:23:32,260 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:23:32,260 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:23:32,260 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:23:32,261 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (1/1) ... [2022-11-03 02:23:32,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:23:32,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:23:32,290 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:23:32,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:23:32,341 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:23:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:23:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 02:23:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 02:23:32,342 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_ctl_ioctl [2022-11-03 02:23:32,342 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_ctl_ioctl [2022-11-03 02:23:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_release [2022-11-03 02:23:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_release [2022-11-03 02:23:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2022-11-03 02:23:32,343 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2022-11-03 02:23:32,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:23:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:23:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_get_disc_info [2022-11-03 02:23:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_get_disc_info [2022-11-03 02:23:32,344 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_bio_alloc [2022-11-03 02:23:32,344 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_bio_alloc [2022-11-03 02:23:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:23:32,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:23:32,345 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_setup_dev [2022-11-03 02:23:32,345 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_setup_dev [2022-11-03 02:23:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 02:23:32,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 02:23:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure bdget [2022-11-03 02:23:32,346 INFO L138 BoogieDeclarations]: Found implementation of procedure bdget [2022-11-03 02:23:32,346 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_set_speed [2022-11-03 02:23:32,347 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_set_speed [2022-11-03 02:23:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure bdevname [2022-11-03 02:23:32,347 INFO L138 BoogieDeclarations]: Found implementation of procedure bdevname [2022-11-03 02:23:32,347 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:23:32,348 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:23:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_shrink_pktlist [2022-11-03 02:23:32,348 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_shrink_pktlist [2022-11-03 02:23:32,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-03 02:23:32,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-03 02:23:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-03 02:23:32,349 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-03 02:23:32,349 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:23:32,349 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:23:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:23:32,350 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:23:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_put [2022-11-03 02:23:32,350 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_put [2022-11-03 02:23:32,350 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2022-11-03 02:23:32,351 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2022-11-03 02:23:32,351 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:23:32,351 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:23:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_mode_select [2022-11-03 02:23:32,352 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_mode_select [2022-11-03 02:23:32,352 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_remove [2022-11-03 02:23:32,353 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_remove [2022-11-03 02:23:32,353 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 02:23:32,354 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 02:23:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_debugfs_cleanup [2022-11-03 02:23:32,355 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_debugfs_cleanup [2022-11-03 02:23:32,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:23:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:23:32,356 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:23:32,356 INFO L130 BoogieDeclarations]: Found specification of procedure bio_init [2022-11-03 02:23:32,356 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_init [2022-11-03 02:23:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure set_blocksize [2022-11-03 02:23:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blocksize [2022-11-03 02:23:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_dump_sense [2022-11-03 02:23:32,357 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_dump_sense [2022-11-03 02:23:32,357 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2022-11-03 02:23:32,358 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2022-11-03 02:23:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2022-11-03 02:23:32,358 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2022-11-03 02:23:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:23:32,358 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-03 02:23:32,358 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-03 02:23:32,359 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_lock_door [2022-11-03 02:23:32,360 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_lock_door [2022-11-03 02:23:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_get [2022-11-03 02:23:32,360 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_get [2022-11-03 02:23:32,360 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_remove_dev [2022-11-03 02:23:32,360 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_remove_dev [2022-11-03 02:23:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-03 02:23:32,361 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-03 02:23:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-03 02:23:32,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-03 02:23:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:23:32,361 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2022-11-03 02:23:32,362 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2022-11-03 02:23:32,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:23:32,363 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 02:23:32,363 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 02:23:32,363 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:23:32,363 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:23:32,364 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-03 02:23:32,364 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-03 02:23:32,364 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-03 02:23:32,365 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-03 02:23:32,365 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:23:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:23:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:23:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:23:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:23:32,366 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:23:32,366 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:23:32,367 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:23:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:23:32,367 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:23:32,367 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_sysfs_cleanup [2022-11-03 02:23:32,368 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_sysfs_cleanup [2022-11-03 02:23:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_init [2022-11-03 02:23:32,368 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_init [2022-11-03 02:23:32,368 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_find_dev_from_minor [2022-11-03 02:23:32,368 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_find_dev_from_minor [2022-11-03 02:23:32,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-03 02:23:32,369 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 02:23:32,370 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 02:23:32,372 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:23:32,373 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:23:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 02:23:32,373 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-11-03 02:23:32,373 INFO L130 BoogieDeclarations]: Found specification of procedure init_write_congestion_marks [2022-11-03 02:23:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure init_write_congestion_marks [2022-11-03 02:23:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:23:32,375 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:23:32,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-03 02:23:32,381 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_get_track_info [2022-11-03 02:23:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_get_track_info [2022-11-03 02:23:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-03 02:23:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-03 02:23:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-03 02:23:32,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:23:32,382 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:23:32,383 INFO L130 BoogieDeclarations]: Found specification of procedure new_decode_dev [2022-11-03 02:23:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure new_decode_dev [2022-11-03 02:23:32,383 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:23:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:23:32,383 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_create [2022-11-03 02:23:32,383 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_create [2022-11-03 02:23:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:23:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:23:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-03 02:23:32,384 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-03 02:23:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-03 02:23:32,384 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:23:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 02:23:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 02:23:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:23:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_put [2022-11-03 02:23:32,385 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_put [2022-11-03 02:23:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:23:32,385 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-03 02:23:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-03 02:23:32,386 INFO L130 BoogieDeclarations]: Found specification of procedure queue_max_segments [2022-11-03 02:23:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_max_segments [2022-11-03 02:23:32,386 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_check_events [2022-11-03 02:23:32,386 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_check_events [2022-11-03 02:23:32,386 INFO L130 BoogieDeclarations]: Found specification of procedure init_cdrom_command [2022-11-03 02:23:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure init_cdrom_command [2022-11-03 02:23:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 02:23:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 02:23:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_mode_sense [2022-11-03 02:23:32,387 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_mode_sense [2022-11-03 02:23:32,387 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-03 02:23:32,388 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-03 02:23:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_generic_packet [2022-11-03 02:23:32,388 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_generic_packet [2022-11-03 02:23:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:23:32,388 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:23:32,388 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:23:32,389 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:23:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-11-03 02:23:32,389 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-11-03 02:23:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_flush_cache [2022-11-03 02:23:32,389 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_flush_cache [2022-11-03 02:23:32,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:23:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:23:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:23:32,390 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:23:32,390 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:23:33,178 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:23:33,183 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:23:33,364 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:23:33,570 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-11-03 02:23:33,571 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-11-03 02:23:34,925 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:23:34,931 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:23:34,932 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:23:34,934 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:23:34,936 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:23:34,939 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:23:34,943 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:23:39,174 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##282: assume !false; [2022-11-03 02:23:39,175 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##281: assume false; [2022-11-03 02:23:39,175 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##214: assume !false; [2022-11-03 02:23:39,175 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##213: assume false; [2022-11-03 02:23:39,175 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##301: assume !false; [2022-11-03 02:23:39,175 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##300: assume false; [2022-11-03 02:23:39,175 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2022-11-03 02:23:39,175 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2022-11-03 02:23:39,176 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2022-11-03 02:23:39,176 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2022-11-03 02:23:39,176 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##393: assume !false; [2022-11-03 02:23:39,176 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##392: assume false; [2022-11-03 02:23:39,176 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume !false; [2022-11-03 02:23:39,176 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##152: assume false; [2022-11-03 02:23:39,303 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:23:39,951 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:23:39,952 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:23:39,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:39 BoogieIcfgContainer [2022-11-03 02:23:39,957 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:23:39,960 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:23:39,960 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:23:39,964 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:23:39,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:23:28" (1/3) ... [2022-11-03 02:23:39,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac593d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:39, skipping insertion in model container [2022-11-03 02:23:39,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:23:31" (2/3) ... [2022-11-03 02:23:39,965 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ac593d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:23:39, skipping insertion in model container [2022-11-03 02:23:39,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:23:39" (3/3) ... [2022-11-03 02:23:39,966 INFO L112 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2022-11-03 02:23:39,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:23:39,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:23:40,092 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:23:40,101 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;@286b2afe, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:23:40,101 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:23:40,108 INFO L276 IsEmpty]: Start isEmpty. Operand has 942 states, 604 states have (on average 1.3609271523178808) internal successors, (822), 624 states have internal predecessors, (822), 257 states have call successors, (257), 79 states have call predecessors, (257), 79 states have return successors, (257), 254 states have call predecessors, (257), 257 states have call successors, (257) [2022-11-03 02:23:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-11-03 02:23:40,117 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:40,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:40,118 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:40,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:40,124 INFO L85 PathProgramCache]: Analyzing trace with hash 604387563, now seen corresponding path program 1 times [2022-11-03 02:23:40,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:40,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655421190] [2022-11-03 02:23:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:40,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:40,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:23:40,708 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:40,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655421190] [2022-11-03 02:23:40,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655421190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:40,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:40,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:40,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336256761] [2022-11-03 02:23:40,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:40,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:40,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:40,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:40,757 INFO L87 Difference]: Start difference. First operand has 942 states, 604 states have (on average 1.3609271523178808) internal successors, (822), 624 states have internal predecessors, (822), 257 states have call successors, (257), 79 states have call predecessors, (257), 79 states have return successors, (257), 254 states have call predecessors, (257), 257 states have call successors, (257) Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:23:43,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:46,021 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:46,556 INFO L93 Difference]: Finished difference Result 2740 states and 3894 transitions. [2022-11-03 02:23:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:46,560 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-11-03 02:23:46,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:46,587 INFO L225 Difference]: With dead ends: 2740 [2022-11-03 02:23:46,587 INFO L226 Difference]: Without dead ends: 1805 [2022-11-03 02:23:46,598 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 [2022-11-03 02:23:46,602 INFO L413 NwaCegarLoop]: 1423 mSDtfsCounter, 1279 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1281 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:46,603 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1281 Valid, 2552 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 328 Invalid, 2 Unknown, 0 Unchecked, 5.6s Time] [2022-11-03 02:23:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1805 states. [2022-11-03 02:23:46,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1805 to 1802. [2022-11-03 02:23:46,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1160 states have (on average 1.3508620689655173) internal successors, (1567), 1193 states have internal predecessors, (1567), 486 states have call successors, (486), 156 states have call predecessors, (486), 155 states have return successors, (489), 478 states have call predecessors, (489), 484 states have call successors, (489) [2022-11-03 02:23:46,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2542 transitions. [2022-11-03 02:23:46,873 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2542 transitions. Word has length 18 [2022-11-03 02:23:46,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:46,874 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2542 transitions. [2022-11-03 02:23:46,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 3 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-03 02:23:46,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2542 transitions. [2022-11-03 02:23:46,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-03 02:23:46,885 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:46,885 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-03 02:23:46,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:23:46,886 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:46,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash 1637959866, now seen corresponding path program 1 times [2022-11-03 02:23:46,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:46,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787630011] [2022-11-03 02:23:46,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:46,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:47,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:23:47,472 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:47,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787630011] [2022-11-03 02:23:47,473 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787630011] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:47,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:47,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:23:47,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237975465] [2022-11-03 02:23:47,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:47,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:23:47,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:47,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:23:47,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:23:47,477 INFO L87 Difference]: Start difference. First operand 1802 states and 2542 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:23:50,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:53,024 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:53,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:53,567 INFO L93 Difference]: Finished difference Result 3570 states and 5035 transitions. [2022-11-03 02:23:53,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:23:53,568 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 108 [2022-11-03 02:23:53,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:53,581 INFO L225 Difference]: With dead ends: 3570 [2022-11-03 02:23:53,581 INFO L226 Difference]: Without dead ends: 1802 [2022-11-03 02:23:53,588 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 [2022-11-03 02:23:53,589 INFO L413 NwaCegarLoop]: 1158 mSDtfsCounter, 1 mSDsluCounter, 2632 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 0 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 3471 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:53,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 3471 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 487 Invalid, 2 Unknown, 0 Unchecked, 6.0s Time] [2022-11-03 02:23:53,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-11-03 02:23:53,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1802. [2022-11-03 02:23:53,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1802 states, 1160 states have (on average 1.35) internal successors, (1566), 1193 states have internal predecessors, (1566), 486 states have call successors, (486), 156 states have call predecessors, (486), 155 states have return successors, (489), 478 states have call predecessors, (489), 484 states have call successors, (489) [2022-11-03 02:23:53,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1802 states to 1802 states and 2541 transitions. [2022-11-03 02:23:53,680 INFO L78 Accepts]: Start accepts. Automaton has 1802 states and 2541 transitions. Word has length 108 [2022-11-03 02:23:53,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:53,680 INFO L495 AbstractCegarLoop]: Abstraction has 1802 states and 2541 transitions. [2022-11-03 02:23:53,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-03 02:23:53,681 INFO L276 IsEmpty]: Start isEmpty. Operand 1802 states and 2541 transitions. [2022-11-03 02:23:53,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-11-03 02:23:53,686 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:53,687 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:53,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:23:53,687 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:53,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:53,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1582322061, now seen corresponding path program 1 times [2022-11-03 02:23:53,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:53,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231574357] [2022-11-03 02:23:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:53,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:23:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:23:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:23:54,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:23:54,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231574357] [2022-11-03 02:23:54,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231574357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:23:54,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:23:54,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:23:54,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809687430] [2022-11-03 02:23:54,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:23:54,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:23:54,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:23:54,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:23:54,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:54,213 INFO L87 Difference]: Start difference. First operand 1802 states and 2541 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:23:56,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:59,608 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:23:59,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:23:59,865 INFO L93 Difference]: Finished difference Result 3646 states and 5158 transitions. [2022-11-03 02:23:59,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:23:59,866 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 113 [2022-11-03 02:23:59,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:23:59,877 INFO L225 Difference]: With dead ends: 3646 [2022-11-03 02:23:59,877 INFO L226 Difference]: Without dead ends: 1880 [2022-11-03 02:23:59,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:23:59,884 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 30 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2350 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:23:59,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2350 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 329 Invalid, 2 Unknown, 0 Unchecked, 5.5s Time] [2022-11-03 02:23:59,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1880 states. [2022-11-03 02:23:59,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1880 to 1810. [2022-11-03 02:23:59,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1168 states have (on average 1.351027397260274) internal successors, (1578), 1201 states have internal predecessors, (1578), 486 states have call successors, (486), 156 states have call predecessors, (486), 155 states have return successors, (489), 478 states have call predecessors, (489), 484 states have call successors, (489) [2022-11-03 02:23:59,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2553 transitions. [2022-11-03 02:23:59,973 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2553 transitions. Word has length 113 [2022-11-03 02:23:59,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:23:59,974 INFO L495 AbstractCegarLoop]: Abstraction has 1810 states and 2553 transitions. [2022-11-03 02:23:59,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:23:59,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2553 transitions. [2022-11-03 02:23:59,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-03 02:23:59,979 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:23:59,979 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:23:59,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:23:59,979 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:23:59,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:23:59,980 INFO L85 PathProgramCache]: Analyzing trace with hash 56204691, now seen corresponding path program 1 times [2022-11-03 02:23:59,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:23:59,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008120583] [2022-11-03 02:23:59,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:23:59,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:00,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:00,758 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:24:00,758 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:00,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008120583] [2022-11-03 02:24:00,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008120583] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:00,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:00,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:24:00,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1265284748] [2022-11-03 02:24:00,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:00,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:00,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:00,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:00,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:24:00,765 INFO L87 Difference]: Start difference. First operand 1810 states and 2553 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:24:03,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:03,392 INFO L93 Difference]: Finished difference Result 3588 states and 5061 transitions. [2022-11-03 02:24:03,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:24:03,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 115 [2022-11-03 02:24:03,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:03,405 INFO L225 Difference]: With dead ends: 3588 [2022-11-03 02:24:03,406 INFO L226 Difference]: Without dead ends: 1810 [2022-11-03 02:24:03,413 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:03,416 INFO L413 NwaCegarLoop]: 1157 mSDtfsCounter, 3 mSDsluCounter, 3943 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 4621 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:03,418 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 4621 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-03 02:24:03,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-11-03 02:24:03,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2022-11-03 02:24:03,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1168 states have (on average 1.3501712328767124) internal successors, (1577), 1200 states have internal predecessors, (1577), 486 states have call successors, (486), 156 states have call predecessors, (486), 155 states have return successors, (489), 478 states have call predecessors, (489), 484 states have call successors, (489) [2022-11-03 02:24:03,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2552 transitions. [2022-11-03 02:24:03,503 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2552 transitions. Word has length 115 [2022-11-03 02:24:03,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:03,503 INFO L495 AbstractCegarLoop]: Abstraction has 1810 states and 2552 transitions. [2022-11-03 02:24:03,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 3 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-03 02:24:03,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2552 transitions. [2022-11-03 02:24:03,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:24:03,513 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:03,514 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:03,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:24:03,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:03,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:03,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1801114506, now seen corresponding path program 1 times [2022-11-03 02:24:03,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:03,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467075029] [2022-11-03 02:24:03,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:03,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:04,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:24:04,114 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:04,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467075029] [2022-11-03 02:24:04,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467075029] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:04,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:04,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:24:04,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216763293] [2022-11-03 02:24:04,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:04,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:24:04,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:04,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:24:04,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:24:04,118 INFO L87 Difference]: Start difference. First operand 1810 states and 2552 transitions. Second operand has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 02:24:08,762 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:09,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:09,529 INFO L93 Difference]: Finished difference Result 3614 states and 5095 transitions. [2022-11-03 02:24:09,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:24:09,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 139 [2022-11-03 02:24:09,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:09,540 INFO L225 Difference]: With dead ends: 3614 [2022-11-03 02:24:09,540 INFO L226 Difference]: Without dead ends: 1810 [2022-11-03 02:24:09,546 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:24:09,547 INFO L413 NwaCegarLoop]: 1155 mSDtfsCounter, 7 mSDsluCounter, 5249 mSDsCounter, 0 mSdLazyCounter, 827 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 5768 SdHoareTripleChecker+Invalid, 831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 827 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:09,548 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 5768 Invalid, 831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 827 Invalid, 1 Unknown, 0 Unchecked, 5.2s Time] [2022-11-03 02:24:09,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1810 states. [2022-11-03 02:24:09,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1810 to 1810. [2022-11-03 02:24:09,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1810 states, 1168 states have (on average 1.3493150684931507) internal successors, (1576), 1200 states have internal predecessors, (1576), 486 states have call successors, (486), 156 states have call predecessors, (486), 155 states have return successors, (489), 478 states have call predecessors, (489), 484 states have call successors, (489) [2022-11-03 02:24:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1810 states to 1810 states and 2551 transitions. [2022-11-03 02:24:09,620 INFO L78 Accepts]: Start accepts. Automaton has 1810 states and 2551 transitions. Word has length 139 [2022-11-03 02:24:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:09,620 INFO L495 AbstractCegarLoop]: Abstraction has 1810 states and 2551 transitions. [2022-11-03 02:24:09,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.333333333333334) internal successors, (86), 6 states have internal predecessors, (86), 3 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-11-03 02:24:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1810 states and 2551 transitions. [2022-11-03 02:24:09,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-11-03 02:24:09,625 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:09,625 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:09,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:24:09,626 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:09,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:09,627 INFO L85 PathProgramCache]: Analyzing trace with hash -965740791, now seen corresponding path program 1 times [2022-11-03 02:24:09,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:09,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2147421085] [2022-11-03 02:24:09,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:09,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:10,018 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:24:10,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:10,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2147421085] [2022-11-03 02:24:10,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2147421085] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:10,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:24:10,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:24:10,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460532162] [2022-11-03 02:24:10,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:10,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:24:10,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:10,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:24:10,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:24:10,022 INFO L87 Difference]: Start difference. First operand 1810 states and 2551 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:24:15,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:16,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:16,061 INFO L93 Difference]: Finished difference Result 6065 states and 9084 transitions. [2022-11-03 02:24:16,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:24:16,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 139 [2022-11-03 02:24:16,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:16,087 INFO L225 Difference]: With dead ends: 6065 [2022-11-03 02:24:16,087 INFO L226 Difference]: Without dead ends: 4284 [2022-11-03 02:24:16,095 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 [2022-11-03 02:24:16,096 INFO L413 NwaCegarLoop]: 2562 mSDtfsCounter, 1270 mSDsluCounter, 4240 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 259 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1527 SdHoareTripleChecker+Valid, 6380 SdHoareTripleChecker+Invalid, 966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:16,096 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1527 Valid, 6380 Invalid, 966 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 706 Invalid, 1 Unknown, 0 Unchecked, 5.8s Time] [2022-11-03 02:24:16,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2022-11-03 02:24:16,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 1812. [2022-11-03 02:24:16,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1170 states have (on average 1.3487179487179488) internal successors, (1578), 1202 states have internal predecessors, (1578), 486 states have call successors, (486), 156 states have call predecessors, (486), 155 states have return successors, (489), 478 states have call predecessors, (489), 484 states have call successors, (489) [2022-11-03 02:24:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2553 transitions. [2022-11-03 02:24:16,231 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2553 transitions. Word has length 139 [2022-11-03 02:24:16,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:16,232 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 2553 transitions. [2022-11-03 02:24:16,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 2 states have call successors, (25), 2 states have call predecessors, (25), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2022-11-03 02:24:16,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2553 transitions. [2022-11-03 02:24:16,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 02:24:16,237 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:16,237 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:16,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:24:16,238 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:16,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:16,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1862576550, now seen corresponding path program 1 times [2022-11-03 02:24:16,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:16,239 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1446398480] [2022-11-03 02:24:16,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:16,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:17,620 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:24:17,620 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:17,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1446398480] [2022-11-03 02:24:17,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1446398480] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:24:17,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353241133] [2022-11-03 02:24:17,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:17,622 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:17,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:17,629 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:17,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:24:18,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:18,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 3092 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:24:18,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:18,876 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:24:18,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:18,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353241133] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:18,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:24:18,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-11-03 02:24:18,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992936586] [2022-11-03 02:24:18,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:18,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:18,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:18,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:18,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:24:18,895 INFO L87 Difference]: Start difference. First operand 1812 states and 2553 transitions. Second operand has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 02:24:22,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:22,800 INFO L93 Difference]: Finished difference Result 3616 states and 5095 transitions. [2022-11-03 02:24:22,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:24:22,802 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) Word has length 144 [2022-11-03 02:24:22,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:22,814 INFO L225 Difference]: With dead ends: 3616 [2022-11-03 02:24:22,814 INFO L226 Difference]: Without dead ends: 1794 [2022-11-03 02:24:22,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2022-11-03 02:24:22,824 INFO L413 NwaCegarLoop]: 1154 mSDtfsCounter, 15 mSDsluCounter, 6553 mSDsCounter, 0 mSdLazyCounter, 998 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6907 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:22,825 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 6907 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 998 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-11-03 02:24:22,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1794 states. [2022-11-03 02:24:22,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1794 to 1794. [2022-11-03 02:24:22,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1794 states, 1161 states have (on average 1.3479758828596038) internal successors, (1565), 1192 states have internal predecessors, (1565), 480 states have call successors, (480), 153 states have call predecessors, (480), 152 states have return successors, (483), 472 states have call predecessors, (483), 478 states have call successors, (483) [2022-11-03 02:24:22,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1794 states to 1794 states and 2528 transitions. [2022-11-03 02:24:22,940 INFO L78 Accepts]: Start accepts. Automaton has 1794 states and 2528 transitions. Word has length 144 [2022-11-03 02:24:22,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:22,940 INFO L495 AbstractCegarLoop]: Abstraction has 1794 states and 2528 transitions. [2022-11-03 02:24:22,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.857142857142858) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 4 states have call predecessors, (22), 4 states have call successors, (22) [2022-11-03 02:24:22,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1794 states and 2528 transitions. [2022-11-03 02:24:22,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 02:24:22,946 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:22,946 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:22,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:23,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:23,165 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:23,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:23,166 INFO L85 PathProgramCache]: Analyzing trace with hash -2046284330, now seen corresponding path program 1 times [2022-11-03 02:24:23,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:23,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643951196] [2022-11-03 02:24:23,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:23,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:24:24,576 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:24,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643951196] [2022-11-03 02:24:24,576 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643951196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:24:24,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846944563] [2022-11-03 02:24:24,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:24,577 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:24,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:24,578 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:24,601 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-03 02:24:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:25,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 3177 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 02:24:25,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:25,681 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 02:24:25,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:25,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1846944563] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:25,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:24:25,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-03 02:24:25,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810300710] [2022-11-03 02:24:25,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:25,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:24:25,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:25,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:24:25,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:24:25,684 INFO L87 Difference]: Start difference. First operand 1794 states and 2528 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 02:24:30,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:30,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:30,679 INFO L93 Difference]: Finished difference Result 3576 states and 5049 transitions. [2022-11-03 02:24:30,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:24:30,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 154 [2022-11-03 02:24:30,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:30,692 INFO L225 Difference]: With dead ends: 3576 [2022-11-03 02:24:30,692 INFO L226 Difference]: Without dead ends: 1802 [2022-11-03 02:24:30,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:24:30,700 INFO L413 NwaCegarLoop]: 1141 mSDtfsCounter, 9 mSDsluCounter, 3877 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:30,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 4541 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 663 Invalid, 1 Unknown, 0 Unchecked, 4.9s Time] [2022-11-03 02:24:30,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2022-11-03 02:24:30,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1800. [2022-11-03 02:24:30,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1800 states, 1166 states have (on average 1.346483704974271) internal successors, (1570), 1198 states have internal predecessors, (1570), 480 states have call successors, (480), 153 states have call predecessors, (480), 153 states have return successors, (485), 472 states have call predecessors, (485), 478 states have call successors, (485) [2022-11-03 02:24:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1800 states to 1800 states and 2535 transitions. [2022-11-03 02:24:30,795 INFO L78 Accepts]: Start accepts. Automaton has 1800 states and 2535 transitions. Word has length 154 [2022-11-03 02:24:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:30,795 INFO L495 AbstractCegarLoop]: Abstraction has 1800 states and 2535 transitions. [2022-11-03 02:24:30,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 5 states have internal predecessors, (92), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 02:24:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1800 states and 2535 transitions. [2022-11-03 02:24:30,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-11-03 02:24:30,799 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:30,800 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:30,845 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:31,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:31,013 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:31,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:31,013 INFO L85 PathProgramCache]: Analyzing trace with hash -659108430, now seen corresponding path program 1 times [2022-11-03 02:24:31,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:31,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89673883] [2022-11-03 02:24:31,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:31,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:32,293 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 02:24:32,293 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:32,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89673883] [2022-11-03 02:24:32,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89673883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:24:32,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1362860135] [2022-11-03 02:24:32,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:32,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:32,295 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:32,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:32,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-03 02:24:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:33,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 3196 conjuncts, 114 conjunts are in the unsatisfiable core [2022-11-03 02:24:33,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:33,447 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:24:33,448 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 02:24:33,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:24:33,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:24:33,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:24:33,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:24:33,816 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:24:33,816 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 02:24:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:24:34,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:34,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1362860135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:34,790 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:24:34,790 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 19 [2022-11-03 02:24:34,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602662515] [2022-11-03 02:24:34,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:34,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 02:24:34,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:34,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 02:24:34,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:24:34,795 INFO L87 Difference]: Start difference. First operand 1800 states and 2535 transitions. Second operand has 14 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (28), 2 states have call predecessors, (28), 6 states have return successors, (24), 7 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-03 02:24:39,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:24:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:41,354 INFO L93 Difference]: Finished difference Result 3618 states and 5093 transitions. [2022-11-03 02:24:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:24:41,355 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (28), 2 states have call predecessors, (28), 6 states have return successors, (24), 7 states have call predecessors, (24), 4 states have call successors, (24) Word has length 157 [2022-11-03 02:24:41,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:41,366 INFO L225 Difference]: With dead ends: 3618 [2022-11-03 02:24:41,366 INFO L226 Difference]: Without dead ends: 1818 [2022-11-03 02:24:41,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:24:41,373 INFO L413 NwaCegarLoop]: 1139 mSDtfsCounter, 0 mSDsluCounter, 1848 mSDsCounter, 0 mSdLazyCounter, 1225 mSolverCounterSat, 11 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2849 SdHoareTripleChecker+Invalid, 1237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1225 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:41,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2849 Invalid, 1237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1225 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-11-03 02:24:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-11-03 02:24:41,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1818. [2022-11-03 02:24:41,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1818 states, 1177 states have (on average 1.3440951571792694) internal successors, (1582), 1209 states have internal predecessors, (1582), 485 states have call successors, (485), 158 states have call predecessors, (485), 155 states have return successors, (492), 474 states have call predecessors, (492), 483 states have call successors, (492) [2022-11-03 02:24:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1818 states to 1818 states and 2559 transitions. [2022-11-03 02:24:41,477 INFO L78 Accepts]: Start accepts. Automaton has 1818 states and 2559 transitions. Word has length 157 [2022-11-03 02:24:41,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:41,478 INFO L495 AbstractCegarLoop]: Abstraction has 1818 states and 2559 transitions. [2022-11-03 02:24:41,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 9.7) internal successors, (97), 9 states have internal predecessors, (97), 4 states have call successors, (28), 2 states have call predecessors, (28), 6 states have return successors, (24), 7 states have call predecessors, (24), 4 states have call successors, (24) [2022-11-03 02:24:41,480 INFO L276 IsEmpty]: Start isEmpty. Operand 1818 states and 2559 transitions. [2022-11-03 02:24:41,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 02:24:41,484 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:41,484 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:41,532 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:41,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-11-03 02:24:41,713 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:41,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash -594772253, now seen corresponding path program 1 times [2022-11-03 02:24:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:41,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952336552] [2022-11-03 02:24:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:41,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 02:24:43,176 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:43,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952336552] [2022-11-03 02:24:43,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952336552] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:24:43,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618468270] [2022-11-03 02:24:43,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:43,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:43,177 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:43,178 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:43,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-03 02:24:44,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:44,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-03 02:24:44,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:44,400 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:24:44,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:44,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618468270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:44,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:24:44,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 7 [2022-11-03 02:24:44,402 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663626299] [2022-11-03 02:24:44,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:44,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:24:44,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:44,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:24:44,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:24:44,404 INFO L87 Difference]: Start difference. First operand 1818 states and 2559 transitions. Second operand has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:24:47,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:24:47,750 INFO L93 Difference]: Finished difference Result 3632 states and 5123 transitions. [2022-11-03 02:24:47,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:24:47,751 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 161 [2022-11-03 02:24:47,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:24:47,763 INFO L225 Difference]: With dead ends: 3632 [2022-11-03 02:24:47,764 INFO L226 Difference]: Without dead ends: 1820 [2022-11-03 02:24:47,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:24:47,772 INFO L413 NwaCegarLoop]: 1142 mSDtfsCounter, 15 mSDsluCounter, 6490 mSDsCounter, 0 mSdLazyCounter, 993 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 6831 SdHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 993 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:24:47,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 6831 Invalid, 995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 993 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-03 02:24:47,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1820 states. [2022-11-03 02:24:47,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1820 to 1812. [2022-11-03 02:24:47,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1812 states, 1173 states have (on average 1.3444160272804775) internal successors, (1577), 1205 states have internal predecessors, (1577), 482 states have call successors, (482), 156 states have call predecessors, (482), 156 states have return successors, (487), 474 states have call predecessors, (487), 480 states have call successors, (487) [2022-11-03 02:24:47,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1812 states to 1812 states and 2546 transitions. [2022-11-03 02:24:47,866 INFO L78 Accepts]: Start accepts. Automaton has 1812 states and 2546 transitions. Word has length 161 [2022-11-03 02:24:47,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:24:47,866 INFO L495 AbstractCegarLoop]: Abstraction has 1812 states and 2546 transitions. [2022-11-03 02:24:47,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.166666666666668) internal successors, (97), 5 states have internal predecessors, (97), 2 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:24:47,867 INFO L276 IsEmpty]: Start isEmpty. Operand 1812 states and 2546 transitions. [2022-11-03 02:24:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-03 02:24:47,870 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:24:47,871 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:24:47,920 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:24:48,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-03 02:24:48,097 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:24:48,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:24:48,098 INFO L85 PathProgramCache]: Analyzing trace with hash 271234787, now seen corresponding path program 2 times [2022-11-03 02:24:48,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:24:48,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84694161] [2022-11-03 02:24:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:24:48,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:24:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:24:50,126 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-11-03 02:24:50,127 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:24:50,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84694161] [2022-11-03 02:24:50,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84694161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:24:50,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461821435] [2022-11-03 02:24:50,128 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-03 02:24:50,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:24:50,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:24:50,130 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:24:50,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-03 02:24:53,192 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-11-03 02:24:53,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 02:24:53,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 3232 conjuncts, 87 conjunts are in the unsatisfiable core [2022-11-03 02:24:53,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:24:53,291 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 02:24:53,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:24:53,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461821435] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:24:53,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 02:24:53,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 11 [2022-11-03 02:24:53,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990098578] [2022-11-03 02:24:53,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:24:53,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:24:53,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:24:53,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:24:53,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:24:53,296 INFO L87 Difference]: Start difference. First operand 1812 states and 2546 transitions. Second operand has 11 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (25), 6 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:24:57,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:01,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-03 02:25:02,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:25:02,031 INFO L93 Difference]: Finished difference Result 3654 states and 5146 transitions. [2022-11-03 02:25:02,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:25:02,032 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (25), 6 states have call predecessors, (25), 2 states have call successors, (25) Word has length 161 [2022-11-03 02:25:02,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:25:02,042 INFO L225 Difference]: With dead ends: 3654 [2022-11-03 02:25:02,042 INFO L226 Difference]: Without dead ends: 1852 [2022-11-03 02:25:02,049 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:25:02,049 INFO L413 NwaCegarLoop]: 1148 mSDtfsCounter, 43 mSDsluCounter, 11705 mSDsCounter, 0 mSdLazyCounter, 1648 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 11432 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1648 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:25:02,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 11432 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1648 Invalid, 2 Unknown, 0 Unchecked, 8.5s Time] [2022-11-03 02:25:02,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2022-11-03 02:25:02,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1834. [2022-11-03 02:25:02,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1834 states, 1185 states have (on average 1.340928270042194) internal successors, (1589), 1217 states have internal predecessors, (1589), 486 states have call successors, (486), 162 states have call predecessors, (486), 162 states have return successors, (491), 478 states have call predecessors, (491), 484 states have call successors, (491) [2022-11-03 02:25:02,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1834 states to 1834 states and 2566 transitions. [2022-11-03 02:25:02,130 INFO L78 Accepts]: Start accepts. Automaton has 1834 states and 2566 transitions. Word has length 161 [2022-11-03 02:25:02,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:25:02,130 INFO L495 AbstractCegarLoop]: Abstraction has 1834 states and 2566 transitions. [2022-11-03 02:25:02,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 12.375) internal successors, (99), 7 states have internal predecessors, (99), 2 states have call successors, (29), 2 states have call predecessors, (29), 6 states have return successors, (25), 6 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:25:02,131 INFO L276 IsEmpty]: Start isEmpty. Operand 1834 states and 2566 transitions. [2022-11-03 02:25:02,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-11-03 02:25:02,134 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:25:02,134 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:25:02,183 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-11-03 02:25:02,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:02,349 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:25:02,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:25:02,350 INFO L85 PathProgramCache]: Analyzing trace with hash -112313611, now seen corresponding path program 1 times [2022-11-03 02:25:02,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:25:02,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899888161] [2022-11-03 02:25:02,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:02,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:25:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:12,873 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-03 02:25:12,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:25:12,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899888161] [2022-11-03 02:25:12,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899888161] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:25:12,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593412367] [2022-11-03 02:25:12,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:25:12,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:25:12,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:25:12,875 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:25:12,900 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-03 02:25:13,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:25:13,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 3239 conjuncts, 109 conjunts are in the unsatisfiable core [2022-11-03 02:25:13,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:25:13,889 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:25:13,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 02:25:13,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:25:13,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:25:13,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:25:13,924 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:25:14,263 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:25:14,716 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-03 02:25:14,716 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-03 02:25:15,030 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:25:15,031 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-03 02:25:15,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:25:15,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:25:16,633 INFO L356 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2022-11-03 02:25:16,633 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 22 treesize of output 33 [2022-11-03 02:25:17,045 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:25:17,058 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:25:17,114 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 02:25:17,242 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:25:17,798 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-03 02:25:17,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:25:17,909 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 22 [2022-11-03 02:25:18,558 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:25:18,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:25:18,569 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:25:18,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:25:19,161 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 02:25:19,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-03 02:25:19,259 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:25:19,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:25:19,857 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int)) (|v_pkt_ctl_ioctl_~#ctrl_cmd~0#1.base_35| Int) (|v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27| Int) (v_ArrVal_731 (Array Int Int))) (or (not (< |c_#StackHeapBarrier| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27|)) (not (= (select (store |c_#valid| |v_pkt_ctl_ioctl_~#ctrl_cmd~0#1.base_35| 1) |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27|) 0)) (= (mod (+ (select (select (store |c_#memory_$Pointer$.offset| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27| v_ArrVal_733) |c_~#pkt_devs~0.base|) |c_~#pkt_devs~0.offset|) (select (select (store |c_#memory_$Pointer$.base| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27| v_ArrVal_731) |c_~#pkt_devs~0.base|) |c_~#pkt_devs~0.offset|)) 18446744073709551616) 0))) is different from false [2022-11-03 02:25:20,237 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_733 (Array Int Int)) (v_ArrVal_730 Int) (|v_pkt_ctl_ioctl_~#ctrl_cmd~0#1.base_35| Int) (|v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27| Int) (v_ArrVal_731 (Array Int Int))) (or (not (< |c_#StackHeapBarrier| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27|)) (= (mod (+ (select (select (store |c_#memory_$Pointer$.offset| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27| v_ArrVal_733) |c_~#pkt_devs~0.base|) |c_~#pkt_devs~0.offset|) (select (select (store |c_#memory_$Pointer$.base| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27| v_ArrVal_731) |c_~#pkt_devs~0.base|) |c_~#pkt_devs~0.offset|)) 18446744073709551616) 0) (not (= (select (store (store |c_#valid| |c_ULTIMATE.start_pkt_init_~#__key~3#1.base| v_ArrVal_730) |v_pkt_ctl_ioctl_~#ctrl_cmd~0#1.base_35| 1) |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_27|) 0)))) is different from false [2022-11-03 02:25:20,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593412367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:25:20,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1704813252] [2022-11-03 02:25:20,301 INFO L159 IcfgInterpreter]: Started Sifa with 141 locations of interest [2022-11-03 02:25:20,301 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:25:20,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:25:20,310 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:25:20,311 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:25:24,938 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:25:25,276 INFO L244 Elim1Store]: Index analysis took 689 ms [2022-11-03 02:25:51,860 WARN L234 SmtUtils]: Spent 26.53s on a formula simplification. DAG size of input: 1668 DAG size of output: 1091 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:25:51,866 INFO L356 Elim1Store]: treesize reduction 1894, result has 46.1 percent of original size [2022-11-03 02:25:51,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 186 select indices, 186 select index equivalence classes, 17207 disjoint index pairs (out of 17205 index pairs), introduced 186 new quantified variables, introduced 185 case distinctions, treesize of input 937 treesize of output 2190 [2022-11-03 02:25:54,641 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 204 treesize of output 169 [2022-11-03 02:25:56,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:25:57,492 INFO L244 Elim1Store]: Index analysis took 1594 ms [2022-11-03 02:26:36,250 WARN L234 SmtUtils]: Spent 38.70s on a formula simplification. DAG size of input: 2040 DAG size of output: 1113 (called from [L 353] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2022-11-03 02:26:36,253 INFO L356 Elim1Store]: treesize reduction 3330, result has 33.3 percent of original size [2022-11-03 02:26:36,257 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 188 select indices, 188 select index equivalence classes, 17393 disjoint index pairs (out of 17578 index pairs), introduced 188 new quantified variables, introduced 370 case distinctions, treesize of input 947 treesize of output 2245 [2022-11-03 02:26:39,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 29 select indices, 29 select index equivalence classes, 435 disjoint index pairs (out of 406 index pairs), introduced 29 new quantified variables, introduced 0 case distinctions, treesize of input 1065 treesize of output 911 [2022-11-03 02:26:41,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 208 treesize of output 173 [2022-11-03 02:26:57,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:26:57,359 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2022-11-03 02:27:06,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:06,795 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 187 select indices, 187 select index equivalence classes, 17392 disjoint index pairs (out of 17391 index pairs), introduced 187 new quantified variables, introduced 0 case distinctions, treesize of input 936 treesize of output 562 [2022-11-03 02:27:08,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:08,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 188 select indices, 188 select index equivalence classes, 17578 disjoint index pairs (out of 17578 index pairs), introduced 188 new quantified variables, introduced 0 case distinctions, treesize of input 941 treesize of output 565 [2022-11-03 02:27:30,347 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:30,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 188 select indices, 188 select index equivalence classes, 17578 disjoint index pairs (out of 17578 index pairs), introduced 188 new quantified variables, introduced 0 case distinctions, treesize of input 941 treesize of output 565 [2022-11-03 02:27:31,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:27:31,469 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 187 select indices, 187 select index equivalence classes, 17392 disjoint index pairs (out of 17391 index pairs), introduced 187 new quantified variables, introduced 0 case distinctions, treesize of input 936 treesize of output 562 [2022-11-03 02:27:48,178 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 9 [2022-11-03 02:27:48,902 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-03 02:27:58,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:27:59,761 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:28:09,046 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:28:09,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-11-03 02:28:23,041 INFO L356 Elim1Store]: treesize reduction 644, result has 37.8 percent of original size [2022-11-03 02:28:23,042 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 24 select indices, 24 select index equivalence classes, 253 disjoint index pairs (out of 276 index pairs), introduced 24 new quantified variables, introduced 46 case distinctions, treesize of input 1581 treesize of output 1615 [2022-11-03 02:28:25,533 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:28:25,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-03 02:28:25,698 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: Maybe an infinite loop at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.tryToPushOverDualFiniteConnective(QuantifierPusher.java:345) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:188) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.convert(QuantifierPushTermWalker.java:1) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine$ApplicationTermTask.doStep(TermContextTransformationEngine.java:169) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:77) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.TermContextTransformationEngine.transform(TermContextTransformationEngine.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:295) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushTermWalker.eliminate(QuantifierPushTermWalker.java:281) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:285) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:119) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:266) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:147) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:137) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:336) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:262) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2022-11-03 02:28:25,703 INFO L158 Benchmark]: Toolchain (without parser) took 296963.10ms. Allocated memory was 117.4MB in the beginning and 1.4GB in the end (delta: 1.2GB). Free memory was 70.7MB in the beginning and 681.2MB in the end (delta: -610.5MB). Peak memory consumption was 888.8MB. Max. memory is 16.1GB. [2022-11-03 02:28:25,704 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 63.6MB in the beginning and 98.5MB in the end (delta: -35.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-03 02:28:25,704 INFO L158 Benchmark]: CACSL2BoogieTranslator took 2901.52ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 70.5MB in the beginning and 57.1MB in the end (delta: 13.4MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. [2022-11-03 02:28:25,705 INFO L158 Benchmark]: Boogie Procedure Inliner took 338.45ms. Allocated memory was 148.9MB in the beginning and 211.8MB in the end (delta: 62.9MB). Free memory was 57.1MB in the beginning and 130.8MB in the end (delta: -73.7MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. [2022-11-03 02:28:25,705 INFO L158 Benchmark]: Boogie Preprocessor took 275.76ms. Allocated memory is still 211.8MB. Free memory was 130.8MB in the beginning and 106.7MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. [2022-11-03 02:28:25,705 INFO L158 Benchmark]: RCFGBuilder took 7697.68ms. Allocated memory was 211.8MB in the beginning and 396.4MB in the end (delta: 184.5MB). Free memory was 106.7MB in the beginning and 282.0MB in the end (delta: -175.2MB). Peak memory consumption was 183.4MB. Max. memory is 16.1GB. [2022-11-03 02:28:25,706 INFO L158 Benchmark]: TraceAbstraction took 285742.65ms. Allocated memory was 396.4MB in the beginning and 1.4GB in the end (delta: 956.3MB). Free memory was 282.0MB in the beginning and 681.2MB in the end (delta: -399.2MB). Peak memory consumption was 821.4MB. Max. memory is 16.1GB. [2022-11-03 02:28:25,707 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 63.6MB in the beginning and 98.5MB in the end (delta: -35.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 2901.52ms. Allocated memory was 117.4MB in the beginning and 148.9MB in the end (delta: 31.5MB). Free memory was 70.5MB in the beginning and 57.1MB in the end (delta: 13.4MB). Peak memory consumption was 51.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 338.45ms. Allocated memory was 148.9MB in the beginning and 211.8MB in the end (delta: 62.9MB). Free memory was 57.1MB in the beginning and 130.8MB in the end (delta: -73.7MB). Peak memory consumption was 10.9MB. Max. memory is 16.1GB. * Boogie Preprocessor took 275.76ms. Allocated memory is still 211.8MB. Free memory was 130.8MB in the beginning and 106.7MB in the end (delta: 24.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.1GB. * RCFGBuilder took 7697.68ms. Allocated memory was 211.8MB in the beginning and 396.4MB in the end (delta: 184.5MB). Free memory was 106.7MB in the beginning and 282.0MB in the end (delta: -175.2MB). Peak memory consumption was 183.4MB. Max. memory is 16.1GB. * TraceAbstraction took 285742.65ms. Allocated memory was 396.4MB in the beginning and 1.4GB in the end (delta: 956.3MB). Free memory was 282.0MB in the beginning and 681.2MB in the end (delta: -399.2MB). Peak memory consumption was 821.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: Maybe an infinite loop de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: Maybe an infinite loop: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPushUtilsForSubsetPush.sequentialSubsetPush(QuantifierPushUtilsForSubsetPush.java:130) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-11-03 02:28:25,769 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI --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 f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb --- 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-5e519f3 [2022-11-03 02:28:28,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:28:28,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:28:28,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:28:28,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:28:28,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:28:28,181 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:28:28,183 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:28:28,185 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:28:28,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:28:28,188 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:28:28,189 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:28:28,190 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:28:28,191 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:28:28,193 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:28:28,194 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:28:28,195 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:28:28,196 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:28:28,198 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:28:28,201 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:28:28,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:28:28,211 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:28:28,213 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:28:28,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:28:28,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:28:28,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:28:28,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:28:28,229 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:28:28,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:28:28,234 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:28:28,234 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:28:28,235 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:28:28,236 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:28:28,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:28:28,252 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:28:28,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:28:28,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:28:28,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:28:28,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:28:28,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:28:28,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:28:28,257 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 02:28:28,305 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:28:28,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:28:28,307 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:28:28,307 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:28:28,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:28:28,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:28:28,309 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:28:28,309 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:28:28,310 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:28:28,310 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:28:28,311 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:28:28,311 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:28:28,313 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:28:28,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:28:28,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:28:28,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:28:28,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:28:28,314 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 02:28:28,314 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 02:28:28,315 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 02:28:28,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:28:28,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:28:28,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:28:28,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:28:28,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 02:28:28,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:28:28,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:28:28,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:28:28,317 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:28:28,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:28:28,317 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 02:28:28,318 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 02:28:28,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:28:28,318 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:28:28,319 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 02:28:28,319 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f81c0ae249d872dcfa63b19fa0949c00123fc4e906e065a111b2d70e300e79eb [2022-11-03 02:28:28,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:28:28,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:28:28,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:28:28,712 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:28:28,713 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:28:28,720 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2022-11-03 02:28:28,798 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data/b739ccf00/41c8a46ccd7e4d42ad71bc562bebbbb5/FLAG6b0ea5827 [2022-11-03 02:28:29,885 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:28:29,886 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2022-11-03 02:28:29,944 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data/b739ccf00/41c8a46ccd7e4d42ad71bc562bebbbb5/FLAG6b0ea5827 [2022-11-03 02:28:30,265 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/data/b739ccf00/41c8a46ccd7e4d42ad71bc562bebbbb5 [2022-11-03 02:28:30,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:28:30,271 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:28:30,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:28:30,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:28:30,278 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:28:30,280 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:28:30" (1/1) ... [2022-11-03 02:28:30,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb9e455 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:30, skipping insertion in model container [2022-11-03 02:28:30,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:28:30" (1/1) ... [2022-11-03 02:28:30,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:28:30,469 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:28:32,602 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2022-11-03 02:28:32,683 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:28:32,739 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-11-03 02:28:32,810 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:28:33,147 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2022-11-03 02:28:33,181 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:28:33,212 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:28:33,704 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/sv-benchmarks/c/ldv-linux-3.0/module_get_put-drivers-block-pktcdvd.ko.cil.out.i[265142,265155] [2022-11-03 02:28:33,739 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:28:33,919 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:28:33,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33 WrapperNode [2022-11-03 02:28:33,919 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:28:33,921 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:28:33,921 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:28:33,921 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:28:33,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,051 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,183 INFO L138 Inliner]: procedures = 323, calls = 2428, calls flagged for inlining = 139, calls inlined = 90, statements flattened = 3836 [2022-11-03 02:28:34,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:28:34,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:28:34,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:28:34,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:28:34,194 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,195 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,216 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,217 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,385 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,399 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,446 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:28:34,500 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:28:34,500 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:28:34,501 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:28:34,501 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (1/1) ... [2022-11-03 02:28:34,508 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:28:34,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:28:34,532 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:28:34,561 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:28:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-03 02:28:34,581 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-03 02:28:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-03 02:28:34,581 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-03 02:28:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_ctl_ioctl [2022-11-03 02:28:34,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_ctl_ioctl [2022-11-03 02:28:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2022-11-03 02:28:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_release [2022-11-03 02:28:34,582 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_release [2022-11-03 02:28:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure bdev_get_queue [2022-11-03 02:28:34,582 INFO L138 BoogieDeclarations]: Found implementation of procedure bdev_get_queue [2022-11-03 02:28:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2022-11-03 02:28:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-11-03 02:28:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-03 02:28:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2022-11-03 02:28:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-03 02:28:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_get_disc_info [2022-11-03 02:28:34,583 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_get_disc_info [2022-11-03 02:28:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_bio_alloc [2022-11-03 02:28:34,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_bio_alloc [2022-11-03 02:28:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-03 02:28:34,584 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-03 02:28:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_setup_dev [2022-11-03 02:28:34,584 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_setup_dev [2022-11-03 02:28:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_module_put [2022-11-03 02:28:34,585 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_module_put [2022-11-03 02:28:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure bdget [2022-11-03 02:28:34,585 INFO L138 BoogieDeclarations]: Found implementation of procedure bdget [2022-11-03 02:28:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_set_speed [2022-11-03 02:28:34,585 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_set_speed [2022-11-03 02:28:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure bdevname [2022-11-03 02:28:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure bdevname [2022-11-03 02:28:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-03 02:28:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-03 02:28:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_shrink_pktlist [2022-11-03 02:28:34,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_shrink_pktlist [2022-11-03 02:28:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_return_value [2022-11-03 02:28:34,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_return_value [2022-11-03 02:28:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure set_capacity [2022-11-03 02:28:34,588 INFO L138 BoogieDeclarations]: Found implementation of procedure set_capacity [2022-11-03 02:28:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-03 02:28:34,588 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-03 02:28:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-03 02:28:34,588 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-03 02:28:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_put [2022-11-03 02:28:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_put [2022-11-03 02:28:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure new_encode_dev [2022-11-03 02:28:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure new_encode_dev [2022-11-03 02:28:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-03 02:28:34,591 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-03 02:28:34,591 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_mode_select [2022-11-03 02:28:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_mode_select [2022-11-03 02:28:34,592 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_remove [2022-11-03 02:28:34,592 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_remove [2022-11-03 02:28:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2022-11-03 02:28:34,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2022-11-03 02:28:34,593 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_debugfs_cleanup [2022-11-03 02:28:34,593 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_debugfs_cleanup [2022-11-03 02:28:34,594 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-03 02:28:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-11-03 02:28:34,595 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-11-03 02:28:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure bio_init [2022-11-03 02:28:34,595 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_init [2022-11-03 02:28:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure set_blocksize [2022-11-03 02:28:34,595 INFO L138 BoogieDeclarations]: Found implementation of procedure set_blocksize [2022-11-03 02:28:34,595 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_dump_sense [2022-11-03 02:28:34,596 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_dump_sense [2022-11-03 02:28:34,596 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_create_kmalloc_pool [2022-11-03 02:28:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_create_kmalloc_pool [2022-11-03 02:28:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure mempool_destroy [2022-11-03 02:28:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure mempool_destroy [2022-11-03 02:28:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-03 02:28:34,597 INFO L130 BoogieDeclarations]: Found specification of procedure remove_proc_entry [2022-11-03 02:28:34,597 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_proc_entry [2022-11-03 02:28:34,598 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_lock_door [2022-11-03 02:28:34,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_lock_door [2022-11-03 02:28:34,598 INFO L130 BoogieDeclarations]: Found specification of procedure blkdev_get [2022-11-03 02:28:34,598 INFO L138 BoogieDeclarations]: Found implementation of procedure blkdev_get [2022-11-03 02:28:34,598 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_remove_dev [2022-11-03 02:28:34,598 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_remove_dev [2022-11-03 02:28:34,598 INFO L130 BoogieDeclarations]: Found specification of procedure __free_pages [2022-11-03 02:28:34,599 INFO L138 BoogieDeclarations]: Found implementation of procedure __free_pages [2022-11-03 02:28:34,599 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2022-11-03 02:28:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2022-11-03 02:28:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2022-11-03 02:28:34,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_blast_assert [2022-11-03 02:28:34,600 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_blast_assert [2022-11-03 02:28:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-03 02:28:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-11-03 02:28:34,601 INFO L130 BoogieDeclarations]: Found specification of procedure bio_put [2022-11-03 02:28:34,601 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_put [2022-11-03 02:28:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-03 02:28:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure might_fault [2022-11-03 02:28:34,602 INFO L138 BoogieDeclarations]: Found implementation of procedure might_fault [2022-11-03 02:28:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-11-03 02:28:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-03 02:28:34,602 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-03 02:28:34,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE4 [2022-11-03 02:28:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_remove [2022-11-03 02:28:34,603 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_remove [2022-11-03 02:28:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE8 [2022-11-03 02:28:34,603 INFO L130 BoogieDeclarations]: Found specification of procedure debugfs_create_dir [2022-11-03 02:28:34,604 INFO L138 BoogieDeclarations]: Found implementation of procedure debugfs_create_dir [2022-11-03 02:28:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-03 02:28:34,604 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-03 02:28:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-03 02:28:34,604 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-03 02:28:34,604 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-03 02:28:34,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-03 02:28:34,606 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2022-11-03 02:28:34,608 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_nested [2022-11-03 02:28:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-03 02:28:34,609 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-03 02:28:34,609 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_sysfs_cleanup [2022-11-03 02:28:34,609 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_sysfs_cleanup [2022-11-03 02:28:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure bio_list_init [2022-11-03 02:28:34,611 INFO L138 BoogieDeclarations]: Found implementation of procedure bio_list_init [2022-11-03 02:28:34,611 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_find_dev_from_minor [2022-11-03 02:28:34,611 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_find_dev_from_minor [2022-11-03 02:28:34,615 INFO L130 BoogieDeclarations]: Found specification of procedure _copy_from_user [2022-11-03 02:28:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure _copy_from_user [2022-11-03 02:28:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-03 02:28:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-03 02:28:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure init_write_congestion_marks [2022-11-03 02:28:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure init_write_congestion_marks [2022-11-03 02:28:34,616 INFO L130 BoogieDeclarations]: Found specification of procedure list_empty [2022-11-03 02:28:34,616 INFO L138 BoogieDeclarations]: Found implementation of procedure list_empty [2022-11-03 02:28:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_get_track_info [2022-11-03 02:28:34,617 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_get_track_info [2022-11-03 02:28:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure single_open [2022-11-03 02:28:34,617 INFO L138 BoogieDeclarations]: Found implementation of procedure single_open [2022-11-03 02:28:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-03 02:28:34,617 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-03 02:28:34,617 INFO L130 BoogieDeclarations]: Found specification of procedure new_decode_dev [2022-11-03 02:28:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure new_decode_dev [2022-11-03 02:28:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-11-03 02:28:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-11-03 02:28:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_kobj_create [2022-11-03 02:28:34,618 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_kobj_create [2022-11-03 02:28:34,618 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-03 02:28:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-03 02:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2022-11-03 02:28:34,619 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2022-11-03 02:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2022-11-03 02:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2022-11-03 02:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2022-11-03 02:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2022-11-03 02:28:34,619 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-03 02:28:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2022-11-03 02:28:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2022-11-03 02:28:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:28:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure kobject_put [2022-11-03 02:28:34,620 INFO L138 BoogieDeclarations]: Found implementation of procedure kobject_put [2022-11-03 02:28:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-03 02:28:34,620 INFO L130 BoogieDeclarations]: Found specification of procedure blk_cleanup_queue [2022-11-03 02:28:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_cleanup_queue [2022-11-03 02:28:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure queue_max_segments [2022-11-03 02:28:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_max_segments [2022-11-03 02:28:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_check_events [2022-11-03 02:28:34,621 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_check_events [2022-11-03 02:28:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE8 [2022-11-03 02:28:34,621 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE2 [2022-11-03 02:28:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure init_cdrom_command [2022-11-03 02:28:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure init_cdrom_command [2022-11-03 02:28:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2022-11-03 02:28:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2022-11-03 02:28:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2022-11-03 02:28:34,622 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_mode_sense [2022-11-03 02:28:34,622 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_mode_sense [2022-11-03 02:28:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_UINT~TO~C_UINT [2022-11-03 02:28:34,623 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_UINT~TO~C_UINT [2022-11-03 02:28:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2022-11-03 02:28:34,623 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2022-11-03 02:28:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_generic_packet [2022-11-03 02:28:34,623 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_generic_packet [2022-11-03 02:28:34,623 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-03 02:28:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-03 02:28:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-03 02:28:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-03 02:28:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure blk_queue_max_hw_sectors [2022-11-03 02:28:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_queue_max_hw_sectors [2022-11-03 02:28:34,624 INFO L130 BoogieDeclarations]: Found specification of procedure pkt_flush_cache [2022-11-03 02:28:34,624 INFO L138 BoogieDeclarations]: Found implementation of procedure pkt_flush_cache [2022-11-03 02:28:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE1 [2022-11-03 02:28:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:28:34,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:28:34,625 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-03 02:28:34,625 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-03 02:28:35,311 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:28:35,317 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:28:35,469 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:28:36,033 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-11-03 02:28:36,033 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-11-03 02:28:52,371 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:28:52,379 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:28:52,381 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:28:52,383 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:28:52,388 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:28:52,390 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:28:52,397 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-03 02:29:03,414 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##282: assume !false; [2022-11-03 02:29:03,414 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##281: assume false; [2022-11-03 02:29:03,414 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##214: assume !false; [2022-11-03 02:29:03,414 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##213: assume false; [2022-11-03 02:29:03,414 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##301: assume !false; [2022-11-03 02:29:03,415 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##300: assume false; [2022-11-03 02:29:03,415 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##177: assume !false; [2022-11-03 02:29:03,415 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##176: assume false; [2022-11-03 02:29:03,415 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume !false; [2022-11-03 02:29:03,415 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##44: assume false; [2022-11-03 02:29:03,416 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##393: assume !false; [2022-11-03 02:29:03,416 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##392: assume false; [2022-11-03 02:29:03,416 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##153: assume !false; [2022-11-03 02:29:03,416 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##152: assume false; [2022-11-03 02:29:03,485 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:29:03,502 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:29:03,502 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:29:03,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:03 BoogieIcfgContainer [2022-11-03 02:29:03,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:29:03,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:29:03,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:29:03,512 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:29:03,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:28:30" (1/3) ... [2022-11-03 02:29:03,513 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c42605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:03, skipping insertion in model container [2022-11-03 02:29:03,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:28:33" (2/3) ... [2022-11-03 02:29:03,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59c42605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:29:03, skipping insertion in model container [2022-11-03 02:29:03,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:29:03" (3/3) ... [2022-11-03 02:29:03,515 INFO L112 eAbstractionObserver]: Analyzing ICFG module_get_put-drivers-block-pktcdvd.ko.cil.out.i [2022-11-03 02:29:03,536 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:29:03,536 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:29:03,616 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:29:03,623 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;@1b8e06f1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:29:03,623 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:29:03,636 INFO L276 IsEmpty]: Start isEmpty. Operand has 1174 states, 836 states have (on average 1.3181818181818181) internal successors, (1102), 856 states have internal predecessors, (1102), 257 states have call successors, (257), 79 states have call predecessors, (257), 79 states have return successors, (257), 254 states have call predecessors, (257), 257 states have call successors, (257) [2022-11-03 02:29:03,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-03 02:29:03,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:03,647 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:03,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:03,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:03,658 INFO L85 PathProgramCache]: Analyzing trace with hash 397407914, now seen corresponding path program 1 times [2022-11-03 02:29:03,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:03,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [789505619] [2022-11-03 02:29:03,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:03,706 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:03,706 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:03,717 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:03,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 02:29:05,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:05,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 1278 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:29:05,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:05,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-03 02:29:05,531 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:05,532 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:05,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [789505619] [2022-11-03 02:29:05,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [789505619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:05,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:05,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 02:29:05,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986102028] [2022-11-03 02:29:05,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:05,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:05,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:05,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:05,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:05,582 INFO L87 Difference]: Start difference. First operand has 1174 states, 836 states have (on average 1.3181818181818181) internal successors, (1102), 856 states have internal predecessors, (1102), 257 states have call successors, (257), 79 states have call predecessors, (257), 79 states have return successors, (257), 254 states have call predecessors, (257), 257 states have call successors, (257) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:29:05,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:05,887 INFO L93 Difference]: Finished difference Result 3469 states and 4914 transitions. [2022-11-03 02:29:05,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:05,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 23 [2022-11-03 02:29:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:05,929 INFO L225 Difference]: With dead ends: 3469 [2022-11-03 02:29:05,929 INFO L226 Difference]: Without dead ends: 2277 [2022-11-03 02:29:05,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:05,953 INFO L413 NwaCegarLoop]: 1887 mSDtfsCounter, 1585 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 3434 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:05,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 3434 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:29:05,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2022-11-03 02:29:06,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 2274. [2022-11-03 02:29:06,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 1620 states have (on average 1.3092592592592593) internal successors, (2121), 1653 states have internal predecessors, (2121), 497 states have call successors, (497), 157 states have call predecessors, (497), 156 states have return successors, (498), 489 states have call predecessors, (498), 495 states have call successors, (498) [2022-11-03 02:29:06,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3116 transitions. [2022-11-03 02:29:06,237 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3116 transitions. Word has length 23 [2022-11-03 02:29:06,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:06,237 INFO L495 AbstractCegarLoop]: Abstraction has 2274 states and 3116 transitions. [2022-11-03 02:29:06,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 2 states have internal predecessors, (18), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-03 02:29:06,238 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3116 transitions. [2022-11-03 02:29:06,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-03 02:29:06,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:06,250 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:06,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:06,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:06,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:06,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:06,467 INFO L85 PathProgramCache]: Analyzing trace with hash 1661403479, now seen corresponding path program 1 times [2022-11-03 02:29:06,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:06,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262155237] [2022-11-03 02:29:06,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:06,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:06,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:06,472 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:06,516 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 02:29:08,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:08,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:29:08,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:08,388 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:29:08,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:08,397 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:08,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262155237] [2022-11-03 02:29:08,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262155237] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:08,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:08,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:29:08,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799985486] [2022-11-03 02:29:08,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:08,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:29:08,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:08,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:29:08,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:29:08,402 INFO L87 Difference]: Start difference. First operand 2274 states and 3116 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:29:08,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:08,612 INFO L93 Difference]: Finished difference Result 4499 states and 6165 transitions. [2022-11-03 02:29:08,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-03 02:29:08,613 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 136 [2022-11-03 02:29:08,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:08,629 INFO L225 Difference]: With dead ends: 4499 [2022-11-03 02:29:08,629 INFO L226 Difference]: Without dead ends: 2274 [2022-11-03 02:29:08,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:08,646 INFO L413 NwaCegarLoop]: 1596 mSDtfsCounter, 1 mSDsluCounter, 3186 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 4782 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:08,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 4782 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 02:29:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2274 states. [2022-11-03 02:29:08,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2274 to 2274. [2022-11-03 02:29:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2274 states, 1620 states have (on average 1.308641975308642) internal successors, (2120), 1653 states have internal predecessors, (2120), 497 states have call successors, (497), 157 states have call predecessors, (497), 156 states have return successors, (498), 489 states have call predecessors, (498), 495 states have call successors, (498) [2022-11-03 02:29:08,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2274 states to 2274 states and 3115 transitions. [2022-11-03 02:29:08,868 INFO L78 Accepts]: Start accepts. Automaton has 2274 states and 3115 transitions. Word has length 136 [2022-11-03 02:29:08,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:08,868 INFO L495 AbstractCegarLoop]: Abstraction has 2274 states and 3115 transitions. [2022-11-03 02:29:08,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-03 02:29:08,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2274 states and 3115 transitions. [2022-11-03 02:29:08,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-11-03 02:29:08,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:08,875 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:08,929 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:09,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:09,089 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:09,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:09,090 INFO L85 PathProgramCache]: Analyzing trace with hash 101536959, now seen corresponding path program 1 times [2022-11-03 02:29:09,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:09,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442612006] [2022-11-03 02:29:09,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:09,093 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:09,093 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:09,094 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:09,096 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 02:29:10,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:11,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 1613 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 02:29:11,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:11,444 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-03 02:29:11,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:11,444 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:11,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442612006] [2022-11-03 02:29:11,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442612006] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:11,445 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:11,445 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:29:11,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402414214] [2022-11-03 02:29:11,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:11,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:29:11,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:11,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:29:11,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:29:11,447 INFO L87 Difference]: Start difference. First operand 2274 states and 3115 transitions. Second operand has 8 states, 8 states have (on average 12.5) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:29:12,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:12,300 INFO L93 Difference]: Finished difference Result 4578 states and 6280 transitions. [2022-11-03 02:29:12,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:29:12,301 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 143 [2022-11-03 02:29:12,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:12,314 INFO L225 Difference]: With dead ends: 4578 [2022-11-03 02:29:12,315 INFO L226 Difference]: Without dead ends: 2303 [2022-11-03 02:29:12,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-11-03 02:29:12,331 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 29 mSDsluCounter, 9541 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 11136 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:12,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 11136 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-03 02:29:12,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2303 states. [2022-11-03 02:29:12,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2303 to 2291. [2022-11-03 02:29:12,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1632 states have (on average 1.3063725490196079) internal successors, (2132), 1665 states have internal predecessors, (2132), 499 states have call successors, (499), 160 states have call predecessors, (499), 159 states have return successors, (500), 491 states have call predecessors, (500), 497 states have call successors, (500) [2022-11-03 02:29:12,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3131 transitions. [2022-11-03 02:29:12,524 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3131 transitions. Word has length 143 [2022-11-03 02:29:12,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:12,524 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3131 transitions. [2022-11-03 02:29:12,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.5) internal successors, (100), 6 states have internal predecessors, (100), 2 states have call successors, (21), 2 states have call predecessors, (21), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:29:12,525 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3131 transitions. [2022-11-03 02:29:12,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-11-03 02:29:12,530 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:12,530 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:12,576 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:12,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:12,737 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:12,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:12,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2083992449, now seen corresponding path program 1 times [2022-11-03 02:29:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:12,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [571968018] [2022-11-03 02:29:12,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:12,742 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:12,742 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:12,750 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:12,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 02:29:14,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:14,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 1608 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 02:29:14,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:14,731 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:29:14,731 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:14,732 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:14,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [571968018] [2022-11-03 02:29:14,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [571968018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:14,732 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:14,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-03 02:29:14,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173274742] [2022-11-03 02:29:14,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:14,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 02:29:14,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 02:29:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:14,734 INFO L87 Difference]: Start difference. First operand 2291 states and 3131 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:29:15,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:15,017 INFO L93 Difference]: Finished difference Result 4518 states and 6183 transitions. [2022-11-03 02:29:15,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:15,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 144 [2022-11-03 02:29:15,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:15,032 INFO L225 Difference]: With dead ends: 4518 [2022-11-03 02:29:15,032 INFO L226 Difference]: Without dead ends: 2291 [2022-11-03 02:29:15,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:29:15,042 INFO L413 NwaCegarLoop]: 1595 mSDtfsCounter, 3 mSDsluCounter, 4770 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 6365 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:15,044 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 6365 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:15,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2022-11-03 02:29:15,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2022-11-03 02:29:15,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1632 states have (on average 1.3057598039215685) internal successors, (2131), 1664 states have internal predecessors, (2131), 499 states have call successors, (499), 160 states have call predecessors, (499), 159 states have return successors, (500), 491 states have call predecessors, (500), 497 states have call successors, (500) [2022-11-03 02:29:15,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3130 transitions. [2022-11-03 02:29:15,164 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3130 transitions. Word has length 144 [2022-11-03 02:29:15,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:15,164 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3130 transitions. [2022-11-03 02:29:15,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-03 02:29:15,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3130 transitions. [2022-11-03 02:29:15,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-11-03 02:29:15,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:15,169 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:15,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:15,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:15,385 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:15,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:15,385 INFO L85 PathProgramCache]: Analyzing trace with hash 140104365, now seen corresponding path program 1 times [2022-11-03 02:29:15,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:15,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [978303518] [2022-11-03 02:29:15,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:15,387 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:15,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:15,388 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:15,391 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 02:29:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:17,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 1720 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 02:29:17,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:29:17,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:17,385 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:17,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [978303518] [2022-11-03 02:29:17,385 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [978303518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:17,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:17,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:29:17,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731428896] [2022-11-03 02:29:17,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:17,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:29:17,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:17,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:29:17,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:29:17,389 INFO L87 Difference]: Start difference. First operand 2291 states and 3130 transitions. Second operand has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 02:29:17,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:17,738 INFO L93 Difference]: Finished difference Result 4552 states and 6227 transitions. [2022-11-03 02:29:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:29:17,740 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 180 [2022-11-03 02:29:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:17,754 INFO L225 Difference]: With dead ends: 4552 [2022-11-03 02:29:17,754 INFO L226 Difference]: Without dead ends: 2291 [2022-11-03 02:29:17,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:29:17,763 INFO L413 NwaCegarLoop]: 1593 mSDtfsCounter, 7 mSDsluCounter, 6356 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 7949 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:17,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 7949 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2291 states. [2022-11-03 02:29:17,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2291 to 2291. [2022-11-03 02:29:17,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2291 states, 1632 states have (on average 1.3051470588235294) internal successors, (2130), 1664 states have internal predecessors, (2130), 499 states have call successors, (499), 160 states have call predecessors, (499), 159 states have return successors, (500), 491 states have call predecessors, (500), 497 states have call successors, (500) [2022-11-03 02:29:17,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2291 states to 2291 states and 3129 transitions. [2022-11-03 02:29:17,871 INFO L78 Accepts]: Start accepts. Automaton has 2291 states and 3129 transitions. Word has length 180 [2022-11-03 02:29:17,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:17,872 INFO L495 AbstractCegarLoop]: Abstraction has 2291 states and 3129 transitions. [2022-11-03 02:29:17,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.833333333333332) internal successors, (125), 6 states have internal predecessors, (125), 3 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2022-11-03 02:29:17,873 INFO L276 IsEmpty]: Start isEmpty. Operand 2291 states and 3129 transitions. [2022-11-03 02:29:17,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-11-03 02:29:17,877 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:17,878 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:17,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:18,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:18,098 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:18,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:18,099 INFO L85 PathProgramCache]: Analyzing trace with hash -2037787114, now seen corresponding path program 1 times [2022-11-03 02:29:18,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:18,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1982185558] [2022-11-03 02:29:18,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:18,101 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:18,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:18,103 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:18,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 02:29:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:20,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 1755 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 02:29:20,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:20,791 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:29:20,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:20,792 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:20,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1982185558] [2022-11-03 02:29:20,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1982185558] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:20,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:20,793 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-03 02:29:20,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450421123] [2022-11-03 02:29:20,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:20,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-03 02:29:20,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:20,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-03 02:29:20,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-03 02:29:20,795 INFO L87 Difference]: Start difference. First operand 2291 states and 3129 transitions. Second operand has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (23), 6 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:29:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:22,537 INFO L93 Difference]: Finished difference Result 6830 states and 9407 transitions. [2022-11-03 02:29:22,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-03 02:29:22,548 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (23), 6 states have call predecessors, (23), 2 states have call successors, (23) Word has length 182 [2022-11-03 02:29:22,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:22,578 INFO L225 Difference]: With dead ends: 6830 [2022-11-03 02:29:22,578 INFO L226 Difference]: Without dead ends: 4568 [2022-11-03 02:29:22,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2022-11-03 02:29:22,589 INFO L413 NwaCegarLoop]: 3115 mSDtfsCounter, 1579 mSDsluCounter, 26432 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1595 SdHoareTripleChecker+Valid, 29547 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:22,590 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1595 Valid, 29547 Invalid, 124 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [9 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 02:29:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2022-11-03 02:29:22,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4529. [2022-11-03 02:29:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4529 states, 3225 states have (on average 1.3057364341085271) internal successors, (4211), 3288 states have internal predecessors, (4211), 987 states have call successors, (987), 315 states have call predecessors, (987), 316 states have return successors, (1010), 974 states have call predecessors, (1010), 985 states have call successors, (1010) [2022-11-03 02:29:22,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4529 states to 4529 states and 6208 transitions. [2022-11-03 02:29:22,862 INFO L78 Accepts]: Start accepts. Automaton has 4529 states and 6208 transitions. Word has length 182 [2022-11-03 02:29:22,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:22,863 INFO L495 AbstractCegarLoop]: Abstraction has 4529 states and 6208 transitions. [2022-11-03 02:29:22,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.454545454545455) internal successors, (126), 7 states have internal predecessors, (126), 2 states have call successors, (27), 2 states have call predecessors, (27), 6 states have return successors, (23), 6 states have call predecessors, (23), 2 states have call successors, (23) [2022-11-03 02:29:22,864 INFO L276 IsEmpty]: Start isEmpty. Operand 4529 states and 6208 transitions. [2022-11-03 02:29:22,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-11-03 02:29:22,872 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:22,872 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:22,927 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:23,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:23,097 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:23,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:23,098 INFO L85 PathProgramCache]: Analyzing trace with hash 539644908, now seen corresponding path program 1 times [2022-11-03 02:29:23,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:23,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862993267] [2022-11-03 02:29:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:23,100 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:23,100 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:23,100 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:23,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 02:29:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:24,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1750 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-03 02:29:24,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:25,074 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 02:29:25,074 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:25,074 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:25,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862993267] [2022-11-03 02:29:25,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1862993267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:25,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:25,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 02:29:25,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038646566] [2022-11-03 02:29:25,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:25,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 02:29:25,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:25,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 02:29:25,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 02:29:25,076 INFO L87 Difference]: Start difference. First operand 4529 states and 6208 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:29:26,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:26,024 INFO L93 Difference]: Finished difference Result 8710 states and 12326 transitions. [2022-11-03 02:29:26,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:29:26,025 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 183 [2022-11-03 02:29:26,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:26,058 INFO L225 Difference]: With dead ends: 8710 [2022-11-03 02:29:26,058 INFO L226 Difference]: Without dead ends: 6476 [2022-11-03 02:29:26,066 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 02:29:26,067 INFO L413 NwaCegarLoop]: 2697 mSDtfsCounter, 2039 mSDsluCounter, 4720 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2296 SdHoareTripleChecker+Valid, 7417 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:26,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2296 Valid, 7417 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:29:26,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6476 states. [2022-11-03 02:29:26,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6476 to 4523. [2022-11-03 02:29:26,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4523 states, 3222 states have (on average 1.3057107386716325) internal successors, (4207), 3285 states have internal predecessors, (4207), 985 states have call successors, (985), 314 states have call predecessors, (985), 315 states have return successors, (1008), 972 states have call predecessors, (1008), 983 states have call successors, (1008) [2022-11-03 02:29:26,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4523 states to 4523 states and 6200 transitions. [2022-11-03 02:29:26,418 INFO L78 Accepts]: Start accepts. Automaton has 4523 states and 6200 transitions. Word has length 183 [2022-11-03 02:29:26,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:26,419 INFO L495 AbstractCegarLoop]: Abstraction has 4523 states and 6200 transitions. [2022-11-03 02:29:26,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-11-03 02:29:26,420 INFO L276 IsEmpty]: Start isEmpty. Operand 4523 states and 6200 transitions. [2022-11-03 02:29:26,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-11-03 02:29:26,426 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:26,426 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:26,487 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:26,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:26,640 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:26,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:26,641 INFO L85 PathProgramCache]: Analyzing trace with hash -1467678284, now seen corresponding path program 1 times [2022-11-03 02:29:26,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:26,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [683066749] [2022-11-03 02:29:26,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:26,643 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:26,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:26,644 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:26,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 02:29:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:28,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 1762 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-03 02:29:28,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:28,732 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-03 02:29:28,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:28,744 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:28,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [683066749] [2022-11-03 02:29:28,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [683066749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:28,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:28,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:29:28,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39029885] [2022-11-03 02:29:28,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:28,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:29:28,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:28,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:29:28,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:29:28,748 INFO L87 Difference]: Start difference. First operand 4523 states and 6200 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-03 02:29:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:29,270 INFO L93 Difference]: Finished difference Result 4598 states and 6273 transitions. [2022-11-03 02:29:29,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:29:29,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 188 [2022-11-03 02:29:29,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:29,282 INFO L225 Difference]: With dead ends: 4598 [2022-11-03 02:29:29,282 INFO L226 Difference]: Without dead ends: 2300 [2022-11-03 02:29:29,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:29:29,290 INFO L413 NwaCegarLoop]: 1592 mSDtfsCounter, 15 mSDsluCounter, 7932 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 9524 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:29,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 9524 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:29:29,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2300 states. [2022-11-03 02:29:29,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2300 to 2300. [2022-11-03 02:29:29,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2300 states, 1640 states have (on average 1.300609756097561) internal successors, (2133), 1671 states have internal predecessors, (2133), 497 states have call successors, (497), 163 states have call predecessors, (497), 162 states have return successors, (498), 489 states have call predecessors, (498), 495 states have call successors, (498) [2022-11-03 02:29:29,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2300 states to 2300 states and 3128 transitions. [2022-11-03 02:29:29,409 INFO L78 Accepts]: Start accepts. Automaton has 2300 states and 3128 transitions. Word has length 188 [2022-11-03 02:29:29,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:29,410 INFO L495 AbstractCegarLoop]: Abstraction has 2300 states and 3128 transitions. [2022-11-03 02:29:29,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-11-03 02:29:29,411 INFO L276 IsEmpty]: Start isEmpty. Operand 2300 states and 3128 transitions. [2022-11-03 02:29:29,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-03 02:29:29,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:29,416 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:29,480 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:29,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:29,637 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:29,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:29,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1656359814, now seen corresponding path program 1 times [2022-11-03 02:29:29,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:29,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1806890213] [2022-11-03 02:29:29,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:29,640 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:29,640 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:29,642 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:29,650 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 02:29:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:31,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1833 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 02:29:31,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:32,493 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-03 02:29:32,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:32,494 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:32,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1806890213] [2022-11-03 02:29:32,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1806890213] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:32,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:32,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-03 02:29:32,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240736283] [2022-11-03 02:29:32,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:32,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-03 02:29:32,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:32,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-03 02:29:32,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-03 02:29:32,498 INFO L87 Difference]: Start difference. First operand 2300 states and 3128 transitions. Second operand has 10 states, 10 states have (on average 13.9) internal successors, (139), 7 states have internal predecessors, (139), 3 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 02:29:46,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:46,895 INFO L93 Difference]: Finished difference Result 7716 states and 10791 transitions. [2022-11-03 02:29:46,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-03 02:29:46,896 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 7 states have internal predecessors, (139), 3 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) Word has length 207 [2022-11-03 02:29:46,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:46,926 INFO L225 Difference]: With dead ends: 7716 [2022-11-03 02:29:46,927 INFO L226 Difference]: Without dead ends: 5482 [2022-11-03 02:29:46,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-03 02:29:46,936 INFO L413 NwaCegarLoop]: 3666 mSDtfsCounter, 2219 mSDsluCounter, 25406 mSDsCounter, 0 mSdLazyCounter, 1634 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2363 SdHoareTripleChecker+Valid, 29072 SdHoareTripleChecker+Invalid, 1784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1634 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:46,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2363 Valid, 29072 Invalid, 1784 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [150 Valid, 1634 Invalid, 0 Unknown, 0 Unchecked, 13.5s Time] [2022-11-03 02:29:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2022-11-03 02:29:47,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 4470. [2022-11-03 02:29:47,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4470 states, 3191 states have (on average 1.3039799435913506) internal successors, (4161), 3253 states have internal predecessors, (4161), 966 states have call successors, (966), 311 states have call predecessors, (966), 312 states have return successors, (983), 953 states have call predecessors, (983), 964 states have call successors, (983) [2022-11-03 02:29:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4470 states to 4470 states and 6110 transitions. [2022-11-03 02:29:47,331 INFO L78 Accepts]: Start accepts. Automaton has 4470 states and 6110 transitions. Word has length 207 [2022-11-03 02:29:47,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:47,332 INFO L495 AbstractCegarLoop]: Abstraction has 4470 states and 6110 transitions. [2022-11-03 02:29:47,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.9) internal successors, (139), 7 states have internal predecessors, (139), 3 states have call successors, (29), 3 states have call predecessors, (29), 5 states have return successors, (25), 5 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 02:29:47,332 INFO L276 IsEmpty]: Start isEmpty. Operand 4470 states and 6110 transitions. [2022-11-03 02:29:47,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-03 02:29:47,341 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:47,341 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:47,406 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:47,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:47,556 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:47,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:47,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1963447356, now seen corresponding path program 1 times [2022-11-03 02:29:47,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:47,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [266710607] [2022-11-03 02:29:47,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:47,559 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:47,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:47,561 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:47,593 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 02:29:49,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:49,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 1831 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:29:49,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:49,766 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-03 02:29:49,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:49,767 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:49,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [266710607] [2022-11-03 02:29:49,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [266710607] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:49,767 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:49,768 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:49,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531575020] [2022-11-03 02:29:49,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:49,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:49,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:49,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:49,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:49,770 INFO L87 Difference]: Start difference. First operand 4470 states and 6110 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:29:50,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:50,171 INFO L93 Difference]: Finished difference Result 9022 states and 12387 transitions. [2022-11-03 02:29:50,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:50,173 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 207 [2022-11-03 02:29:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:50,194 INFO L225 Difference]: With dead ends: 9022 [2022-11-03 02:29:50,194 INFO L226 Difference]: Without dead ends: 4646 [2022-11-03 02:29:50,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 205 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:50,209 INFO L413 NwaCegarLoop]: 1607 mSDtfsCounter, 41 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3184 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:50,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3184 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 02:29:50,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4646 states. [2022-11-03 02:29:50,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4646 to 4490. [2022-11-03 02:29:50,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3211 states have (on average 1.3045780130800373) internal successors, (4189), 3273 states have internal predecessors, (4189), 966 states have call successors, (966), 311 states have call predecessors, (966), 312 states have return successors, (983), 953 states have call predecessors, (983), 964 states have call successors, (983) [2022-11-03 02:29:50,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6138 transitions. [2022-11-03 02:29:50,570 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6138 transitions. Word has length 207 [2022-11-03 02:29:50,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:50,571 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 6138 transitions. [2022-11-03 02:29:50,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 3 states have internal predecessors, (133), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-11-03 02:29:50,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6138 transitions. [2022-11-03 02:29:50,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-11-03 02:29:50,580 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:50,580 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:50,645 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:50,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:50,781 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:50,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:50,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1864721690, now seen corresponding path program 1 times [2022-11-03 02:29:50,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:50,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058092314] [2022-11-03 02:29:50,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:50,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:50,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:50,786 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:50,788 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 02:29:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:29:52,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 1836 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-03 02:29:52,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:29:54,111 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-03 02:29:54,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 02:29:54,112 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:29:54,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058092314] [2022-11-03 02:29:54,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058092314] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:29:54,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:29:54,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-03 02:29:54,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725552885] [2022-11-03 02:29:54,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:29:54,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-03 02:29:54,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 02:29:54,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-03 02:29:54,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:54,115 INFO L87 Difference]: Start difference. First operand 4490 states and 6138 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 02:29:54,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:29:54,743 INFO L93 Difference]: Finished difference Result 8888 states and 12197 transitions. [2022-11-03 02:29:54,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-03 02:29:54,744 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) Word has length 210 [2022-11-03 02:29:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:29:54,781 INFO L225 Difference]: With dead ends: 8888 [2022-11-03 02:29:54,782 INFO L226 Difference]: Without dead ends: 4492 [2022-11-03 02:29:54,799 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-03 02:29:54,800 INFO L413 NwaCegarLoop]: 1604 mSDtfsCounter, 1440 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:29:54,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 1664 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 02:29:54,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4492 states. [2022-11-03 02:29:55,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4492 to 4490. [2022-11-03 02:29:55,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4490 states, 3211 states have (on average 1.301775147928994) internal successors, (4180), 3273 states have internal predecessors, (4180), 966 states have call successors, (966), 311 states have call predecessors, (966), 312 states have return successors, (983), 953 states have call predecessors, (983), 964 states have call successors, (983) [2022-11-03 02:29:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4490 states to 4490 states and 6129 transitions. [2022-11-03 02:29:55,304 INFO L78 Accepts]: Start accepts. Automaton has 4490 states and 6129 transitions. Word has length 210 [2022-11-03 02:29:55,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:29:55,305 INFO L495 AbstractCegarLoop]: Abstraction has 4490 states and 6129 transitions. [2022-11-03 02:29:55,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 3 states have call successors, (29), 3 states have call predecessors, (29), 3 states have return successors, (25), 3 states have call predecessors, (25), 3 states have call successors, (25) [2022-11-03 02:29:55,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4490 states and 6129 transitions. [2022-11-03 02:29:55,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2022-11-03 02:29:55,316 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:29:55,316 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:29:55,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 02:29:55,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 02:29:55,541 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:29:55,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:29:55,542 INFO L85 PathProgramCache]: Analyzing trace with hash -2138496379, now seen corresponding path program 1 times [2022-11-03 02:29:55,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 02:29:55,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1329912267] [2022-11-03 02:29:55,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:29:55,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 02:29:55,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 02:29:55,546 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 02:29:55,590 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-11-03 02:30:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:30:03,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1843 conjuncts, 102 conjunts are in the unsatisfiable core [2022-11-03 02:30:03,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:30:03,135 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:30:03,165 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:30:03,325 INFO L356 Elim1Store]: treesize reduction 22, result has 35.3 percent of original size [2022-11-03 02:30:03,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 27 [2022-11-03 02:30:03,930 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 6 treesize of output 7 [2022-11-03 02:30:05,688 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-11-03 02:30:05,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-11-03 02:30:06,620 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:06,687 INFO L356 Elim1Store]: treesize reduction 32, result has 27.3 percent of original size [2022-11-03 02:30:06,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 39 [2022-11-03 02:30:07,125 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-03 02:30:07,126 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:30:08,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2022-11-03 02:30:16,699 INFO L356 Elim1Store]: treesize reduction 54, result has 29.9 percent of original size [2022-11-03 02:30:16,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 26 treesize of output 43 [2022-11-03 02:30:18,748 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:30:18,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-03 02:30:19,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:19,911 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-03 02:30:19,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 32 [2022-11-03 02:30:21,662 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-03 02:30:21,663 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:30:30,108 INFO L356 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2022-11-03 02:30:30,108 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 11 [2022-11-03 02:30:31,953 INFO L356 Elim1Store]: treesize reduction 23, result has 32.4 percent of original size [2022-11-03 02:30:31,954 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 36 [2022-11-03 02:30:35,519 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:35,522 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:30:35,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-03 02:30:35,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 14 treesize of output 16 [2022-11-03 02:30:36,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:30:36,948 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2022-11-03 02:30:36,962 INFO L173 IndexEqualityManager]: detected equality via solver [2022-11-03 02:30:36,963 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2022-11-03 02:30:37,281 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:30:37,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:30:38,448 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_562 (Array (_ BitVec 64) (_ BitVec 64))) (|v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19| (_ BitVec 64)) (|v_pkt_ctl_ioctl_~#ctrl_cmd~0#1.base_25| (_ BitVec 64)) (v_ArrVal_563 (Array (_ BitVec 64) (_ BitVec 64)))) (or (not (= (_ bv0 1) (select (store |c_#valid| |v_pkt_ctl_ioctl_~#ctrl_cmd~0#1.base_25| (_ bv1 1)) |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19|))) (= (_ bv0 64) (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))) |c_~#pkt_devs~0.offset|))) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19| v_ArrVal_563) |c_~#pkt_devs~0.base|) .cse0) (select (select (store |c_#memory_$Pointer$.base| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19| v_ArrVal_562) |c_~#pkt_devs~0.base|) .cse0)))) (not (bvult |c_#StackHeapBarrier| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19|)))) is different from false [2022-11-03 02:30:39,571 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_560 (_ BitVec 1)) (v_ArrVal_562 (Array (_ BitVec 64) (_ BitVec 64))) (|v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19| (_ BitVec 64)) (|v_pkt_ctl_ioctl_~#ctrl_cmd~0#1.base_25| (_ BitVec 64)) (v_ArrVal_563 (Array (_ BitVec 64) (_ BitVec 64)))) (or (= (_ bv0 64) (let ((.cse0 (bvadd (bvmul (_ bv8 64) ((_ sign_extend 32) (_ bv0 32))) |c_~#pkt_devs~0.offset|))) (bvadd (select (select (store |c_#memory_$Pointer$.offset| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19| v_ArrVal_563) |c_~#pkt_devs~0.base|) .cse0) (select (select (store |c_#memory_$Pointer$.base| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19| v_ArrVal_562) |c_~#pkt_devs~0.base|) .cse0)))) (not (= (_ bv0 1) (select (store (store |c_#valid| |c_ULTIMATE.start_pkt_init_~#__key~3#1.base| v_ArrVal_560) |v_pkt_ctl_ioctl_~#ctrl_cmd~0#1.base_25| (_ bv1 1)) |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19|))) (not (bvult |c_#StackHeapBarrier| |v_pkt_ctl_ioctl_~#pkt_dev~0#1.base_19|)))) is different from false [2022-11-03 02:30:39,718 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 02:30:39,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1329912267] [2022-11-03 02:30:39,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1329912267] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:30:39,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [987511420] [2022-11-03 02:30:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:30:39,719 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 02:30:39,720 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 02:30:39,723 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 02:30:39,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_88bce945-a335-466b-8187-a275442dd218/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process