./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 06:48:44,750 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 06:48:44,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 06:48:44,782 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 06:48:44,782 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 06:48:44,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 06:48:44,784 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 06:48:44,786 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 06:48:44,788 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 06:48:44,789 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 06:48:44,790 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 06:48:44,791 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 06:48:44,791 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 06:48:44,792 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 06:48:44,794 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 06:48:44,795 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 06:48:44,796 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 06:48:44,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 06:48:44,798 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 06:48:44,800 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 06:48:44,802 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 06:48:44,803 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 06:48:44,804 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 06:48:44,805 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 06:48:44,809 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 06:48:44,809 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 06:48:44,810 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 06:48:44,811 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 06:48:44,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 06:48:44,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 06:48:44,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 06:48:44,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 06:48:44,815 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 06:48:44,815 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 06:48:44,816 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 06:48:44,817 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 06:48:44,817 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 06:48:44,818 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 06:48:44,818 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 06:48:44,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 06:48:44,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 06:48:44,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-19 06:48:44,866 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 06:48:44,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 06:48:44,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 06:48:44,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 06:48:44,868 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 06:48:44,868 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 06:48:44,868 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 06:48:44,868 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 06:48:44,869 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 06:48:44,869 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 06:48:44,869 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 06:48:44,869 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 06:48:44,869 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 06:48:44,869 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 06:48:44,870 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 06:48:44,870 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 06:48:44,870 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 06:48:44,870 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 06:48:44,878 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 06:48:44,878 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 06:48:44,878 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 06:48:44,879 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 06:48:44,879 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 06:48:44,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 06:48:44,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 06:48:44,881 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 06:48:44,882 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 06:48:44,882 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 06:48:44,883 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 06:48:44,883 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:44,883 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 06:48:44,883 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 06:48:44,884 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 06:48:44,884 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 06:48:44,884 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 06:48:44,884 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 06:48:44,885 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 06:48:44,885 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 06:48:44,886 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_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 949424244b253eebe8c539a6549e978b334eb11066ed24813c344448dac2db32 [2022-11-19 06:48:45,159 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 06:48:45,185 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 06:48:45,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 06:48:45,189 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 06:48:45,190 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 06:48:45,191 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-19 06:48:45,247 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/data/7e652eea0/86649673dff3409e9c3a84b8ced17234/FLAG84065eba6 [2022-11-19 06:48:46,120 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 06:48:46,120 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-19 06:48:46,176 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/data/7e652eea0/86649673dff3409e9c3a84b8ced17234/FLAG84065eba6 [2022-11-19 06:48:46,231 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/data/7e652eea0/86649673dff3409e9c3a84b8ced17234 [2022-11-19 06:48:46,235 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 06:48:46,237 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 06:48:46,238 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:46,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 06:48:46,242 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 06:48:46,243 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:46" (1/1) ... [2022-11-19 06:48:46,244 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cde4dd8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:46, skipping insertion in model container [2022-11-19 06:48:46,245 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:48:46" (1/1) ... [2022-11-19 06:48:46,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 06:48:46,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 06:48:49,505 WARN L234 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_0878703e-f55c-4869-861d-1f9663731dd4/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2022-11-19 06:48:49,566 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:49,757 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 06:48:50,370 WARN L234 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_0878703e-f55c-4869-861d-1f9663731dd4/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i[422408,422421] [2022-11-19 06:48:50,381 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 06:48:50,699 INFO L208 MainTranslator]: Completed translation [2022-11-19 06:48:50,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50 WrapperNode [2022-11-19 06:48:50,700 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 06:48:50,701 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:50,701 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 06:48:50,701 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 06:48:50,708 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:50,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,260 INFO L138 Inliner]: procedures = 367, calls = 5951, calls flagged for inlining = 162, calls inlined = 160, statements flattened = 12627 [2022-11-19 06:48:51,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 06:48:51,262 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 06:48:51,263 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 06:48:51,263 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 06:48:51,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,803 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,912 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 06:48:51,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 06:48:51,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 06:48:51,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 06:48:51,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (1/1) ... [2022-11-19 06:48:51,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 06:48:51,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:48:51,949 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 06:48:51,956 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 06:48:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_set [2022-11-19 06:48:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_set [2022-11-19 06:48:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-19 06:48:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-19 06:48:51,991 INFO L130 BoogieDeclarations]: Found specification of procedure map_index_to_lba [2022-11-19 06:48:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure map_index_to_lba [2022-11-19 06:48:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure sector_size_show [2022-11-19 06:48:52,078 INFO L138 BoogieDeclarations]: Found implementation of procedure sector_size_show [2022-11-19 06:48:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-19 06:48:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-19 06:48:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-19 06:48:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-19 06:48:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure dif_show [2022-11-19 06:48:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_show [2022-11-19 06:48:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-11-19 06:48:52,079 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-11-19 06:48:52,079 INFO L130 BoogieDeclarations]: Found specification of procedure stop_all_queued [2022-11-19 06:48:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_all_queued [2022-11-19 06:48:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_remove_adapter [2022-11-19 06:48:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_remove_adapter [2022-11-19 06:48:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_lbp [2022-11-19 06:48:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_lbp [2022-11-19 06:48:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_queuecommand_lock_or_not [2022-11-19 06:48:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_queuecommand_lock_or_not [2022-11-19 06:48:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-19 06:48:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-19 06:48:52,080 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_host_reset [2022-11-19 06:48:52,080 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_host_reset [2022-11-19 06:48:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_lock [2022-11-19 06:48:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_lock [2022-11-19 06:48:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-19 06:48:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-19 06:48:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bufflen [2022-11-19 06:48:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bufflen [2022-11-19 06:48:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure dev_size_mb_show [2022-11-19 06:48:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_size_mb_show [2022-11-19 06:48:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-19 06:48:52,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-19 06:48:52,081 INFO L130 BoogieDeclarations]: Found specification of procedure num_parts_show [2022-11-19 06:48:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure num_parts_show [2022-11-19 06:48:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_level_show [2022-11-19 06:48:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_level_show [2022-11-19 06:48:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_scsi_host_template_3 [2022-11-19 06:48:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_scsi_host_template_3 [2022-11-19 06:48:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be16 [2022-11-19 06:48:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be16 [2022-11-19 06:48:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure fill_from_dev_buffer [2022-11-19 06:48:52,082 INFO L138 BoogieDeclarations]: Found implementation of procedure fill_from_dev_buffer [2022-11-19 06:48:52,082 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_destroy [2022-11-19 06:48:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_destroy [2022-11-19 06:48:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure map_region [2022-11-19 06:48:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure map_region [2022-11-19 06:48:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-11-19 06:48:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-11-19 06:48:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_read [2022-11-19 06:48:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_read [2022-11-19 06:48:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure fetch_to_dev_buffer [2022-11-19 06:48:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure fetch_to_dev_buffer [2022-11-19 06:48:52,083 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-19 06:48:52,083 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-19 06:48:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_set_guard [2022-11-19 06:48:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_set_guard [2022-11-19 06:48:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-19 06:48:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-19 06:48:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_info [2022-11-19 06:48:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_info [2022-11-19 06:48:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sglist [2022-11-19 06:48:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sglist [2022-11-19 06:48:52,084 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_abort [2022-11-19 06:48:52,084 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_abort [2022-11-19 06:48:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure tasklet_kill [2022-11-19 06:48:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure tasklet_kill [2022-11-19 06:48:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_resp [2022-11-19 06:48:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_resp [2022-11-19 06:48:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure pseudo_lld_bus_match [2022-11-19 06:48:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure pseudo_lld_bus_match [2022-11-19 06:48:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-19 06:48:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure host_lock_show [2022-11-19 06:48:52,085 INFO L138 BoogieDeclarations]: Found implementation of procedure host_lock_show [2022-11-19 06:48:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-19 06:48:52,085 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_bus_reset [2022-11-19 06:48:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_bus_reset [2022-11-19 06:48:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure no_lun_0_show [2022-11-19 06:48:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure no_lun_0_show [2022-11-19 06:48:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure dif_copy_prot [2022-11-19 06:48:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_copy_prot [2022-11-19 06:48:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-19 06:48:52,086 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be64 [2022-11-19 06:48:52,086 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be64 [2022-11-19 06:48:52,089 INFO L130 BoogieDeclarations]: Found specification of procedure resp_err_recov_pg [2022-11-19 06:48:52,089 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_err_recov_pg [2022-11-19 06:48:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure __xadd_wrong_size [2022-11-19 06:48:52,090 INFO L130 BoogieDeclarations]: Found specification of procedure map_show [2022-11-19 06:48:52,090 INFO L138 BoogieDeclarations]: Found implementation of procedure map_show [2022-11-19 06:48:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure no_uld_show [2022-11-19 06:48:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure no_uld_show [2022-11-19 06:48:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_spin_unlock [2022-11-19 06:48:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_spin_unlock [2022-11-19 06:48:52,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_is_err [2022-11-19 06:48:52,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_is_err [2022-11-19 06:48:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2022-11-19 06:48:52,092 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2022-11-19 06:48:52,092 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_build_sense_buffer [2022-11-19 06:48:52,092 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_build_sense_buffer [2022-11-19 06:48:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-19 06:48:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-19 06:48:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure removable_show [2022-11-19 06:48:52,093 INFO L138 BoogieDeclarations]: Found implementation of procedure removable_show [2022-11-19 06:48:52,093 INFO L130 BoogieDeclarations]: Found specification of procedure capable [2022-11-19 06:48:52,094 INFO L138 BoogieDeclarations]: Found implementation of procedure capable [2022-11-19 06:48:52,095 INFO L130 BoogieDeclarations]: Found specification of procedure num_tgts_show [2022-11-19 06:48:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure num_tgts_show [2022-11-19 06:48:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_device_create [2022-11-19 06:48:52,098 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_device_create [2022-11-19 06:48:52,098 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-19 06:48:52,099 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-19 06:48:52,100 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_pcd_m_spg [2022-11-19 06:48:52,101 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_pcd_m_spg [2022-11-19 06:48:52,101 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-19 06:48:52,101 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-19 06:48:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2022-11-19 06:48:52,106 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2022-11-19 06:48:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure find_last_bit [2022-11-19 06:48:52,106 INFO L138 BoogieDeclarations]: Found implementation of procedure find_last_bit [2022-11-19 06:48:52,106 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_ioctl [2022-11-19 06:48:52,106 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_ioctl [2022-11-19 06:48:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure max_queue_show [2022-11-19 06:48:52,107 INFO L138 BoogieDeclarations]: Found implementation of procedure max_queue_show [2022-11-19 06:48:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2022-11-19 06:48:52,107 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2022-11-19 06:48:52,107 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock [2022-11-19 06:48:52,107 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock [2022-11-19 06:48:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure check_device_access_params [2022-11-19 06:48:52,108 INFO L138 BoogieDeclarations]: Found implementation of procedure check_device_access_params [2022-11-19 06:48:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_cmd_priv [2022-11-19 06:48:52,108 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_cmd_priv [2022-11-19 06:48:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-19 06:48:52,108 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2022-11-19 06:48:52,108 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2022-11-19 06:48:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure strict_show [2022-11-19 06:48:52,109 INFO L138 BoogieDeclarations]: Found implementation of procedure strict_show [2022-11-19 06:48:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure dif_verify [2022-11-19 06:48:52,109 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_verify [2022-11-19 06:48:52,109 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sf_m_pg [2022-11-19 06:48:52,109 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sf_m_pg [2022-11-19 06:48:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure find_first_bit [2022-11-19 06:48:52,110 INFO L138 BoogieDeclarations]: Found implementation of procedure find_first_bit [2022-11-19 06:48:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be32 [2022-11-19 06:48:52,110 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be32 [2022-11-19 06:48:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure resp_read_dt0 [2022-11-19 06:48:52,110 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_read_dt0 [2022-11-19 06:48:52,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-19 06:48:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure resp_disconnect_pg [2022-11-19 06:48:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_disconnect_pg [2022-11-19 06:48:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure bus_unregister [2022-11-19 06:48:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure bus_unregister [2022-11-19 06:48:52,111 INFO L130 BoogieDeclarations]: Found specification of procedure dsense_show [2022-11-19 06:48:52,111 INFO L138 BoogieDeclarations]: Found implementation of procedure dsense_show [2022-11-19 06:48:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-19 06:48:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure resp_format_pg [2022-11-19 06:48:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_format_pg [2022-11-19 06:48:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_alloc_nonatomic [2022-11-19 06:48:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_alloc_nonatomic [2022-11-19 06:48:52,112 INFO L130 BoogieDeclarations]: Found specification of procedure lba_to_map_index [2022-11-19 06:48:52,112 INFO L138 BoogieDeclarations]: Found implementation of procedure lba_to_map_index [2022-11-19 06:48:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sglist [2022-11-19 06:48:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sglist [2022-11-19 06:48:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-11-19 06:48:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-11-19 06:48:52,113 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_same [2022-11-19 06:48:52,113 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_same [2022-11-19 06:48:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-19 06:48:52,114 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-19 06:48:52,114 INFO L130 BoogieDeclarations]: Found specification of procedure get_unaligned_be16 [2022-11-19 06:48:52,114 INFO L138 BoogieDeclarations]: Found implementation of procedure get_unaligned_be16 [2022-11-19 06:48:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure ndelay_show [2022-11-19 06:48:52,115 INFO L138 BoogieDeclarations]: Found implementation of procedure ndelay_show [2022-11-19 06:48:52,115 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be64 [2022-11-19 06:48:52,116 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be64 [2022-11-19 06:48:52,116 INFO L130 BoogieDeclarations]: Found specification of procedure resp_caching_pg [2022-11-19 06:48:52,116 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_caching_pg [2022-11-19 06:48:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-19 06:48:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-19 06:48:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_queuecommand [2022-11-19 06:48:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_queuecommand [2022-11-19 06:48:52,117 INFO L130 BoogieDeclarations]: Found specification of procedure vfree [2022-11-19 06:48:52,117 INFO L138 BoogieDeclarations]: Found implementation of procedure vfree [2022-11-19 06:48:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure list_add_tail [2022-11-19 06:48:52,118 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add_tail [2022-11-19 06:48:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_alloc [2022-11-19 06:48:52,118 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_alloc [2022-11-19 06:48:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure resp_iec_m_pg [2022-11-19 06:48:52,118 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_iec_m_pg [2022-11-19 06:48:52,118 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-19 06:48:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure resp_write_dt0 [2022-11-19 06:48:52,119 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_write_dt0 [2022-11-19 06:48:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_change_qdepth [2022-11-19 06:48:52,119 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_change_qdepth [2022-11-19 06:48:52,119 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_read_unlock_irqrestore [2022-11-19 06:48:52,119 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_read_unlock_irqrestore [2022-11-19 06:48:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-19 06:48:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-19 06:48:52,120 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_show_info [2022-11-19 06:48:52,120 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_show_info [2022-11-19 06:48:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure ptype_show [2022-11-19 06:48:52,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ptype_show [2022-11-19 06:48:52,121 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2022-11-19 06:48:52,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2022-11-19 06:48:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure root_device_unregister [2022-11-19 06:48:52,122 INFO L138 BoogieDeclarations]: Found implementation of procedure root_device_unregister [2022-11-19 06:48:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-19 06:48:52,122 INFO L130 BoogieDeclarations]: Found specification of procedure unmap_region [2022-11-19 06:48:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure unmap_region [2022-11-19 06:48:52,123 INFO L130 BoogieDeclarations]: Found specification of procedure fake_rw_show [2022-11-19 06:48:52,123 INFO L138 BoogieDeclarations]: Found implementation of procedure fake_rw_show [2022-11-19 06:48:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-11-19 06:48:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-11-19 06:48:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-11-19 06:48:52,124 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-11-19 06:48:52,124 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2022-11-19 06:48:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2022-11-19 06:48:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_fld [2022-11-19 06:48:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_fld [2022-11-19 06:48:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_count [2022-11-19 06:48:52,125 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_count [2022-11-19 06:48:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 06:48:52,125 INFO L130 BoogieDeclarations]: Found specification of procedure max_luns_show [2022-11-19 06:48:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure max_luns_show [2022-11-19 06:48:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_lock_irqsave [2022-11-19 06:48:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_lock_irqsave [2022-11-19 06:48:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_inc [2022-11-19 06:48:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_inc [2022-11-19 06:48:52,126 INFO L130 BoogieDeclarations]: Found specification of procedure hrtimer_cancel [2022-11-19 06:48:52,126 INFO L138 BoogieDeclarations]: Found implementation of procedure hrtimer_cancel [2022-11-19 06:48:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure opts_show [2022-11-19 06:48:52,127 INFO L138 BoogieDeclarations]: Found implementation of procedure opts_show [2022-11-19 06:48:52,127 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-19 06:48:52,128 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-11-19 06:48:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-11-19 06:48:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:48:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-19 06:48:52,132 INFO L130 BoogieDeclarations]: Found specification of procedure devInfoReg [2022-11-19 06:48:52,132 INFO L138 BoogieDeclarations]: Found implementation of procedure devInfoReg [2022-11-19 06:48:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure guard_show [2022-11-19 06:48:52,133 INFO L138 BoogieDeclarations]: Found implementation of procedure guard_show [2022-11-19 06:48:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_device_reset [2022-11-19 06:48:52,133 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_device_reset [2022-11-19 06:48:52,133 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_write_unlock_irqrestore [2022-11-19 06:48:52,136 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_write_unlock_irqrestore [2022-11-19 06:48:52,136 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2022-11-19 06:48:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2022-11-19 06:48:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_host_put [2022-11-19 06:48:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_host_put [2022-11-19 06:48:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_max_tgts_luns [2022-11-19 06:48:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_max_tgts_luns [2022-11-19 06:48:52,137 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_slave_configure [2022-11-19 06:48:52,137 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_slave_configure [2022-11-19 06:48:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure put_unaligned_be32 [2022-11-19 06:48:52,138 INFO L138 BoogieDeclarations]: Found implementation of procedure put_unaligned_be32 [2022-11-19 06:48:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_bidi_cmnd [2022-11-19 06:48:52,138 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_bidi_cmnd [2022-11-19 06:48:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab64 [2022-11-19 06:48:52,138 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab64 [2022-11-19 06:48:52,138 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_dec [2022-11-19 06:48:52,139 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_dec [2022-11-19 06:48:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2022-11-19 06:48:52,139 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2022-11-19 06:48:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure do_device_access [2022-11-19 06:48:52,139 INFO L138 BoogieDeclarations]: Found implementation of procedure do_device_access [2022-11-19 06:48:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure virtual_gb_show [2022-11-19 06:48:52,139 INFO L138 BoogieDeclarations]: Found implementation of procedure virtual_gb_show [2022-11-19 06:48:52,139 INFO L130 BoogieDeclarations]: Found specification of procedure vpd_use_hostno_show [2022-11-19 06:48:52,140 INFO L138 BoogieDeclarations]: Found implementation of procedure vpd_use_hostno_show [2022-11-19 06:48:52,140 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_debug_target_reset [2022-11-19 06:48:52,140 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_debug_target_reset [2022-11-19 06:48:52,140 INFO L130 BoogieDeclarations]: Found specification of procedure dix_show [2022-11-19 06:48:52,140 INFO L138 BoogieDeclarations]: Found implementation of procedure dix_show [2022-11-19 06:48:52,140 INFO L130 BoogieDeclarations]: Found specification of procedure every_nth_show [2022-11-19 06:48:52,140 INFO L138 BoogieDeclarations]: Found implementation of procedure every_nth_show [2022-11-19 06:48:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure atomic_add_return [2022-11-19 06:48:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure atomic_add_return [2022-11-19 06:48:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_in [2022-11-19 06:48:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_in [2022-11-19 06:48:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure clear_luns_changed_on_target [2022-11-19 06:48:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_luns_changed_on_target [2022-11-19 06:48:52,141 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_prot_sg_count [2022-11-19 06:48:52,141 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_prot_sg_count [2022-11-19 06:48:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure ato_show [2022-11-19 06:48:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ato_show [2022-11-19 06:48:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_buffer [2022-11-19 06:48:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_buffer [2022-11-19 06:48:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure resp_sas_sha_m_spg [2022-11-19 06:48:52,142 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_sas_sha_m_spg [2022-11-19 06:48:52,142 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-11-19 06:48:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-11-19 06:48:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure add_host_show [2022-11-19 06:48:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure add_host_show [2022-11-19 06:48:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure sdebug_add_adapter [2022-11-19 06:48:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure sdebug_add_adapter [2022-11-19 06:48:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_sg_copy_to_buffer [2022-11-19 06:48:52,143 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_sg_copy_to_buffer [2022-11-19 06:48:52,143 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock [2022-11-19 06:48:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock [2022-11-19 06:48:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure dif_store [2022-11-19 06:48:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure dif_store [2022-11-19 06:48:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 06:48:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-19 06:48:52,144 INFO L130 BoogieDeclarations]: Found specification of procedure mk_sense_invalid_opcode [2022-11-19 06:48:52,144 INFO L138 BoogieDeclarations]: Found implementation of procedure mk_sense_invalid_opcode [2022-11-19 06:48:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-11-19 06:48:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-11-19 06:48:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure sg_copy_buffer [2022-11-19 06:48:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_copy_buffer [2022-11-19 06:48:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure scsi_set_resid [2022-11-19 06:48:52,145 INFO L138 BoogieDeclarations]: Found implementation of procedure scsi_set_resid [2022-11-19 06:48:52,145 INFO L130 BoogieDeclarations]: Found specification of procedure shost_priv [2022-11-19 06:48:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure shost_priv [2022-11-19 06:48:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 06:48:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure delay_show [2022-11-19 06:48:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure delay_show [2022-11-19 06:48:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_clear_bit [2022-11-19 06:48:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_clear_bit [2022-11-19 06:48:52,146 INFO L130 BoogieDeclarations]: Found specification of procedure get_sdebug_capacity [2022-11-19 06:48:52,146 INFO L138 BoogieDeclarations]: Found implementation of procedure get_sdebug_capacity [2022-11-19 06:48:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 06:48:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 06:48:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure resp_ctrl_m_pg [2022-11-19 06:48:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure resp_ctrl_m_pg [2022-11-19 06:48:52,147 INFO L130 BoogieDeclarations]: Found specification of procedure IS_ERR [2022-11-19 06:48:52,147 INFO L138 BoogieDeclarations]: Found implementation of procedure IS_ERR [2022-11-19 06:48:53,310 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 06:48:53,314 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 06:48:54,336 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-19 06:49:39,444 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 06:49:42,618 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 06:49:42,618 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 06:49:42,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:49:42 BoogieIcfgContainer [2022-11-19 06:49:42,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 06:49:42,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 06:49:42,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 06:49:42,642 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 06:49:42,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:48:46" (1/3) ... [2022-11-19 06:49:42,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377a1730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:49:42, skipping insertion in model container [2022-11-19 06:49:42,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:48:50" (2/3) ... [2022-11-19 06:49:42,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@377a1730 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:49:42, skipping insertion in model container [2022-11-19 06:49:42,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:49:42" (3/3) ... [2022-11-19 06:49:42,648 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-43_2a-drivers--scsi--scsi_debug.ko-entry_point.cil.out.i [2022-11-19 06:49:42,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 06:49:42,673 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 06:49:42,815 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 06:49:42,829 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;@6130b583, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 06:49:42,830 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 06:49:42,845 INFO L276 IsEmpty]: Start isEmpty. Operand has 2824 states, 1838 states have (on average 1.426550598476605) internal successors, (2622), 1925 states have internal predecessors, (2622), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) [2022-11-19 06:49:42,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2022-11-19 06:49:42,920 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:49:42,922 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:49:42,923 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:49:42,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:49:42,930 INFO L85 PathProgramCache]: Analyzing trace with hash 819847697, now seen corresponding path program 1 times [2022-11-19 06:49:42,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:49:42,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081918464] [2022-11-19 06:49:42,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:49:42,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:49:44,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:49:46,065 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-19 06:49:46,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:49:46,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081918464] [2022-11-19 06:49:46,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081918464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:49:46,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:49:46,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:49:46,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194477917] [2022-11-19 06:49:46,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:49:46,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:49:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:49:46,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:49:46,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:49:46,132 INFO L87 Difference]: Start difference. First operand has 2824 states, 1838 states have (on average 1.426550598476605) internal successors, (2622), 1925 states have internal predecessors, (2622), 829 states have call successors, (829), 156 states have call predecessors, (829), 155 states have return successors, (798), 786 states have call predecessors, (798), 798 states have call successors, (798) Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-19 06:49:48,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:52,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:54,162 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:56,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:49:59,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:00,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:50:03,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:10,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:10,358 INFO L93 Difference]: Finished difference Result 8076 states and 12235 transitions. [2022-11-19 06:50:10,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:10,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 907 [2022-11-19 06:50:10,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:10,431 INFO L225 Difference]: With dead ends: 8076 [2022-11-19 06:50:10,431 INFO L226 Difference]: Without dead ends: 5292 [2022-11-19 06:50:10,459 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 [2022-11-19 06:50:10,462 INFO L413 NwaCegarLoop]: 4572 mSDtfsCounter, 4105 mSDsluCounter, 3628 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 2 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4111 SdHoareTripleChecker+Valid, 8200 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:10,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4111 Valid, 8200 Invalid, 750 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 742 Invalid, 6 Unknown, 0 Unchecked, 23.7s Time] [2022-11-19 06:50:10,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5292 states. [2022-11-19 06:50:10,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5292 to 5283. [2022-11-19 06:50:10,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5283 states, 3508 states have (on average 1.4181870011402509) internal successors, (4975), 3616 states have internal predecessors, (4975), 1469 states have call successors, (1469), 306 states have call predecessors, (1469), 305 states have return successors, (1469), 1440 states have call predecessors, (1469), 1467 states have call successors, (1469) [2022-11-19 06:50:10,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5283 states to 5283 states and 7913 transitions. [2022-11-19 06:50:10,879 INFO L78 Accepts]: Start accepts. Automaton has 5283 states and 7913 transitions. Word has length 907 [2022-11-19 06:50:10,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:10,881 INFO L495 AbstractCegarLoop]: Abstraction has 5283 states and 7913 transitions. [2022-11-19 06:50:10,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 2 states have call successors, (83), 2 states have call predecessors, (83), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-19 06:50:10,882 INFO L276 IsEmpty]: Start isEmpty. Operand 5283 states and 7913 transitions. [2022-11-19 06:50:10,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2022-11-19 06:50:10,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:10,917 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:50:10,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 06:50:10,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:50:10,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:10,919 INFO L85 PathProgramCache]: Analyzing trace with hash 695055476, now seen corresponding path program 1 times [2022-11-19 06:50:10,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:10,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018109318] [2022-11-19 06:50:10,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:10,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:11,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:13,217 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-19 06:50:13,217 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:13,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018109318] [2022-11-19 06:50:13,218 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018109318] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:13,218 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:13,218 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:50:13,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734824570] [2022-11-19 06:50:13,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:13,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:13,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:13,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:13,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:13,224 INFO L87 Difference]: Start difference. First operand 5283 states and 7913 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-19 06:50:15,416 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:18,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:20,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:23,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:26,587 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:29,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:30,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:36,514 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:50:37,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:50:37,084 INFO L93 Difference]: Finished difference Result 15410 states and 23086 transitions. [2022-11-19 06:50:37,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:50:37,085 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) Word has length 914 [2022-11-19 06:50:37,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:50:37,159 INFO L225 Difference]: With dead ends: 15410 [2022-11-19 06:50:37,159 INFO L226 Difference]: Without dead ends: 10288 [2022-11-19 06:50:37,187 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 [2022-11-19 06:50:37,189 INFO L413 NwaCegarLoop]: 4485 mSDtfsCounter, 3734 mSDsluCounter, 3754 mSDsCounter, 0 mSdLazyCounter, 742 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3740 SdHoareTripleChecker+Valid, 8239 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 742 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:50:37,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3740 Valid, 8239 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 742 Invalid, 7 Unknown, 0 Unchecked, 23.3s Time] [2022-11-19 06:50:37,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10288 states. [2022-11-19 06:50:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10288 to 10278. [2022-11-19 06:50:37,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10278 states, 6855 states have (on average 1.424215900802334) internal successors, (9763), 7071 states have internal predecessors, (9763), 2817 states have call successors, (2817), 606 states have call predecessors, (2817), 605 states have return successors, (2821), 2758 states have call predecessors, (2821), 2815 states have call successors, (2821) [2022-11-19 06:50:37,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10278 states to 10278 states and 15401 transitions. [2022-11-19 06:50:37,695 INFO L78 Accepts]: Start accepts. Automaton has 10278 states and 15401 transitions. Word has length 914 [2022-11-19 06:50:37,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:50:37,698 INFO L495 AbstractCegarLoop]: Abstraction has 10278 states and 15401 transitions. [2022-11-19 06:50:37,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 3 states have internal predecessors, (122), 2 states have call successors, (84), 2 states have call predecessors, (84), 1 states have return successors, (81), 1 states have call predecessors, (81), 1 states have call successors, (81) [2022-11-19 06:50:37,700 INFO L276 IsEmpty]: Start isEmpty. Operand 10278 states and 15401 transitions. [2022-11-19 06:50:37,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 919 [2022-11-19 06:50:37,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:50:37,743 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:50:37,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 06:50:37,743 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:50:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:50:37,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1415059087, now seen corresponding path program 1 times [2022-11-19 06:50:37,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:50:37,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848688827] [2022-11-19 06:50:37,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:37,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:50:38,389 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:50:38,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [500686067] [2022-11-19 06:50:38,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:50:38,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:50:38,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:50:38,395 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:50:38,424 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 06:50:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:50:42,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 14460 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:50:42,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:50:48,429 INFO L134 CoverageAnalysis]: Checked inductivity of 17866 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17866 trivial. 0 not checked. [2022-11-19 06:50:48,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:50:48,430 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:50:48,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848688827] [2022-11-19 06:50:48,431 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:50:48,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [500686067] [2022-11-19 06:50:48,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [500686067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:50:48,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:50:48,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:50:48,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448469368] [2022-11-19 06:50:48,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:50:48,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:50:48,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:50:48,438 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:50:48,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:50:48,438 INFO L87 Difference]: Start difference. First operand 10278 states and 15401 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2022-11-19 06:50:50,585 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:54,757 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:56,778 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:50:59,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:03,657 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:06,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:51:08,668 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:10,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:12,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:12,129 INFO L93 Difference]: Finished difference Result 19219 states and 28892 transitions. [2022-11-19 06:51:12,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:12,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) Word has length 918 [2022-11-19 06:51:12,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:12,275 INFO L225 Difference]: With dead ends: 19219 [2022-11-19 06:51:12,275 INFO L226 Difference]: Without dead ends: 19215 [2022-11-19 06:51:12,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 917 GetRequests, 916 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:12,296 INFO L413 NwaCegarLoop]: 4456 mSDtfsCounter, 3592 mSDsluCounter, 3334 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 3 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3596 SdHoareTripleChecker+Valid, 7790 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:12,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3596 Valid, 7790 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 706 Invalid, 8 Unknown, 0 Unchecked, 23.1s Time] [2022-11-19 06:51:12,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19215 states. [2022-11-19 06:51:13,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19215 to 19065. [2022-11-19 06:51:13,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19065 states, 12865 states have (on average 1.4298484259619122) internal successors, (18395), 13242 states have internal predecessors, (18395), 5070 states have call successors, (5070), 1134 states have call predecessors, (5070), 1129 states have return successors, (5162), 4946 states have call predecessors, (5162), 5068 states have call successors, (5162) [2022-11-19 06:51:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19065 states to 19065 states and 28627 transitions. [2022-11-19 06:51:13,194 INFO L78 Accepts]: Start accepts. Automaton has 19065 states and 28627 transitions. Word has length 918 [2022-11-19 06:51:13,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:13,196 INFO L495 AbstractCegarLoop]: Abstraction has 19065 states and 28627 transitions. [2022-11-19 06:51:13,196 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 2 states have internal predecessors, (117), 2 states have call successors, (87), 2 states have call predecessors, (87), 1 states have return successors, (85), 1 states have call predecessors, (85), 1 states have call successors, (85) [2022-11-19 06:51:13,196 INFO L276 IsEmpty]: Start isEmpty. Operand 19065 states and 28627 transitions. [2022-11-19 06:51:13,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 937 [2022-11-19 06:51:13,208 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:13,209 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 20, 20, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:13,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 06:51:13,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:13,423 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:13,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:13,424 INFO L85 PathProgramCache]: Analyzing trace with hash 266511974, now seen corresponding path program 1 times [2022-11-19 06:51:13,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:13,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592168628] [2022-11-19 06:51:13,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:13,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:14,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:15,326 INFO L134 CoverageAnalysis]: Checked inductivity of 17860 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17860 trivial. 0 not checked. [2022-11-19 06:51:15,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:15,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592168628] [2022-11-19 06:51:15,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592168628] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:15,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:15,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:51:15,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291946343] [2022-11-19 06:51:15,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:15,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:15,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:15,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:15,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:15,330 INFO L87 Difference]: Start difference. First operand 19065 states and 28627 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-19 06:51:17,516 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:22,406 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:23,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:25,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.63s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:27,251 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-19 06:51:29,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:33,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:38,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:38,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:51:38,863 INFO L93 Difference]: Finished difference Result 43451 states and 64964 transitions. [2022-11-19 06:51:38,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:51:38,864 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) Word has length 936 [2022-11-19 06:51:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:51:38,997 INFO L225 Difference]: With dead ends: 43451 [2022-11-19 06:51:38,997 INFO L226 Difference]: Without dead ends: 24547 [2022-11-19 06:51:39,091 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 [2022-11-19 06:51:39,092 INFO L413 NwaCegarLoop]: 3945 mSDtfsCounter, 1168 mSDsluCounter, 3667 mSDsCounter, 0 mSdLazyCounter, 823 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 7612 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 823 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:51:39,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 7612 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 823 Invalid, 6 Unknown, 0 Unchecked, 22.9s Time] [2022-11-19 06:51:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24547 states. [2022-11-19 06:51:40,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24547 to 24543. [2022-11-19 06:51:40,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24543 states, 16995 states have (on average 1.4462488967343337) internal successors, (24579), 17498 states have internal predecessors, (24579), 5944 states have call successors, (5944), 1612 states have call predecessors, (5944), 1603 states have return successors, (6042), 5780 states have call predecessors, (6042), 5942 states have call successors, (6042) [2022-11-19 06:51:40,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24543 states to 24543 states and 36565 transitions. [2022-11-19 06:51:40,183 INFO L78 Accepts]: Start accepts. Automaton has 24543 states and 36565 transitions. Word has length 936 [2022-11-19 06:51:40,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:51:40,184 INFO L495 AbstractCegarLoop]: Abstraction has 24543 states and 36565 transitions. [2022-11-19 06:51:40,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (84), 2 states have call predecessors, (84), 2 states have call successors, (84) [2022-11-19 06:51:40,185 INFO L276 IsEmpty]: Start isEmpty. Operand 24543 states and 36565 transitions. [2022-11-19 06:51:40,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2022-11-19 06:51:40,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:51:40,198 INFO L195 NwaCegarLoop]: trace histogram [58, 58, 58, 58, 58, 58, 58, 58, 58, 21, 21, 20, 20, 20, 20, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:51:40,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 06:51:40,198 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:51:40,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:51:40,199 INFO L85 PathProgramCache]: Analyzing trace with hash 576217146, now seen corresponding path program 1 times [2022-11-19 06:51:40,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:51:40,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779277401] [2022-11-19 06:51:40,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:40,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:51:41,051 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:51:41,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2141083277] [2022-11-19 06:51:41,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:51:41,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:51:41,052 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:51:41,053 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:51:41,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 06:51:45,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:51:45,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 14765 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:51:45,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:51:51,689 INFO L134 CoverageAnalysis]: Checked inductivity of 17929 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 17928 trivial. 0 not checked. [2022-11-19 06:51:51,690 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:51:51,690 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:51:51,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779277401] [2022-11-19 06:51:51,690 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:51:51,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141083277] [2022-11-19 06:51:51,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141083277] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:51:51,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:51:51,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:51:51,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256356561] [2022-11-19 06:51:51,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:51:51,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:51:51,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:51:51,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:51:51,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:51:51,694 INFO L87 Difference]: Start difference. First operand 24543 states and 36565 transitions. Second operand has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 1 states have call predecessors, (88), 1 states have call successors, (88) [2022-11-19 06:51:53,851 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:57,483 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:51:59,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:01,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:05,397 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:08,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:09,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:09,334 INFO L93 Difference]: Finished difference Result 48910 states and 72855 transitions. [2022-11-19 06:52:09,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:09,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 1 states have call predecessors, (88), 1 states have call successors, (88) Word has length 943 [2022-11-19 06:52:09,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:09,451 INFO L225 Difference]: With dead ends: 48910 [2022-11-19 06:52:09,451 INFO L226 Difference]: Without dead ends: 24528 [2022-11-19 06:52:09,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 941 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:09,537 INFO L413 NwaCegarLoop]: 3768 mSDtfsCounter, 3773 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 378 mSolverCounterSat, 0 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3779 SdHoareTripleChecker+Valid, 3839 SdHoareTripleChecker+Invalid, 384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 378 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.9s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:09,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3779 Valid, 3839 Invalid, 384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 378 Invalid, 6 Unknown, 0 Unchecked, 16.9s Time] [2022-11-19 06:52:09,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24528 states. [2022-11-19 06:52:10,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24528 to 24528. [2022-11-19 06:52:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24528 states, 16966 states have (on average 1.4451844866202994) internal successors, (24519), 17470 states have internal predecessors, (24519), 5950 states have call successors, (5950), 1619 states have call predecessors, (5950), 1611 states have return successors, (6052), 5786 states have call predecessors, (6052), 5948 states have call successors, (6052) [2022-11-19 06:52:10,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24528 states to 24528 states and 36521 transitions. [2022-11-19 06:52:10,875 INFO L78 Accepts]: Start accepts. Automaton has 24528 states and 36521 transitions. Word has length 943 [2022-11-19 06:52:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:10,876 INFO L495 AbstractCegarLoop]: Abstraction has 24528 states and 36521 transitions. [2022-11-19 06:52:10,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.333333333333336) internal successors, (133), 2 states have internal predecessors, (133), 2 states have call successors, (90), 2 states have call predecessors, (90), 1 states have return successors, (88), 1 states have call predecessors, (88), 1 states have call successors, (88) [2022-11-19 06:52:10,877 INFO L276 IsEmpty]: Start isEmpty. Operand 24528 states and 36521 transitions. [2022-11-19 06:52:10,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 984 [2022-11-19 06:52:10,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:10,892 INFO L195 NwaCegarLoop]: trace histogram [59, 59, 59, 59, 59, 59, 59, 59, 59, 20, 20, 20, 20, 20, 20, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:10,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 06:52:11,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:52:11,109 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:11,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:11,109 INFO L85 PathProgramCache]: Analyzing trace with hash -371422881, now seen corresponding path program 1 times [2022-11-19 06:52:11,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:11,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978962158] [2022-11-19 06:52:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:11,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:13,211 INFO L134 CoverageAnalysis]: Checked inductivity of 18459 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 18452 trivial. 0 not checked. [2022-11-19 06:52:13,212 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:13,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978962158] [2022-11-19 06:52:13,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978962158] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:13,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:13,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:52:13,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516554583] [2022-11-19 06:52:13,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:13,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:52:13,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:13,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:52:13,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:52:13,215 INFO L87 Difference]: Start difference. First operand 24528 states and 36521 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-19 06:52:15,417 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:21,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:23,697 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:25,712 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:28,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:30,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:36,890 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:39,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.42s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:40,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:42,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:44,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.27s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:52:45,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:52:45,075 INFO L93 Difference]: Finished difference Result 72491 states and 107962 transitions. [2022-11-19 06:52:45,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:52:45,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) Word has length 983 [2022-11-19 06:52:45,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:52:45,293 INFO L225 Difference]: With dead ends: 72491 [2022-11-19 06:52:45,293 INFO L226 Difference]: Without dead ends: 48124 [2022-11-19 06:52:45,380 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 [2022-11-19 06:52:45,382 INFO L413 NwaCegarLoop]: 6344 mSDtfsCounter, 3743 mSDsluCounter, 3744 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 1 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3749 SdHoareTripleChecker+Valid, 10088 SdHoareTripleChecker+Invalid, 978 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.3s IncrementalHoareTripleChecker+Time [2022-11-19 06:52:45,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3749 Valid, 10088 Invalid, 978 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 970 Invalid, 7 Unknown, 0 Unchecked, 30.3s Time] [2022-11-19 06:52:45,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48124 states. [2022-11-19 06:52:47,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48124 to 48112. [2022-11-19 06:52:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48112 states, 33314 states have (on average 1.4462088011046408) internal successors, (48179), 34278 states have internal predecessors, (48179), 11634 states have call successors, (11634), 3179 states have call predecessors, (11634), 3163 states have return successors, (11840), 11318 states have call predecessors, (11840), 11632 states have call successors, (11840) [2022-11-19 06:52:48,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48112 states to 48112 states and 71653 transitions. [2022-11-19 06:52:48,142 INFO L78 Accepts]: Start accepts. Automaton has 48112 states and 71653 transitions. Word has length 983 [2022-11-19 06:52:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:52:48,144 INFO L495 AbstractCegarLoop]: Abstraction has 48112 states and 71653 transitions. [2022-11-19 06:52:48,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (95), 2 states have call predecessors, (95), 1 states have return successors, (89), 2 states have call predecessors, (89), 2 states have call successors, (89) [2022-11-19 06:52:48,144 INFO L276 IsEmpty]: Start isEmpty. Operand 48112 states and 71653 transitions. [2022-11-19 06:52:48,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1231 [2022-11-19 06:52:48,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:52:48,196 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:52:48,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 06:52:48,197 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:52:48,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:52:48,198 INFO L85 PathProgramCache]: Analyzing trace with hash 368092815, now seen corresponding path program 1 times [2022-11-19 06:52:48,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:52:48,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507533241] [2022-11-19 06:52:48,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:52:48,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:52:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:52:51,533 INFO L134 CoverageAnalysis]: Checked inductivity of 30633 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 30615 trivial. 0 not checked. [2022-11-19 06:52:51,534 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:52:51,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507533241] [2022-11-19 06:52:51,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507533241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:52:51,534 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:52:51,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:52:51,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538590487] [2022-11-19 06:52:51,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:52:51,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:52:51,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:52:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:52:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:52:51,538 INFO L87 Difference]: Start difference. First operand 48112 states and 71653 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-11-19 06:52:53,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:01,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:03,796 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:05,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:11,645 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:14,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:16,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:17,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:17,507 INFO L93 Difference]: Finished difference Result 96159 states and 143195 transitions. [2022-11-19 06:53:17,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:53:17,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) Word has length 1230 [2022-11-19 06:53:17,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:17,899 INFO L225 Difference]: With dead ends: 96159 [2022-11-19 06:53:17,900 INFO L226 Difference]: Without dead ends: 48112 [2022-11-19 06:53:18,045 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:53:18,046 INFO L413 NwaCegarLoop]: 3755 mSDtfsCounter, 3 mSDsluCounter, 7499 mSDsCounter, 0 mSdLazyCounter, 1090 mSolverCounterSat, 7 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11254 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 1090 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:18,047 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11254 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 1090 Invalid, 7 Unknown, 0 Unchecked, 24.0s Time] [2022-11-19 06:53:18,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48112 states. [2022-11-19 06:53:19,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48112 to 48112. [2022-11-19 06:53:19,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48112 states, 33314 states have (on average 1.4394849012427209) internal successors, (47955), 34278 states have internal predecessors, (47955), 11634 states have call successors, (11634), 3179 states have call predecessors, (11634), 3163 states have return successors, (11840), 11318 states have call predecessors, (11840), 11632 states have call successors, (11840) [2022-11-19 06:53:19,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48112 states to 48112 states and 71429 transitions. [2022-11-19 06:53:20,199 INFO L78 Accepts]: Start accepts. Automaton has 48112 states and 71429 transitions. Word has length 1230 [2022-11-19 06:53:20,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:20,214 INFO L495 AbstractCegarLoop]: Abstraction has 48112 states and 71429 transitions. [2022-11-19 06:53:20,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (116), 2 states have call predecessors, (116), 1 states have return successors, (110), 2 states have call predecessors, (110), 2 states have call successors, (110) [2022-11-19 06:53:20,214 INFO L276 IsEmpty]: Start isEmpty. Operand 48112 states and 71429 transitions. [2022-11-19 06:53:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1252 [2022-11-19 06:53:20,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:20,298 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:20,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 06:53:20,298 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:20,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:20,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1896635363, now seen corresponding path program 1 times [2022-11-19 06:53:20,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:20,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026285355] [2022-11-19 06:53:20,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:20,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:53:21,149 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:53:21,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1088172835] [2022-11-19 06:53:21,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:21,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:53:21,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:53:21,155 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:53:21,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 06:53:26,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:53:26,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 16510 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-19 06:53:26,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:53:27,060 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 794 proven. 0 refuted. 0 times theorem prover too weak. 29851 trivial. 0 not checked. [2022-11-19 06:53:27,062 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:53:27,063 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:53:27,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026285355] [2022-11-19 06:53:27,063 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:53:27,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088172835] [2022-11-19 06:53:27,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088172835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:53:27,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:53:27,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 06:53:27,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247836463] [2022-11-19 06:53:27,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:53:27,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:53:27,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:53:27,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:53:27,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:27,068 INFO L87 Difference]: Start difference. First operand 48112 states and 71429 transitions. Second operand has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2022-11-19 06:53:29,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:35,734 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:37,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:40,360 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:45,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:49,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:51,110 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:52,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.71s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:53:54,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:53:54,102 INFO L93 Difference]: Finished difference Result 132193 states and 196728 transitions. [2022-11-19 06:53:54,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:53:54,103 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) Word has length 1251 [2022-11-19 06:53:54,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:53:54,706 INFO L225 Difference]: With dead ends: 132193 [2022-11-19 06:53:54,707 INFO L226 Difference]: Without dead ends: 84242 [2022-11-19 06:53:54,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1249 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:53:54,892 INFO L413 NwaCegarLoop]: 4400 mSDtfsCounter, 3679 mSDsluCounter, 3615 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 46 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3685 SdHoareTripleChecker+Valid, 8015 SdHoareTripleChecker+Invalid, 881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.0s IncrementalHoareTripleChecker+Time [2022-11-19 06:53:54,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3685 Valid, 8015 Invalid, 881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 829 Invalid, 6 Unknown, 0 Unchecked, 24.0s Time] [2022-11-19 06:53:54,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84242 states. [2022-11-19 06:53:58,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84242 to 84234. [2022-11-19 06:53:58,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84234 states, 57904 states have (on average 1.4339078474716773) internal successors, (83029), 59562 states have internal predecessors, (83029), 20962 states have call successors, (20962), 5391 states have call predecessors, (20962), 5367 states have return successors, (21316), 20404 states have call predecessors, (21316), 20960 states have call successors, (21316) [2022-11-19 06:53:59,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84234 states to 84234 states and 125307 transitions. [2022-11-19 06:53:59,243 INFO L78 Accepts]: Start accepts. Automaton has 84234 states and 125307 transitions. Word has length 1251 [2022-11-19 06:53:59,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:53:59,246 INFO L495 AbstractCegarLoop]: Abstraction has 84234 states and 125307 transitions. [2022-11-19 06:53:59,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 3 states have call successors, (121), 3 states have call predecessors, (121), 3 states have return successors, (115), 3 states have call predecessors, (115), 3 states have call successors, (115) [2022-11-19 06:53:59,247 INFO L276 IsEmpty]: Start isEmpty. Operand 84234 states and 125307 transitions. [2022-11-19 06:53:59,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1251 [2022-11-19 06:53:59,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:53:59,326 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:53:59,375 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 06:53:59,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 06:53:59,552 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:53:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:53:59,553 INFO L85 PathProgramCache]: Analyzing trace with hash 438347951, now seen corresponding path program 1 times [2022-11-19 06:53:59,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:53:59,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296036803] [2022-11-19 06:53:59,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:53:59,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:00,635 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:54:00,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [693566265] [2022-11-19 06:54:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:00,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:00,636 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:54:00,637 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:54:00,677 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 06:54:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:05,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 16509 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:54:05,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:54:05,949 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11050 proven. 0 refuted. 0 times theorem prover too weak. 19595 trivial. 0 not checked. [2022-11-19 06:54:05,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:54:05,950 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:05,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296036803] [2022-11-19 06:54:05,950 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:54:05,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693566265] [2022-11-19 06:54:05,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693566265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:05,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:05,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 06:54:05,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631376161] [2022-11-19 06:54:05,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:05,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 06:54:05,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:05,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 06:54:05,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 06:54:05,954 INFO L87 Difference]: Start difference. First operand 84234 states and 125307 transitions. Second operand has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-19 06:54:08,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.23s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:17,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:19,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:21,328 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:28,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:31,259 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:33,171 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.20s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:54:34,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:54:34,693 INFO L93 Difference]: Finished difference Result 168379 states and 250471 transitions. [2022-11-19 06:54:34,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 06:54:34,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) Word has length 1250 [2022-11-19 06:54:34,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:54:35,440 INFO L225 Difference]: With dead ends: 168379 [2022-11-19 06:54:35,440 INFO L226 Difference]: Without dead ends: 84234 [2022-11-19 06:54:35,751 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1250 GetRequests, 1247 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 06:54:35,754 INFO L413 NwaCegarLoop]: 3748 mSDtfsCounter, 3 mSDsluCounter, 7492 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 1 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 11240 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-19 06:54:35,755 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 11240 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1092 Invalid, 6 Unknown, 0 Unchecked, 25.1s Time] [2022-11-19 06:54:35,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84234 states. [2022-11-19 06:54:39,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84234 to 84234. [2022-11-19 06:54:39,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84234 states, 57904 states have (on average 1.4334933683337938) internal successors, (83005), 59562 states have internal predecessors, (83005), 20962 states have call successors, (20962), 5391 states have call predecessors, (20962), 5367 states have return successors, (21316), 20404 states have call predecessors, (21316), 20960 states have call successors, (21316) [2022-11-19 06:54:39,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84234 states to 84234 states and 125283 transitions. [2022-11-19 06:54:39,452 INFO L78 Accepts]: Start accepts. Automaton has 84234 states and 125283 transitions. Word has length 1250 [2022-11-19 06:54:39,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:54:39,453 INFO L495 AbstractCegarLoop]: Abstraction has 84234 states and 125283 transitions. [2022-11-19 06:54:39,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.75) internal successors, (211), 4 states have internal predecessors, (211), 2 states have call successors, (121), 2 states have call predecessors, (121), 2 states have return successors, (115), 2 states have call predecessors, (115), 2 states have call successors, (115) [2022-11-19 06:54:39,454 INFO L276 IsEmpty]: Start isEmpty. Operand 84234 states and 125283 transitions. [2022-11-19 06:54:39,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1258 [2022-11-19 06:54:39,501 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:54:39,502 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 20, 20, 20, 20, 20, 20, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:54:39,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 06:54:39,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:39,719 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:54:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:54:39,720 INFO L85 PathProgramCache]: Analyzing trace with hash 213963122, now seen corresponding path program 1 times [2022-11-19 06:54:39,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:54:39,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702925355] [2022-11-19 06:54:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:39,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:54:40,740 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:54:40,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873029129] [2022-11-19 06:54:40,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:54:40,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:54:40,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:54:40,743 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:54:40,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 06:54:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:54:45,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 16528 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:54:45,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 06:54:52,725 INFO L134 CoverageAnalysis]: Checked inductivity of 30645 backedges. 11038 proven. 0 refuted. 0 times theorem prover too weak. 19607 trivial. 0 not checked. [2022-11-19 06:54:52,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 06:54:52,725 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 06:54:52,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702925355] [2022-11-19 06:54:52,726 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-11-19 06:54:52,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873029129] [2022-11-19 06:54:52,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873029129] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 06:54:52,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 06:54:52,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-19 06:54:52,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7814356] [2022-11-19 06:54:52,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 06:54:52,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 06:54:52,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 06:54:52,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 06:54:52,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:54:52,730 INFO L87 Difference]: Start difference. First operand 84234 states and 125283 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-19 06:54:54,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:02,650 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:04,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:07,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:13,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:18,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-19 06:55:20,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 06:55:20,517 INFO L93 Difference]: Finished difference Result 250286 states and 372651 transitions. [2022-11-19 06:55:20,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 06:55:20,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) Word has length 1257 [2022-11-19 06:55:20,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 06:55:21,492 INFO L225 Difference]: With dead ends: 250286 [2022-11-19 06:55:21,492 INFO L226 Difference]: Without dead ends: 166213 [2022-11-19 06:55:21,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1256 GetRequests, 1255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 06:55:21,843 INFO L413 NwaCegarLoop]: 4489 mSDtfsCounter, 3776 mSDsluCounter, 3496 mSDsCounter, 0 mSdLazyCounter, 737 mSolverCounterSat, 3 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3782 SdHoareTripleChecker+Valid, 7985 SdHoareTripleChecker+Invalid, 746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 737 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-11-19 06:55:21,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3782 Valid, 7985 Invalid, 746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 737 Invalid, 6 Unknown, 0 Unchecked, 21.7s Time] [2022-11-19 06:55:21,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166213 states. [2022-11-19 06:55:28,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166213 to 166169. [2022-11-19 06:55:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166169 states, 114499 states have (on average 1.4350693019153005) internal successors, (164314), 117634 states have internal predecessors, (164314), 41106 states have call successors, (41106), 10611 states have call predecessors, (41106), 10563 states have return successors, (41792), 40071 states have call predecessors, (41792), 41104 states have call successors, (41792) [2022-11-19 06:55:30,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166169 states to 166169 states and 247212 transitions. [2022-11-19 06:55:30,440 INFO L78 Accepts]: Start accepts. Automaton has 166169 states and 247212 transitions. Word has length 1257 [2022-11-19 06:55:30,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 06:55:30,442 INFO L495 AbstractCegarLoop]: Abstraction has 166169 states and 247212 transitions. [2022-11-19 06:55:30,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (122), 2 states have call predecessors, (122), 2 states have return successors, (116), 2 states have call predecessors, (116), 2 states have call successors, (116) [2022-11-19 06:55:30,443 INFO L276 IsEmpty]: Start isEmpty. Operand 166169 states and 247212 transitions. [2022-11-19 06:55:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1275 [2022-11-19 06:55:30,519 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 06:55:30,520 INFO L195 NwaCegarLoop]: trace histogram [77, 77, 77, 77, 77, 77, 77, 77, 77, 21, 21, 20, 20, 20, 20, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 06:55:30,568 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 06:55:30,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:55:30,735 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 06:55:30,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 06:55:30,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1932431485, now seen corresponding path program 1 times [2022-11-19 06:55:30,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 06:55:30,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801096713] [2022-11-19 06:55:30,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:55:30,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 06:55:31,424 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-11-19 06:55:31,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1394993604] [2022-11-19 06:55:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 06:55:31,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 06:55:31,425 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 06:55:31,427 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 06:55:31,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0878703e-f55c-4869-861d-1f9663731dd4/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 06:55:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 06:55:36,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 16606 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 06:55:36,723 INFO L286 TraceCheckSpWp]: Computing forward predicates...