./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro --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 Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 --- 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 [2022-11-18 20:36:23,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:36:23,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:36:23,838 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:36:23,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:36:23,846 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:36:23,849 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:36:23,856 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:36:23,858 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:36:23,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:36:23,867 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:36:23,869 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:36:23,870 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:36:23,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:36:23,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:36:23,877 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:36:23,878 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:36:23,879 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:36:23,881 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:36:23,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:36:23,884 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:36:23,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:36:23,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:36:23,888 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:36:23,891 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:36:23,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:36:23,892 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:36:23,893 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:36:23,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:36:23,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:36:23,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:36:23,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:36:23,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:36:23,898 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:36:23,899 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:36:23,900 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:36:23,900 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:36:23,901 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:36:23,901 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:36:23,902 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:36:23,903 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:36:23,904 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-18 20:36:23,926 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:36:23,926 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:36:23,926 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:36:23,927 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:36:23,927 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:36:23,928 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:36:23,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:36:23,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:36:23,929 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:36:23,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:36:23,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:36:23,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:36:23,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:36:23,930 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:36:23,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:36:23,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:36:23,931 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:36:23,931 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:36:23,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:36:23,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:36:23,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:36:23,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:36:23,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:36:23,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:36:23,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:36:23,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:36:23,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:36:23,934 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:36:23,934 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:36:23,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:36:23,934 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_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 [2022-11-18 20:36:24,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:36:24,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:36:24,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:36:24,231 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:36:24,232 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:36:24,234 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-11-18 20:36:24,317 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/data/acab04e5d/b3125b179aa04422bd138e87c0644ae3/FLAGaf235038c [2022-11-18 20:36:25,397 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:36:25,397 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-11-18 20:36:25,445 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/data/acab04e5d/b3125b179aa04422bd138e87c0644ae3/FLAGaf235038c [2022-11-18 20:36:25,768 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/data/acab04e5d/b3125b179aa04422bd138e87c0644ae3 [2022-11-18 20:36:25,773 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:36:25,775 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:36:25,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:36:25,779 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:36:25,782 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:36:25,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:36:25" (1/1) ... [2022-11-18 20:36:25,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@770b9e96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:25, skipping insertion in model container [2022-11-18 20:36:25,786 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:36:25" (1/1) ... [2022-11-18 20:36:25,794 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:36:25,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:36:28,261 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_2507ffef-3f65-470d-8d6a-80ee48dc5cce/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-11-18 20:36:28,480 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:36:28,523 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:36:28,999 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_2507ffef-3f65-470d-8d6a-80ee48dc5cce/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-11-18 20:36:29,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:36:29,158 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:36:29,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29 WrapperNode [2022-11-18 20:36:29,159 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:36:29,160 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:36:29,160 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:36:29,160 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:36:29,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,282 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,552 INFO L138 Inliner]: procedures = 341, calls = 1917, calls flagged for inlining = 158, calls inlined = 154, statements flattened = 4980 [2022-11-18 20:36:29,553 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:36:29,554 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:36:29,554 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:36:29,554 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:36:29,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,623 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,624 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,777 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,810 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,848 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,870 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:36:29,918 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:36:29,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:36:29,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:36:29,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (1/1) ... [2022-11-18 20:36:29,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:36:29,938 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:36:29,956 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:36:29,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:36:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure queue_iso [2022-11-18 20:36:30,005 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_iso [2022-11-18 20:36:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-11-18 20:36:30,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-11-18 20:36:30,005 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_channel [2022-11-18 20:36:30,006 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_channel [2022-11-18 20:36:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_register [2022-11-18 20:36:30,006 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_register [2022-11-18 20:36:30,006 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_establish_pp_connection [2022-11-18 20:36:30,006 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_establish_pp_connection [2022-11-18 20:36:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-18 20:36:30,007 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-18 20:36:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-11-18 20:36:30,007 INFO L130 BoogieDeclarations]: Found specification of procedure node_req [2022-11-18 20:36:30,007 INFO L138 BoogieDeclarations]: Found implementation of procedure node_req [2022-11-18 20:36:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 20:36:30,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 20:36:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_lock [2022-11-18 20:36:30,080 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_lock [2022-11-18 20:36:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-11-18 20:36:30,080 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-11-18 20:36:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-11-18 20:36:30,080 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-11-18 20:36:30,080 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-18 20:36:30,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-18 20:36:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_read [2022-11-18 20:36:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_read [2022-11-18 20:36:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-11-18 20:36:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-11-18 20:36:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-18 20:36:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-18 20:36:30,081 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-18 20:36:30,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-18 20:36:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure pad_operands [2022-11-18 20:36:30,082 INFO L138 BoogieDeclarations]: Found implementation of procedure pad_operands [2022-11-18 20:36:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_set_pids [2022-11-18 20:36:30,082 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_set_pids [2022-11-18 20:36:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_ca_io_poll [2022-11-18 20:36:30,082 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_ca_io_poll [2022-11-18 20:36:30,082 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-11-18 20:36:30,082 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-11-18 20:36:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2022-11-18 20:36:30,083 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2022-11-18 20:36:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure clear_operands [2022-11-18 20:36:30,083 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_operands [2022-11-18 20:36:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-18 20:36:30,083 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-18 20:36:30,083 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2022-11-18 20:36:30,083 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2022-11-18 20:36:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:36:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-11-18 20:36:30,084 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-11-18 20:36:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure avc_write [2022-11-18 20:36:30,084 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_write [2022-11-18 20:36:30,084 INFO L130 BoogieDeclarations]: Found specification of procedure get_opcr [2022-11-18 20:36:30,084 INFO L138 BoogieDeclarations]: Found implementation of procedure get_opcr [2022-11-18 20:36:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:36:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-11-18 20:36:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-11-18 20:36:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure collect_channels [2022-11-18 20:36:30,085 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_channels [2022-11-18 20:36:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:36:30,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:36:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_context_destroy [2022-11-18 20:36:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_context_destroy [2022-11-18 20:36:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_unregister_rc [2022-11-18 20:36:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_unregister_rc [2022-11-18 20:36:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_status [2022-11-18 20:36:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_status [2022-11-18 20:36:30,086 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-11-18 20:36:30,086 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-11-18 20:36:30,089 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-11-18 20:36:30,090 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-11-18 20:36:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-11-18 20:36:30,090 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-11-18 20:36:30,090 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-18 20:36:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-18 20:36:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-11-18 20:36:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-11-18 20:36:30,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-11-18 20:36:30,091 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-11-18 20:36:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 20:36:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-11-18 20:36:30,092 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-11-18 20:36:30,092 INFO L130 BoogieDeclarations]: Found specification of procedure node_remove [2022-11-18 20:36:30,092 INFO L138 BoogieDeclarations]: Found implementation of procedure node_remove [2022-11-18 20:36:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 20:36:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_unregister [2022-11-18 20:36:30,093 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_unregister [2022-11-18 20:36:30,093 INFO L130 BoogieDeclarations]: Found specification of procedure add_pid_filter [2022-11-18 20:36:30,093 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pid_filter [2022-11-18 20:36:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:36:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure is_register_rc [2022-11-18 20:36:30,094 INFO L138 BoogieDeclarations]: Found implementation of procedure is_register_rc [2022-11-18 20:36:30,094 INFO L130 BoogieDeclarations]: Found specification of procedure dealloc_channel [2022-11-18 20:36:30,094 INFO L138 BoogieDeclarations]: Found implementation of procedure dealloc_channel [2022-11-18 20:36:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-18 20:36:30,095 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-18 20:36:30,095 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-18 20:36:30,095 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-18 20:36:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-11-18 20:36:30,096 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-11-18 20:36:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:36:30,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-11-18 20:36:30,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-11-18 20:36:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure debug_fcp [2022-11-18 20:36:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_fcp [2022-11-18 20:36:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-11-18 20:36:30,097 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-11-18 20:36:30,097 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-11-18 20:36:30,098 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-11-18 20:36:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-18 20:36:30,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-18 20:36:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_net_release [2022-11-18 20:36:30,098 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_net_release [2022-11-18 20:36:30,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:36:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:36:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:36:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-11-18 20:36:30,099 INFO L130 BoogieDeclarations]: Found specification of procedure set_opcr [2022-11-18 20:36:30,100 INFO L138 BoogieDeclarations]: Found implementation of procedure set_opcr [2022-11-18 20:36:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-11-18 20:36:30,100 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-11-18 20:36:30,100 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-18 20:36:30,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-18 20:36:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_buffer_destroy [2022-11-18 20:36:30,101 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_buffer_destroy [2022-11-18 20:36:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure node_probe [2022-11-18 20:36:30,101 INFO L138 BoogieDeclarations]: Found implementation of procedure node_probe [2022-11-18 20:36:30,101 INFO L130 BoogieDeclarations]: Found specification of procedure get_ca_object_pos [2022-11-18 20:36:30,102 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ca_object_pos [2022-11-18 20:36:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure node_update [2022-11-18 20:36:30,102 INFO L138 BoogieDeclarations]: Found implementation of procedure node_update [2022-11-18 20:36:30,102 INFO L130 BoogieDeclarations]: Found specification of procedure avc_register_remote_control [2022-11-18 20:36:30,102 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_register_remote_control [2022-11-18 20:36:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-11-18 20:36:30,103 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-11-18 20:36:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 20:36:30,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-18 20:36:30,103 INFO L130 BoogieDeclarations]: Found specification of procedure device_of [2022-11-18 20:36:30,104 INFO L138 BoogieDeclarations]: Found implementation of procedure device_of [2022-11-18 20:36:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-11-18 20:36:30,104 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-11-18 20:36:30,104 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_remove_address_handler [2022-11-18 20:36:30,104 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_remove_address_handler [2022-11-18 20:36:30,105 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:36:30,105 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:36:30,105 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:36:31,027 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:36:31,037 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:36:46,557 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:36:46,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:36:46,586 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:36:46,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:36:46 BoogieIcfgContainer [2022-11-18 20:36:46,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:36:46,594 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:36:46,594 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:36:46,598 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:36:46,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:36:25" (1/3) ... [2022-11-18 20:36:46,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aef0e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:36:46, skipping insertion in model container [2022-11-18 20:36:46,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:36:29" (2/3) ... [2022-11-18 20:36:46,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3aef0e50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:36:46, skipping insertion in model container [2022-11-18 20:36:46,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:36:46" (3/3) ... [2022-11-18 20:36:46,602 INFO L112 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-11-18 20:36:46,626 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:36:46,627 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:36:46,744 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:36:46,758 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=PETRI_NET, 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;@717bab60, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:36:46,758 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:36:46,769 INFO L276 IsEmpty]: Start isEmpty. Operand has 1341 states, 1031 states have (on average 1.393792434529583) internal successors, (1437), 1054 states have internal predecessors, (1437), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2022-11-18 20:36:46,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:36:46,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:46,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:46,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:46,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:46,796 INFO L85 PathProgramCache]: Analyzing trace with hash -1265805134, now seen corresponding path program 1 times [2022-11-18 20:36:46,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:46,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999361663] [2022-11-18 20:36:46,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:46,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:47,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:47,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:47,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999361663] [2022-11-18 20:36:47,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999361663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:47,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:47,478 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:47,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786685456] [2022-11-18 20:36:47,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:47,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:47,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:47,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:47,537 INFO L87 Difference]: Start difference. First operand has 1341 states, 1031 states have (on average 1.393792434529583) internal successors, (1437), 1054 states have internal predecessors, (1437), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:48,015 INFO L93 Difference]: Finished difference Result 3839 states and 5612 transitions. [2022-11-18 20:36:48,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:48,018 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:36:48,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:48,061 INFO L225 Difference]: With dead ends: 3839 [2022-11-18 20:36:48,061 INFO L226 Difference]: Without dead ends: 2491 [2022-11-18 20:36:48,081 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 [2022-11-18 20:36:48,085 INFO L413 NwaCegarLoop]: 2205 mSDtfsCounter, 1633 mSDsluCounter, 1899 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1633 SdHoareTripleChecker+Valid, 4104 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:48,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1633 Valid, 4104 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:36:48,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2491 states. [2022-11-18 20:36:48,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2491 to 2473. [2022-11-18 20:36:48,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2473 states, 1914 states have (on average 1.3908045977011494) internal successors, (2662), 1949 states have internal predecessors, (2662), 430 states have call successors, (430), 129 states have call predecessors, (430), 128 states have return successors, (421), 420 states have call predecessors, (421), 421 states have call successors, (421) [2022-11-18 20:36:48,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2473 states to 2473 states and 3513 transitions. [2022-11-18 20:36:48,375 INFO L78 Accepts]: Start accepts. Automaton has 2473 states and 3513 transitions. Word has length 17 [2022-11-18 20:36:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:48,376 INFO L495 AbstractCegarLoop]: Abstraction has 2473 states and 3513 transitions. [2022-11-18 20:36:48,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2473 states and 3513 transitions. [2022-11-18 20:36:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-11-18 20:36:48,385 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:48,385 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:48,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:36:48,385 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:48,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:48,386 INFO L85 PathProgramCache]: Analyzing trace with hash 1401395977, now seen corresponding path program 1 times [2022-11-18 20:36:48,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:48,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187863946] [2022-11-18 20:36:48,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:48,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:48,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:48,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:48,709 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187863946] [2022-11-18 20:36:48,709 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187863946] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:48,709 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:48,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:48,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986676358] [2022-11-18 20:36:48,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:48,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:48,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:48,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:48,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:48,717 INFO L87 Difference]: Start difference. First operand 2473 states and 3513 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:48,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:48,873 INFO L93 Difference]: Finished difference Result 2638 states and 3735 transitions. [2022-11-18 20:36:48,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:48,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-11-18 20:36:48,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:48,890 INFO L225 Difference]: With dead ends: 2638 [2022-11-18 20:36:48,891 INFO L226 Difference]: Without dead ends: 2634 [2022-11-18 20:36:48,895 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 [2022-11-18 20:36:48,898 INFO L413 NwaCegarLoop]: 1906 mSDtfsCounter, 1282 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:48,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 2616 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:48,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2634 states. [2022-11-18 20:36:49,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2634 to 2632. [2022-11-18 20:36:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2632 states, 2058 states have (on average 1.3950437317784257) internal successors, (2871), 2093 states have internal predecessors, (2871), 432 states have call successors, (432), 142 states have call predecessors, (432), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2022-11-18 20:36:49,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2632 states to 2632 states and 3728 transitions. [2022-11-18 20:36:49,052 INFO L78 Accepts]: Start accepts. Automaton has 2632 states and 3728 transitions. Word has length 19 [2022-11-18 20:36:49,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:49,053 INFO L495 AbstractCegarLoop]: Abstraction has 2632 states and 3728 transitions. [2022-11-18 20:36:49,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:49,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2632 states and 3728 transitions. [2022-11-18 20:36:49,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-11-18 20:36:49,061 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:49,061 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:49,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:36:49,062 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:49,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:49,067 INFO L85 PathProgramCache]: Analyzing trace with hash 493119116, now seen corresponding path program 1 times [2022-11-18 20:36:49,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:49,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419906664] [2022-11-18 20:36:49,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:49,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:49,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:49,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:49,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:49,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419906664] [2022-11-18 20:36:49,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419906664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:49,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:49,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:49,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799068552] [2022-11-18 20:36:49,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:49,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:49,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:49,306 INFO L87 Difference]: Start difference. First operand 2632 states and 3728 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:49,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:49,548 INFO L93 Difference]: Finished difference Result 2634 states and 3729 transitions. [2022-11-18 20:36:49,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:49,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-11-18 20:36:49,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:49,564 INFO L225 Difference]: With dead ends: 2634 [2022-11-18 20:36:49,564 INFO L226 Difference]: Without dead ends: 2631 [2022-11-18 20:36:49,569 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 [2022-11-18 20:36:49,575 INFO L413 NwaCegarLoop]: 1895 mSDtfsCounter, 1879 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1879 SdHoareTripleChecker+Valid, 1895 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:49,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1879 Valid, 1895 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:49,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2631 states. [2022-11-18 20:36:49,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2631 to 2631. [2022-11-18 20:36:49,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2631 states, 2058 states have (on average 1.3945578231292517) internal successors, (2870), 2092 states have internal predecessors, (2870), 431 states have call successors, (431), 142 states have call predecessors, (431), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2022-11-18 20:36:49,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3726 transitions. [2022-11-18 20:36:49,762 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3726 transitions. Word has length 20 [2022-11-18 20:36:49,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:49,763 INFO L495 AbstractCegarLoop]: Abstraction has 2631 states and 3726 transitions. [2022-11-18 20:36:49,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:49,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3726 transitions. [2022-11-18 20:36:49,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-18 20:36:49,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:49,766 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:49,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:36:49,766 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:49,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:49,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1893654932, now seen corresponding path program 1 times [2022-11-18 20:36:49,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:49,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933254519] [2022-11-18 20:36:49,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:49,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:49,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:50,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:50,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:50,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933254519] [2022-11-18 20:36:50,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933254519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:50,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:50,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:50,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819799585] [2022-11-18 20:36:50,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:50,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:50,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:50,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:50,014 INFO L87 Difference]: Start difference. First operand 2631 states and 3726 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:50,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:50,339 INFO L93 Difference]: Finished difference Result 7863 states and 11215 transitions. [2022-11-18 20:36:50,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:50,340 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-18 20:36:50,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:50,381 INFO L225 Difference]: With dead ends: 7863 [2022-11-18 20:36:50,382 INFO L226 Difference]: Without dead ends: 5235 [2022-11-18 20:36:50,394 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 [2022-11-18 20:36:50,402 INFO L413 NwaCegarLoop]: 2158 mSDtfsCounter, 1881 mSDsluCounter, 1879 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 4037 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:50,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 4037 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:50,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5235 states. [2022-11-18 20:36:50,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5235 to 5223. [2022-11-18 20:36:50,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5223 states, 4092 states have (on average 1.3949169110459434) internal successors, (5708), 4159 states have internal predecessors, (5708), 850 states have call successors, (850), 282 states have call predecessors, (850), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2022-11-18 20:36:50,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5223 states to 5223 states and 7440 transitions. [2022-11-18 20:36:50,760 INFO L78 Accepts]: Start accepts. Automaton has 5223 states and 7440 transitions. Word has length 21 [2022-11-18 20:36:50,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:50,761 INFO L495 AbstractCegarLoop]: Abstraction has 5223 states and 7440 transitions. [2022-11-18 20:36:50,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:50,761 INFO L276 IsEmpty]: Start isEmpty. Operand 5223 states and 7440 transitions. [2022-11-18 20:36:50,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:36:50,762 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:50,762 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:50,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:36:50,763 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:50,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:50,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1425765775, now seen corresponding path program 1 times [2022-11-18 20:36:50,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:50,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080864336] [2022-11-18 20:36:50,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:50,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:51,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:51,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:51,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080864336] [2022-11-18 20:36:51,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080864336] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:51,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:51,027 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:51,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640023411] [2022-11-18 20:36:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:51,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:51,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:51,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:51,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:51,028 INFO L87 Difference]: Start difference. First operand 5223 states and 7440 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:51,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:51,263 INFO L93 Difference]: Finished difference Result 5225 states and 7441 transitions. [2022-11-18 20:36:51,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:51,264 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:36:51,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:51,294 INFO L225 Difference]: With dead ends: 5225 [2022-11-18 20:36:51,294 INFO L226 Difference]: Without dead ends: 5222 [2022-11-18 20:36:51,298 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 [2022-11-18 20:36:51,299 INFO L413 NwaCegarLoop]: 1893 mSDtfsCounter, 1875 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1875 SdHoareTripleChecker+Valid, 1893 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:51,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1875 Valid, 1893 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:51,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5222 states. [2022-11-18 20:36:51,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5222 to 5222. [2022-11-18 20:36:51,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5222 states, 4092 states have (on average 1.394672531769306) internal successors, (5707), 4158 states have internal predecessors, (5707), 849 states have call successors, (849), 282 states have call predecessors, (849), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2022-11-18 20:36:51,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5222 states to 5222 states and 7438 transitions. [2022-11-18 20:36:51,839 INFO L78 Accepts]: Start accepts. Automaton has 5222 states and 7438 transitions. Word has length 22 [2022-11-18 20:36:51,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:51,840 INFO L495 AbstractCegarLoop]: Abstraction has 5222 states and 7438 transitions. [2022-11-18 20:36:51,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:51,841 INFO L276 IsEmpty]: Start isEmpty. Operand 5222 states and 7438 transitions. [2022-11-18 20:36:51,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-11-18 20:36:51,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:51,842 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:51,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:36:51,843 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:51,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:51,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1248597455, now seen corresponding path program 1 times [2022-11-18 20:36:51,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:51,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767640636] [2022-11-18 20:36:51,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:51,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:51,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:52,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:36:52,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:52,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767640636] [2022-11-18 20:36:52,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767640636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:52,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:52,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:36:52,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676883862] [2022-11-18 20:36:52,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:52,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:36:52,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:36:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:36:52,046 INFO L87 Difference]: Start difference. First operand 5222 states and 7438 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:52,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:36:52,283 INFO L93 Difference]: Finished difference Result 5224 states and 7439 transitions. [2022-11-18 20:36:52,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:36:52,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-11-18 20:36:52,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:36:52,320 INFO L225 Difference]: With dead ends: 5224 [2022-11-18 20:36:52,321 INFO L226 Difference]: Without dead ends: 5210 [2022-11-18 20:36:52,325 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 [2022-11-18 20:36:52,327 INFO L413 NwaCegarLoop]: 1892 mSDtfsCounter, 1872 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1872 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:36:52,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1872 Valid, 1892 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:36:52,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5210 states. [2022-11-18 20:36:52,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5210 to 5210. [2022-11-18 20:36:52,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5210 states, 4083 states have (on average 1.3943179035023268) internal successors, (5693), 4147 states have internal predecessors, (5693), 846 states have call successors, (846), 282 states have call predecessors, (846), 280 states have return successors, (880), 836 states have call predecessors, (880), 840 states have call successors, (880) [2022-11-18 20:36:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5210 states to 5210 states and 7419 transitions. [2022-11-18 20:36:52,676 INFO L78 Accepts]: Start accepts. Automaton has 5210 states and 7419 transitions. Word has length 23 [2022-11-18 20:36:52,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:36:52,677 INFO L495 AbstractCegarLoop]: Abstraction has 5210 states and 7419 transitions. [2022-11-18 20:36:52,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:36:52,677 INFO L276 IsEmpty]: Start isEmpty. Operand 5210 states and 7419 transitions. [2022-11-18 20:36:52,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-11-18 20:36:52,680 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:36:52,680 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:36:52,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:36:52,681 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:36:52,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:36:52,681 INFO L85 PathProgramCache]: Analyzing trace with hash -495165310, now seen corresponding path program 1 times [2022-11-18 20:36:52,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:36:52,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935803404] [2022-11-18 20:36:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:36:52,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:36:52,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-18 20:36:53,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:53,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 20:36:53,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:53,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 20:36:53,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:53,237 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:36:53,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:36:53,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935803404] [2022-11-18 20:36:53,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935803404] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:36:53,238 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:36:53,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:36:53,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192041315] [2022-11-18 20:36:53,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:36:53,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:36:53,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:53,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:36:53,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:36:53,240 INFO L87 Difference]: Start difference. First operand 5210 states and 7419 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:36:57,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:01,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:04,702 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:08,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:14,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:14,877 INFO L93 Difference]: Finished difference Result 10904 states and 15648 transitions. [2022-11-18 20:37:14,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:37:14,877 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2022-11-18 20:37:14,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:14,927 INFO L225 Difference]: With dead ends: 10904 [2022-11-18 20:37:14,927 INFO L226 Difference]: Without dead ends: 5697 [2022-11-18 20:37:14,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:37:14,956 INFO L413 NwaCegarLoop]: 1364 mSDtfsCounter, 2661 mSDsluCounter, 2758 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 922 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2808 SdHoareTripleChecker+Valid, 4122 SdHoareTripleChecker+Invalid, 2976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 922 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:14,956 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2808 Valid, 4122 Invalid, 2976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [922 Valid, 2050 Invalid, 4 Unknown, 0 Unchecked, 20.7s Time] [2022-11-18 20:37:14,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5697 states. [2022-11-18 20:37:15,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5697 to 5220. [2022-11-18 20:37:15,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5220 states, 4091 states have (on average 1.3930579320459546) internal successors, (5699), 4159 states have internal predecessors, (5699), 840 states have call successors, (840), 282 states have call predecessors, (840), 288 states have return successors, (886), 830 states have call predecessors, (886), 834 states have call successors, (886) [2022-11-18 20:37:15,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 7425 transitions. [2022-11-18 20:37:15,482 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 7425 transitions. Word has length 48 [2022-11-18 20:37:15,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:15,484 INFO L495 AbstractCegarLoop]: Abstraction has 5220 states and 7425 transitions. [2022-11-18 20:37:15,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-18 20:37:15,484 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 7425 transitions. [2022-11-18 20:37:15,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 20:37:15,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:15,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:15,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:37:15,492 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:15,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:15,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1675239178, now seen corresponding path program 1 times [2022-11-18 20:37:15,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:15,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612351722] [2022-11-18 20:37:15,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:15,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:16,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:37:16,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:16,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:37:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:16,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:37:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:16,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:37:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:16,371 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:37:16,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:16,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612351722] [2022-11-18 20:37:16,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612351722] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:16,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:16,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:37:16,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040109803] [2022-11-18 20:37:16,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:16,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:37:16,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:16,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:37:16,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:37:16,374 INFO L87 Difference]: Start difference. First operand 5220 states and 7425 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:37:22,028 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:24,037 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:27,951 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:30,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:40,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:40,673 INFO L93 Difference]: Finished difference Result 11460 states and 16632 transitions. [2022-11-18 20:37:40,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:37:40,674 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-11-18 20:37:40,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:40,711 INFO L225 Difference]: With dead ends: 11460 [2022-11-18 20:37:40,712 INFO L226 Difference]: Without dead ends: 6243 [2022-11-18 20:37:40,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:37:40,736 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 2909 mSDsluCounter, 4671 mSDsCounter, 0 mSdLazyCounter, 3356 mSolverCounterSat, 1058 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3014 SdHoareTripleChecker+Valid, 5995 SdHoareTripleChecker+Invalid, 4417 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 3356 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:40,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3014 Valid, 5995 Invalid, 4417 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1058 Valid, 3356 Invalid, 3 Unknown, 0 Unchecked, 23.4s Time] [2022-11-18 20:37:40,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6243 states. [2022-11-18 20:37:41,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6243 to 4910. [2022-11-18 20:37:41,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4910 states, 3865 states have (on average 1.394307891332471) internal successors, (5389), 3933 states have internal predecessors, (5389), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2022-11-18 20:37:41,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4910 states to 4910 states and 6951 transitions. [2022-11-18 20:37:41,180 INFO L78 Accepts]: Start accepts. Automaton has 4910 states and 6951 transitions. Word has length 61 [2022-11-18 20:37:41,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:41,181 INFO L495 AbstractCegarLoop]: Abstraction has 4910 states and 6951 transitions. [2022-11-18 20:37:41,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:37:41,181 INFO L276 IsEmpty]: Start isEmpty. Operand 4910 states and 6951 transitions. [2022-11-18 20:37:41,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:37:41,186 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:41,186 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:41,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:37:41,187 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:41,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:41,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1174470213, now seen corresponding path program 1 times [2022-11-18 20:37:41,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:41,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964760111] [2022-11-18 20:37:41,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:41,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:41,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:37:41,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:41,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:37:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:41,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:37:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:41,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:37:41,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:41,573 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:37:41,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:41,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964760111] [2022-11-18 20:37:41,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964760111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:41,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:41,574 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:37:41,574 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445011672] [2022-11-18 20:37:41,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:41,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:37:41,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:41,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:37:41,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:37:41,576 INFO L87 Difference]: Start difference. First operand 4910 states and 6951 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:37:45,717 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:50,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:37:52,100 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 [] [2022-11-18 20:37:58,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:37:58,154 INFO L93 Difference]: Finished difference Result 10704 states and 15572 transitions. [2022-11-18 20:37:58,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:37:58,155 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2022-11-18 20:37:58,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:37:58,188 INFO L225 Difference]: With dead ends: 10704 [2022-11-18 20:37:58,189 INFO L226 Difference]: Without dead ends: 5797 [2022-11-18 20:37:58,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:37:58,214 INFO L413 NwaCegarLoop]: 1123 mSDtfsCounter, 1600 mSDsluCounter, 2360 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 892 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 2893 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 892 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:37:58,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 3483 Invalid, 2893 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [892 Valid, 1999 Invalid, 2 Unknown, 0 Unchecked, 16.0s Time] [2022-11-18 20:37:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5797 states. [2022-11-18 20:37:58,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5797 to 4914. [2022-11-18 20:37:58,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4914 states, 3869 states have (on average 1.3939002326182477) internal successors, (5393), 3937 states have internal predecessors, (5393), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2022-11-18 20:37:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4914 states to 4914 states and 6955 transitions. [2022-11-18 20:37:58,581 INFO L78 Accepts]: Start accepts. Automaton has 4914 states and 6955 transitions. Word has length 65 [2022-11-18 20:37:58,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:37:58,584 INFO L495 AbstractCegarLoop]: Abstraction has 4914 states and 6955 transitions. [2022-11-18 20:37:58,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:37:58,584 INFO L276 IsEmpty]: Start isEmpty. Operand 4914 states and 6955 transitions. [2022-11-18 20:37:58,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:37:58,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:37:58,589 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:58,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:37:58,590 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:37:58,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:58,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1098031822, now seen corresponding path program 1 times [2022-11-18 20:37:58,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:58,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59383025] [2022-11-18 20:37:58,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:58,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:58,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-18 20:37:58,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:58,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:37:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:58,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:37:58,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:58,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:37:58,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:58,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:37:58,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:58,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 20:37:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:58,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:58,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59383025] [2022-11-18 20:37:58,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59383025] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:37:58,930 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:37:58,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:37:58,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803781940] [2022-11-18 20:37:58,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:37:58,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:37:58,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:37:58,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:37:58,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:37:58,932 INFO L87 Difference]: Start difference. First operand 4914 states and 6955 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:38:03,365 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 [] [2022-11-18 20:38:07,112 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 [] [2022-11-18 20:38:09,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:09,964 INFO L93 Difference]: Finished difference Result 11492 states and 16357 transitions. [2022-11-18 20:38:09,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:38:09,965 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2022-11-18 20:38:09,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:09,994 INFO L225 Difference]: With dead ends: 11492 [2022-11-18 20:38:09,994 INFO L226 Difference]: Without dead ends: 6581 [2022-11-18 20:38:10,012 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:10,013 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 2412 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 2130 mSolverCounterSat, 653 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2547 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 2785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 653 IncrementalHoareTripleChecker+Valid, 2130 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:10,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2547 Valid, 2793 Invalid, 2785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [653 Valid, 2130 Invalid, 2 Unknown, 0 Unchecked, 10.4s Time] [2022-11-18 20:38:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6581 states. [2022-11-18 20:38:10,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6581 to 6230. [2022-11-18 20:38:10,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6230 states, 4957 states have (on average 1.4071010691950776) internal successors, (6975), 5041 states have internal predecessors, (6975), 902 states have call successors, (902), 356 states have call predecessors, (902), 370 states have return successors, (972), 904 states have call predecessors, (972), 896 states have call successors, (972) [2022-11-18 20:38:10,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6230 states to 6230 states and 8849 transitions. [2022-11-18 20:38:10,542 INFO L78 Accepts]: Start accepts. Automaton has 6230 states and 8849 transitions. Word has length 76 [2022-11-18 20:38:10,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:10,542 INFO L495 AbstractCegarLoop]: Abstraction has 6230 states and 8849 transitions. [2022-11-18 20:38:10,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:38:10,542 INFO L276 IsEmpty]: Start isEmpty. Operand 6230 states and 8849 transitions. [2022-11-18 20:38:10,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-18 20:38:10,549 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:10,549 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:38:10,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:38:10,549 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:10,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:10,550 INFO L85 PathProgramCache]: Analyzing trace with hash 447564312, now seen corresponding path program 1 times [2022-11-18 20:38:10,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:10,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031740379] [2022-11-18 20:38:10,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:10,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:10,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:38:10,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:10,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:38:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:38:10,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:38:10,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:38:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:10,885 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:10,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:10,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031740379] [2022-11-18 20:38:10,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031740379] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:10,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:10,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:38:10,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084900358] [2022-11-18 20:38:10,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:10,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:38:10,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:10,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:38:10,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:38:10,889 INFO L87 Difference]: Start difference. First operand 6230 states and 8849 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:38:16,225 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 [] [2022-11-18 20:38:19,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:26,305 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:28,517 INFO L93 Difference]: Finished difference Result 18062 states and 25783 transitions. [2022-11-18 20:38:28,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:38:28,518 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 89 [2022-11-18 20:38:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:28,577 INFO L225 Difference]: With dead ends: 18062 [2022-11-18 20:38:28,578 INFO L226 Difference]: Without dead ends: 11835 [2022-11-18 20:38:28,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:38:28,600 INFO L413 NwaCegarLoop]: 1724 mSDtfsCounter, 3691 mSDsluCounter, 2230 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 1366 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3874 SdHoareTripleChecker+Valid, 3954 SdHoareTripleChecker+Invalid, 4142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1366 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:28,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3874 Valid, 3954 Invalid, 4142 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1366 Valid, 2773 Invalid, 3 Unknown, 0 Unchecked, 16.3s Time] [2022-11-18 20:38:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11835 states. [2022-11-18 20:38:29,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11835 to 11196. [2022-11-18 20:38:29,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11196 states, 8847 states have (on average 1.398327116536679) internal successors, (12371), 8995 states have internal predecessors, (12371), 1684 states have call successors, (1684), 634 states have call predecessors, (1684), 664 states have return successors, (1844), 1692 states have call predecessors, (1844), 1678 states have call successors, (1844) [2022-11-18 20:38:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11196 states to 11196 states and 15899 transitions. [2022-11-18 20:38:29,645 INFO L78 Accepts]: Start accepts. Automaton has 11196 states and 15899 transitions. Word has length 89 [2022-11-18 20:38:29,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:29,645 INFO L495 AbstractCegarLoop]: Abstraction has 11196 states and 15899 transitions. [2022-11-18 20:38:29,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 20:38:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 11196 states and 15899 transitions. [2022-11-18 20:38:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 20:38:29,652 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:29,652 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:38:29,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:38:29,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:29,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash -108467863, now seen corresponding path program 1 times [2022-11-18 20:38:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:29,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333300978] [2022-11-18 20:38:29,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:29,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:29,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:30,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:38:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:30,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:38:30,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:30,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 20:38:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:30,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:38:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:38:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:38:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:30,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:30,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:30,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:38:30,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:30,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333300978] [2022-11-18 20:38:30,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333300978] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:30,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:30,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:38:30,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304582382] [2022-11-18 20:38:30,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:30,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:38:30,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:30,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:38:30,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:38:30,293 INFO L87 Difference]: Start difference. First operand 11196 states and 15899 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:38:35,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:37,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:41,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:45,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:38:53,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:38:53,667 INFO L93 Difference]: Finished difference Result 12953 states and 18767 transitions. [2022-11-18 20:38:53,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:38:53,668 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-11-18 20:38:53,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:38:53,741 INFO L225 Difference]: With dead ends: 12953 [2022-11-18 20:38:53,742 INFO L226 Difference]: Without dead ends: 12950 [2022-11-18 20:38:53,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:38:53,751 INFO L413 NwaCegarLoop]: 1097 mSDtfsCounter, 1746 mSDsluCounter, 2459 mSDsCounter, 0 mSdLazyCounter, 2573 mSolverCounterSat, 663 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 3556 SdHoareTripleChecker+Invalid, 3239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 663 IncrementalHoareTripleChecker+Valid, 2573 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:38:53,752 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 3556 Invalid, 3239 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [663 Valid, 2573 Invalid, 3 Unknown, 0 Unchecked, 22.1s Time] [2022-11-18 20:38:53,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12950 states. [2022-11-18 20:38:54,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12950 to 11195. [2022-11-18 20:38:54,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11195 states, 8847 states have (on average 1.397196789872273) internal successors, (12361), 8994 states have internal predecessors, (12361), 1683 states have call successors, (1683), 634 states have call predecessors, (1683), 664 states have return successors, (1844), 1692 states have call predecessors, (1844), 1678 states have call successors, (1844) [2022-11-18 20:38:54,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11195 states to 11195 states and 15888 transitions. [2022-11-18 20:38:54,697 INFO L78 Accepts]: Start accepts. Automaton has 11195 states and 15888 transitions. Word has length 87 [2022-11-18 20:38:54,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:38:54,698 INFO L495 AbstractCegarLoop]: Abstraction has 11195 states and 15888 transitions. [2022-11-18 20:38:54,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:38:54,698 INFO L276 IsEmpty]: Start isEmpty. Operand 11195 states and 15888 transitions. [2022-11-18 20:38:54,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 20:38:54,707 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:38:54,708 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:38:54,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:38:54,708 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:38:54,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:38:54,709 INFO L85 PathProgramCache]: Analyzing trace with hash 936686127, now seen corresponding path program 1 times [2022-11-18 20:38:54,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:38:54,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955851015] [2022-11-18 20:38:54,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:38:54,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:38:54,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:38:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:55,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:38:55,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:38:55,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:38:55,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:38:55,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:38:55,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:38:55,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:38:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:38:55,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:38:55,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955851015] [2022-11-18 20:38:55,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955851015] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:38:55,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:38:55,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:38:55,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713442075] [2022-11-18 20:38:55,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:38:55,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:38:55,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:55,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:38:55,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:38:55,468 INFO L87 Difference]: Start difference. First operand 11195 states and 15888 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:39:01,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:05,144 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:09,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:11,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:13,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.77s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:18,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:20,135 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:28,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:28,256 INFO L93 Difference]: Finished difference Result 23497 states and 33649 transitions. [2022-11-18 20:39:28,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:39:28,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2022-11-18 20:39:28,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:28,328 INFO L225 Difference]: With dead ends: 23497 [2022-11-18 20:39:28,329 INFO L226 Difference]: Without dead ends: 12305 [2022-11-18 20:39:28,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:39:28,373 INFO L413 NwaCegarLoop]: 984 mSDtfsCounter, 2222 mSDsluCounter, 3358 mSDsCounter, 0 mSdLazyCounter, 4095 mSolverCounterSat, 831 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2361 SdHoareTripleChecker+Valid, 4342 SdHoareTripleChecker+Invalid, 4932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 831 IncrementalHoareTripleChecker+Valid, 4095 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:28,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2361 Valid, 4342 Invalid, 4932 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [831 Valid, 4095 Invalid, 6 Unknown, 0 Unchecked, 31.6s Time] [2022-11-18 20:39:28,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12305 states. [2022-11-18 20:39:29,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12305 to 11291. [2022-11-18 20:39:29,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11291 states, 8927 states have (on average 1.3963257533325866) internal successors, (12465), 9074 states have internal predecessors, (12465), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1868), 1708 states have call predecessors, (1868), 1694 states have call successors, (1868) [2022-11-18 20:39:29,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11291 states to 11291 states and 16032 transitions. [2022-11-18 20:39:29,405 INFO L78 Accepts]: Start accepts. Automaton has 11291 states and 16032 transitions. Word has length 120 [2022-11-18 20:39:29,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:29,406 INFO L495 AbstractCegarLoop]: Abstraction has 11291 states and 16032 transitions. [2022-11-18 20:39:29,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 20:39:29,406 INFO L276 IsEmpty]: Start isEmpty. Operand 11291 states and 16032 transitions. [2022-11-18 20:39:29,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-18 20:39:29,417 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:29,418 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:39:29,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:39:29,418 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:29,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:29,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1307297171, now seen corresponding path program 1 times [2022-11-18 20:39:29,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:29,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331020099] [2022-11-18 20:39:29,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:29,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:29,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:39:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:29,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:29,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:29,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:29,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:29,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:29,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:39:29,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:29,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:29,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:29,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:39:29,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:30,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:39:30,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:30,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:39:30,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:30,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:39:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:30,091 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:39:30,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:30,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331020099] [2022-11-18 20:39:30,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331020099] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:30,092 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:30,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:30,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315222344] [2022-11-18 20:39:30,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:30,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:30,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:30,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:30,094 INFO L87 Difference]: Start difference. First operand 11291 states and 16032 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 20:39:34,516 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 [] [2022-11-18 20:39:37,357 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:40,090 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:45,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:39:45,861 INFO L93 Difference]: Finished difference Result 23459 states and 33551 transitions. [2022-11-18 20:39:45,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:39:45,862 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 120 [2022-11-18 20:39:45,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:39:45,940 INFO L225 Difference]: With dead ends: 23459 [2022-11-18 20:39:45,940 INFO L226 Difference]: Without dead ends: 12171 [2022-11-18 20:39:45,986 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:39:45,987 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 1804 mSDsluCounter, 1897 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 583 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1942 SdHoareTripleChecker+Valid, 2879 SdHoareTripleChecker+Invalid, 2706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 583 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:39:45,987 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1942 Valid, 2879 Invalid, 2706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [583 Valid, 2120 Invalid, 3 Unknown, 0 Unchecked, 14.6s Time] [2022-11-18 20:39:46,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12171 states. [2022-11-18 20:39:46,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12171 to 11299. [2022-11-18 20:39:46,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11299 states, 8935 states have (on average 1.395970900951315) internal successors, (12473), 9082 states have internal predecessors, (12473), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1868), 1708 states have call predecessors, (1868), 1694 states have call successors, (1868) [2022-11-18 20:39:46,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11299 states to 11299 states and 16040 transitions. [2022-11-18 20:39:46,950 INFO L78 Accepts]: Start accepts. Automaton has 11299 states and 16040 transitions. Word has length 120 [2022-11-18 20:39:46,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:39:46,950 INFO L495 AbstractCegarLoop]: Abstraction has 11299 states and 16040 transitions. [2022-11-18 20:39:46,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 20:39:46,951 INFO L276 IsEmpty]: Start isEmpty. Operand 11299 states and 16040 transitions. [2022-11-18 20:39:46,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 20:39:46,963 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:39:46,963 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:39:46,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:39:46,964 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:39:46,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:39:46,964 INFO L85 PathProgramCache]: Analyzing trace with hash 215381440, now seen corresponding path program 1 times [2022-11-18 20:39:46,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:39:46,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949880442] [2022-11-18 20:39:46,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:39:46,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:39:47,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:39:47,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:47,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:47,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:39:47,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:39:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:39:47,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:39:47,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:39:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:39:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:39:47,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:39:47,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949880442] [2022-11-18 20:39:47,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949880442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:39:47,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:39:47,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:39:47,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487045299] [2022-11-18 20:39:47,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:39:47,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:39:47,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:39:47,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:39:47,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:39:47,461 INFO L87 Difference]: Start difference. First operand 11299 states and 16040 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 20:39:52,159 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:55,205 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:57,962 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 [] [2022-11-18 20:40:04,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:04,634 INFO L93 Difference]: Finished difference Result 23735 states and 34007 transitions. [2022-11-18 20:40:04,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:40:04,635 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 122 [2022-11-18 20:40:04,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:04,704 INFO L225 Difference]: With dead ends: 23735 [2022-11-18 20:40:04,704 INFO L226 Difference]: Without dead ends: 12439 [2022-11-18 20:40:04,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:04,751 INFO L413 NwaCegarLoop]: 1029 mSDtfsCounter, 1555 mSDsluCounter, 2320 mSDsCounter, 0 mSdLazyCounter, 2712 mSolverCounterSat, 385 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1707 SdHoareTripleChecker+Valid, 3349 SdHoareTripleChecker+Invalid, 3100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 385 IncrementalHoareTripleChecker+Valid, 2712 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:04,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1707 Valid, 3349 Invalid, 3100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [385 Valid, 2712 Invalid, 3 Unknown, 0 Unchecked, 15.9s Time] [2022-11-18 20:40:04,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12439 states. [2022-11-18 20:40:05,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12439 to 11352. [2022-11-18 20:40:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11352 states, 8988 states have (on average 1.392745883400089) internal successors, (12518), 9135 states have internal predecessors, (12518), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1868), 1708 states have call predecessors, (1868), 1694 states have call successors, (1868) [2022-11-18 20:40:05,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11352 states to 11352 states and 16085 transitions. [2022-11-18 20:40:05,603 INFO L78 Accepts]: Start accepts. Automaton has 11352 states and 16085 transitions. Word has length 122 [2022-11-18 20:40:05,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:05,604 INFO L495 AbstractCegarLoop]: Abstraction has 11352 states and 16085 transitions. [2022-11-18 20:40:05,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-18 20:40:05,604 INFO L276 IsEmpty]: Start isEmpty. Operand 11352 states and 16085 transitions. [2022-11-18 20:40:05,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-18 20:40:05,618 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:05,618 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:40:05,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:40:05,619 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1951665736, now seen corresponding path program 1 times [2022-11-18 20:40:05,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:05,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313570991] [2022-11-18 20:40:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:05,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:05,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:40:06,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:06,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:40:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:06,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:40:06,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-11-18 20:40:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:40:06,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:06,203 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-18 20:40:06,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:06,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313570991] [2022-11-18 20:40:06,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313570991] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:06,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:06,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:40:06,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835917291] [2022-11-18 20:40:06,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:06,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:40:06,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:06,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:40:06,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:40:06,208 INFO L87 Difference]: Start difference. First operand 11352 states and 16085 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:40:11,389 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 [] [2022-11-18 20:40:14,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:16,198 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:19,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:26,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:40:26,419 INFO L93 Difference]: Finished difference Result 23832 states and 33961 transitions. [2022-11-18 20:40:26,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:40:26,420 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2022-11-18 20:40:26,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:40:26,478 INFO L225 Difference]: With dead ends: 23832 [2022-11-18 20:40:26,478 INFO L226 Difference]: Without dead ends: 12471 [2022-11-18 20:40:26,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:40:26,521 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 1758 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 2929 mSolverCounterSat, 594 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1898 SdHoareTripleChecker+Valid, 3823 SdHoareTripleChecker+Invalid, 3526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 2929 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:40:26,522 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1898 Valid, 3823 Invalid, 3526 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [594 Valid, 2929 Invalid, 3 Unknown, 0 Unchecked, 19.0s Time] [2022-11-18 20:40:26,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12471 states. [2022-11-18 20:40:27,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12471 to 11354. [2022-11-18 20:40:27,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11354 states, 8990 states have (on average 1.3919911012235817) internal successors, (12514), 9137 states have internal predecessors, (12514), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1868), 1708 states have call predecessors, (1868), 1694 states have call successors, (1868) [2022-11-18 20:40:27,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11354 states to 11354 states and 16081 transitions. [2022-11-18 20:40:27,712 INFO L78 Accepts]: Start accepts. Automaton has 11354 states and 16081 transitions. Word has length 122 [2022-11-18 20:40:27,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:40:27,712 INFO L495 AbstractCegarLoop]: Abstraction has 11354 states and 16081 transitions. [2022-11-18 20:40:27,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:40:27,712 INFO L276 IsEmpty]: Start isEmpty. Operand 11354 states and 16081 transitions. [2022-11-18 20:40:27,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-11-18 20:40:27,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:40:27,723 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-18 20:40:27,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:40:27,724 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:40:27,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:40:27,725 INFO L85 PathProgramCache]: Analyzing trace with hash 1621962215, now seen corresponding path program 1 times [2022-11-18 20:40:27,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:40:27,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642621602] [2022-11-18 20:40:27,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:40:27,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:40:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:40:28,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:28,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:28,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:40:28,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:40:28,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:40:28,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-18 20:40:28,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-11-18 20:40:28,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:40:28,440 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-18 20:40:28,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:40:28,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642621602] [2022-11-18 20:40:28,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642621602] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:40:28,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:40:28,442 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:40:28,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966715898] [2022-11-18 20:40:28,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:40:28,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:40:28,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:40:28,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:40:28,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:40:28,444 INFO L87 Difference]: Start difference. First operand 11354 states and 16081 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:40:34,256 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 [] [2022-11-18 20:40:40,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:43,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:40:57,833 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 [] [2022-11-18 20:41:01,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:01,014 INFO L93 Difference]: Finished difference Result 29024 states and 41339 transitions. [2022-11-18 20:41:01,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:41:01,015 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 125 [2022-11-18 20:41:01,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:01,094 INFO L225 Difference]: With dead ends: 29024 [2022-11-18 20:41:01,095 INFO L226 Difference]: Without dead ends: 17673 [2022-11-18 20:41:01,127 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:41:01,128 INFO L413 NwaCegarLoop]: 1898 mSDtfsCounter, 3290 mSDsluCounter, 6353 mSDsCounter, 0 mSdLazyCounter, 6551 mSolverCounterSat, 1235 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3494 SdHoareTripleChecker+Valid, 8251 SdHoareTripleChecker+Invalid, 7789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1235 IncrementalHoareTripleChecker+Valid, 6551 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 30.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:01,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3494 Valid, 8251 Invalid, 7789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1235 Valid, 6551 Invalid, 3 Unknown, 0 Unchecked, 30.5s Time] [2022-11-18 20:41:01,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17673 states. [2022-11-18 20:41:02,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17673 to 11370. [2022-11-18 20:41:02,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11370 states, 9002 states have (on average 1.3914685625416574) internal successors, (12526), 9149 states have internal predecessors, (12526), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1876), 1712 states have call predecessors, (1876), 1694 states have call successors, (1876) [2022-11-18 20:41:02,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11370 states to 11370 states and 16101 transitions. [2022-11-18 20:41:02,339 INFO L78 Accepts]: Start accepts. Automaton has 11370 states and 16101 transitions. Word has length 125 [2022-11-18 20:41:02,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:02,339 INFO L495 AbstractCegarLoop]: Abstraction has 11370 states and 16101 transitions. [2022-11-18 20:41:02,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-11-18 20:41:02,340 INFO L276 IsEmpty]: Start isEmpty. Operand 11370 states and 16101 transitions. [2022-11-18 20:41:02,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-18 20:41:02,353 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:02,353 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:02,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:41:02,354 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:02,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:02,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1511026454, now seen corresponding path program 1 times [2022-11-18 20:41:02,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:02,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199118577] [2022-11-18 20:41:02,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:02,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:02,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:41:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:02,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:02,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:02,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:41:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:41:02,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:41:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:02,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:02,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:02,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:03,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:41:03,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:03,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:41:03,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:03,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:03,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:03,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-18 20:41:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:03,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 20:41:03,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:03,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-11-18 20:41:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:41:03,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:03,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199118577] [2022-11-18 20:41:03,106 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199118577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:03,106 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:03,106 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:41:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849934852] [2022-11-18 20:41:03,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:03,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:41:03,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:03,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:41:03,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:41:03,111 INFO L87 Difference]: Start difference. First operand 11370 states and 16101 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:41:07,553 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 [] [2022-11-18 20:41:10,032 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:41:12,656 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:41:18,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:41:18,573 INFO L93 Difference]: Finished difference Result 24193 states and 34763 transitions. [2022-11-18 20:41:18,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:41:18,574 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 171 [2022-11-18 20:41:18,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:41:18,615 INFO L225 Difference]: With dead ends: 24193 [2022-11-18 20:41:18,616 INFO L226 Difference]: Without dead ends: 12826 [2022-11-18 20:41:18,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:41:18,650 INFO L413 NwaCegarLoop]: 1019 mSDtfsCounter, 2869 mSDsluCounter, 1979 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 1178 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3012 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 3387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1178 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:41:18,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3012 Valid, 2998 Invalid, 3387 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1178 Valid, 2207 Invalid, 2 Unknown, 0 Unchecked, 13.9s Time] [2022-11-18 20:41:18,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12826 states. [2022-11-18 20:41:19,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12826 to 11386. [2022-11-18 20:41:19,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11386 states, 9018 states have (on average 1.3907740075404746) internal successors, (12542), 9165 states have internal predecessors, (12542), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1876), 1712 states have call predecessors, (1876), 1694 states have call successors, (1876) [2022-11-18 20:41:19,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11386 states to 11386 states and 16117 transitions. [2022-11-18 20:41:19,749 INFO L78 Accepts]: Start accepts. Automaton has 11386 states and 16117 transitions. Word has length 171 [2022-11-18 20:41:19,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:41:19,750 INFO L495 AbstractCegarLoop]: Abstraction has 11386 states and 16117 transitions. [2022-11-18 20:41:19,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-18 20:41:19,750 INFO L276 IsEmpty]: Start isEmpty. Operand 11386 states and 16117 transitions. [2022-11-18 20:41:19,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-11-18 20:41:19,765 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:41:19,766 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:41:19,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:41:19,766 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:41:19,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:41:19,767 INFO L85 PathProgramCache]: Analyzing trace with hash 390081908, now seen corresponding path program 1 times [2022-11-18 20:41:19,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:41:19,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527797252] [2022-11-18 20:41:19,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:41:19,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:41:19,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:41:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:20,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:41:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:41:20,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:41:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:20,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:20,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 20:41:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-18 20:41:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:41:20,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 20:41:20,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-18 20:41:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-11-18 20:41:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:41:20,801 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-18 20:41:20,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:41:20,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527797252] [2022-11-18 20:41:20,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527797252] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:41:20,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:41:20,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:41:20,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648291619] [2022-11-18 20:41:20,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:41:20,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:41:20,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:41:20,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:41:20,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:41:20,804 INFO L87 Difference]: Start difference. First operand 11386 states and 16117 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:41:28,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:41:39,391 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:41:42,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:00,378 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:05,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:42:05,823 INFO L93 Difference]: Finished difference Result 29164 states and 41785 transitions. [2022-11-18 20:42:05,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-18 20:42:05,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 174 [2022-11-18 20:42:05,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:42:05,899 INFO L225 Difference]: With dead ends: 29164 [2022-11-18 20:42:05,899 INFO L226 Difference]: Without dead ends: 17781 [2022-11-18 20:42:05,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=124, Invalid=476, Unknown=0, NotChecked=0, Total=600 [2022-11-18 20:42:05,933 INFO L413 NwaCegarLoop]: 1944 mSDtfsCounter, 3283 mSDsluCounter, 11486 mSDsCounter, 0 mSdLazyCounter, 11277 mSolverCounterSat, 1200 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3486 SdHoareTripleChecker+Valid, 13430 SdHoareTripleChecker+Invalid, 12480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 11277 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 42.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:42:05,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3486 Valid, 13430 Invalid, 12480 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1200 Valid, 11277 Invalid, 3 Unknown, 0 Unchecked, 42.3s Time] [2022-11-18 20:42:05,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17781 states. [2022-11-18 20:42:07,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17781 to 11410. [2022-11-18 20:42:07,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11410 states, 9038 states have (on average 1.3899092719628237) internal successors, (12562), 9185 states have internal predecessors, (12562), 1703 states have call successors, (1703), 634 states have call predecessors, (1703), 668 states have return successors, (1880), 1716 states have call predecessors, (1880), 1698 states have call successors, (1880) [2022-11-18 20:42:07,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11410 states to 11410 states and 16145 transitions. [2022-11-18 20:42:07,058 INFO L78 Accepts]: Start accepts. Automaton has 11410 states and 16145 transitions. Word has length 174 [2022-11-18 20:42:07,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:42:07,058 INFO L495 AbstractCegarLoop]: Abstraction has 11410 states and 16145 transitions. [2022-11-18 20:42:07,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 20:42:07,059 INFO L276 IsEmpty]: Start isEmpty. Operand 11410 states and 16145 transitions. [2022-11-18 20:42:07,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-11-18 20:42:07,071 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:42:07,071 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:07,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:42:07,072 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:42:07,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:07,072 INFO L85 PathProgramCache]: Analyzing trace with hash -705171262, now seen corresponding path program 1 times [2022-11-18 20:42:07,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:07,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852626039] [2022-11-18 20:42:07,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:07,073 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:07,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:42:07,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:08,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:08,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:42:08,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:42:08,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:42:08,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:08,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:42:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:42:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-11-18 20:42:08,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:42:08,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-11-18 20:42:08,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-11-18 20:42:08,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-11-18 20:42:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:08,474 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:42:08,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:08,474 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852626039] [2022-11-18 20:42:08,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852626039] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:42:08,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:42:08,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 20:42:08,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123953373] [2022-11-18 20:42:08,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:42:08,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:42:08,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:08,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:42:08,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:42:08,477 INFO L87 Difference]: Start difference. First operand 11410 states and 16145 transitions. Second operand has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 20:42:15,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:25,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:28,765 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:30,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:32,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:34,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:36,786 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:38,399 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.61s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:44,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:00,362 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:02,729 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:04,733 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:06,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:07,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:10,103 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:12,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:14,543 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:16,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.85s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:21,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:21,047 INFO L93 Difference]: Finished difference Result 29324 states and 41973 transitions. [2022-11-18 20:43:21,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 20:43:21,048 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 184 [2022-11-18 20:43:21,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:21,118 INFO L225 Difference]: With dead ends: 29324 [2022-11-18 20:43:21,118 INFO L226 Difference]: Without dead ends: 17917 [2022-11-18 20:43:21,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=221, Invalid=901, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 20:43:21,150 INFO L413 NwaCegarLoop]: 1947 mSDtfsCounter, 3632 mSDsluCounter, 11941 mSDsCounter, 0 mSdLazyCounter, 11403 mSolverCounterSat, 1297 mSolverCounterUnsat, 12 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 67.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3835 SdHoareTripleChecker+Valid, 13888 SdHoareTripleChecker+Invalid, 12712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1297 IncrementalHoareTripleChecker+Valid, 11403 IncrementalHoareTripleChecker+Invalid, 12 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 69.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:21,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3835 Valid, 13888 Invalid, 12712 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1297 Valid, 11403 Invalid, 12 Unknown, 0 Unchecked, 69.3s Time] [2022-11-18 20:43:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17917 states. [2022-11-18 20:43:22,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17917 to 16522. [2022-11-18 20:43:22,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16522 states, 13050 states have (on average 1.3855938697318009) internal successors, (18082), 13269 states have internal predecessors, (18082), 2505 states have call successors, (2505), 912 states have call predecessors, (2505), 966 states have return successors, (2784), 2520 states have call predecessors, (2784), 2500 states have call successors, (2784) [2022-11-18 20:43:22,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16522 states to 16522 states and 23371 transitions. [2022-11-18 20:43:22,659 INFO L78 Accepts]: Start accepts. Automaton has 16522 states and 23371 transitions. Word has length 184 [2022-11-18 20:43:22,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:22,659 INFO L495 AbstractCegarLoop]: Abstraction has 16522 states and 23371 transitions. [2022-11-18 20:43:22,659 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.583333333333334) internal successors, (127), 7 states have internal predecessors, (127), 3 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 20:43:22,659 INFO L276 IsEmpty]: Start isEmpty. Operand 16522 states and 23371 transitions. [2022-11-18 20:43:22,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-11-18 20:43:22,669 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:22,670 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:22,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:43:22,670 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:22,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:22,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1406785047, now seen corresponding path program 1 times [2022-11-18 20:43:22,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:22,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060772187] [2022-11-18 20:43:22,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:22,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:22,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:43:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:23,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:43:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:43:23,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:43:23,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:23,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:43:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 20:43:23,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-11-18 20:43:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-18 20:43:23,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-11-18 20:43:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-11-18 20:43:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-11-18 20:43:23,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:23,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060772187] [2022-11-18 20:43:23,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060772187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:23,485 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:23,485 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:43:23,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467333630] [2022-11-18 20:43:23,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:23,487 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:43:23,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:23,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:43:23,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:43:23,488 INFO L87 Difference]: Start difference. First operand 16522 states and 23371 transitions. Second operand has 8 states, 8 states have (on average 16.125) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 20:43:29,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:34,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:37,443 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 [] [2022-11-18 20:43:45,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:43:45,728 INFO L93 Difference]: Finished difference Result 34979 states and 50107 transitions. [2022-11-18 20:43:45,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:43:45,729 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 186 [2022-11-18 20:43:45,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:43:45,797 INFO L225 Difference]: With dead ends: 34979 [2022-11-18 20:43:45,797 INFO L226 Difference]: Without dead ends: 18460 [2022-11-18 20:43:45,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:43:45,832 INFO L413 NwaCegarLoop]: 1022 mSDtfsCounter, 1584 mSDsluCounter, 3788 mSDsCounter, 0 mSdLazyCounter, 3862 mSolverCounterSat, 425 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1715 SdHoareTripleChecker+Valid, 4810 SdHoareTripleChecker+Invalid, 4290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 3862 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:43:45,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1715 Valid, 4810 Invalid, 4290 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [425 Valid, 3862 Invalid, 3 Unknown, 0 Unchecked, 19.8s Time] [2022-11-18 20:43:45,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18460 states. [2022-11-18 20:43:47,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18460 to 16546. [2022-11-18 20:43:47,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16546 states, 13074 states have (on average 1.3848860333486308) internal successors, (18106), 13293 states have internal predecessors, (18106), 2505 states have call successors, (2505), 912 states have call predecessors, (2505), 966 states have return successors, (2784), 2520 states have call predecessors, (2784), 2500 states have call successors, (2784) [2022-11-18 20:43:47,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16546 states to 16546 states and 23395 transitions. [2022-11-18 20:43:47,334 INFO L78 Accepts]: Start accepts. Automaton has 16546 states and 23395 transitions. Word has length 186 [2022-11-18 20:43:47,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:43:47,335 INFO L495 AbstractCegarLoop]: Abstraction has 16546 states and 23395 transitions. [2022-11-18 20:43:47,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.125) internal successors, (129), 4 states have internal predecessors, (129), 2 states have call successors, (19), 6 states have call predecessors, (19), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-18 20:43:47,335 INFO L276 IsEmpty]: Start isEmpty. Operand 16546 states and 23395 transitions. [2022-11-18 20:43:47,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-18 20:43:47,346 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:43:47,346 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:43:47,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:43:47,347 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:43:47,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:43:47,348 INFO L85 PathProgramCache]: Analyzing trace with hash -610576341, now seen corresponding path program 1 times [2022-11-18 20:43:47,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:43:47,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871091239] [2022-11-18 20:43:47,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:43:47,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:43:47,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:43:48,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:48,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:43:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:43:48,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:43:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:43:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:43:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:43:48,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-18 20:43:48,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:43:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:43:48,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-18 20:43:48,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-18 20:43:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:43:48,683 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:43:48,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:43:48,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871091239] [2022-11-18 20:43:48,684 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871091239] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:43:48,684 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:43:48,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:43:48,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101050273] [2022-11-18 20:43:48,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:43:48,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:43:48,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:43:48,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:43:48,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:43:48,687 INFO L87 Difference]: Start difference. First operand 16546 states and 23395 transitions. Second operand has 10 states, 10 states have (on average 12.8) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 20:43:55,597 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 [] [2022-11-18 20:44:00,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:04,441 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:06,449 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:08,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:10,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:12,474 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:20,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:20,665 INFO L93 Difference]: Finished difference Result 18871 states and 26827 transitions. [2022-11-18 20:44:20,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:44:20,668 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 194 [2022-11-18 20:44:20,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:20,738 INFO L225 Difference]: With dead ends: 18871 [2022-11-18 20:44:20,738 INFO L226 Difference]: Without dead ends: 17451 [2022-11-18 20:44:20,749 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:44:20,749 INFO L413 NwaCegarLoop]: 980 mSDtfsCounter, 2741 mSDsluCounter, 4655 mSDsCounter, 0 mSdLazyCounter, 4377 mSolverCounterSat, 1034 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2863 SdHoareTripleChecker+Valid, 5635 SdHoareTripleChecker+Invalid, 5418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1034 IncrementalHoareTripleChecker+Valid, 4377 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:20,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2863 Valid, 5635 Invalid, 5418 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1034 Valid, 4377 Invalid, 7 Unknown, 0 Unchecked, 29.8s Time] [2022-11-18 20:44:20,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17451 states. [2022-11-18 20:44:22,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17451 to 16169. [2022-11-18 20:44:22,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16169 states, 12782 states have (on average 1.3856986387106869) internal successors, (17712), 12990 states have internal predecessors, (17712), 2426 states have call successors, (2426), 906 states have call predecessors, (2426), 960 states have return successors, (2706), 2446 states have call predecessors, (2706), 2422 states have call successors, (2706) [2022-11-18 20:44:22,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16169 states to 16169 states and 22844 transitions. [2022-11-18 20:44:22,267 INFO L78 Accepts]: Start accepts. Automaton has 16169 states and 22844 transitions. Word has length 194 [2022-11-18 20:44:22,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:22,267 INFO L495 AbstractCegarLoop]: Abstraction has 16169 states and 22844 transitions. [2022-11-18 20:44:22,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.8) internal successors, (128), 5 states have internal predecessors, (128), 2 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 20:44:22,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16169 states and 22844 transitions. [2022-11-18 20:44:22,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-11-18 20:44:22,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:22,279 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:22,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:44:22,280 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:22,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:22,280 INFO L85 PathProgramCache]: Analyzing trace with hash -1855340822, now seen corresponding path program 1 times [2022-11-18 20:44:22,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:22,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386416776] [2022-11-18 20:44:22,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:22,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:22,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:44:22,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:22,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:22,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:22,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:22,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:22,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:22,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:44:22,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:22,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:44:22,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:22,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:44:22,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:22,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:23,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:23,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:44:23,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:44:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:44:23,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-18 20:44:23,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:44:23,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-11-18 20:44:23,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-11-18 20:44:23,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:23,167 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:44:23,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:23,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [386416776] [2022-11-18 20:44:23,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [386416776] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:23,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:23,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:44:23,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157549667] [2022-11-18 20:44:23,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:23,171 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:44:23,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:23,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:44:23,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:44:23,173 INFO L87 Difference]: Start difference. First operand 16169 states and 22844 transitions. Second operand has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 20:44:28,400 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:33,211 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:36,089 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:45,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:44:50,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:44:50,637 INFO L93 Difference]: Finished difference Result 33613 states and 47653 transitions. [2022-11-18 20:44:50,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:44:50,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 194 [2022-11-18 20:44:50,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:44:50,705 INFO L225 Difference]: With dead ends: 33613 [2022-11-18 20:44:50,705 INFO L226 Difference]: Without dead ends: 17447 [2022-11-18 20:44:50,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:44:50,744 INFO L413 NwaCegarLoop]: 1855 mSDtfsCounter, 2830 mSDsluCounter, 4252 mSDsCounter, 0 mSdLazyCounter, 4963 mSolverCounterSat, 880 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3016 SdHoareTripleChecker+Valid, 6107 SdHoareTripleChecker+Invalid, 5847 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 4963 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:44:50,745 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3016 Valid, 6107 Invalid, 5847 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [880 Valid, 4963 Invalid, 4 Unknown, 0 Unchecked, 25.1s Time] [2022-11-18 20:44:50,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17447 states. [2022-11-18 20:44:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17447 to 15969. [2022-11-18 20:44:52,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15969 states, 12657 states have (on average 1.3869795370150904) internal successors, (17555), 12852 states have internal predecessors, (17555), 2364 states have call successors, (2364), 902 states have call predecessors, (2364), 947 states have return successors, (2503), 2394 states have call predecessors, (2503), 2358 states have call successors, (2503) [2022-11-18 20:44:52,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15969 states to 15969 states and 22422 transitions. [2022-11-18 20:44:52,444 INFO L78 Accepts]: Start accepts. Automaton has 15969 states and 22422 transitions. Word has length 194 [2022-11-18 20:44:52,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:44:52,445 INFO L495 AbstractCegarLoop]: Abstraction has 15969 states and 22422 transitions. [2022-11-18 20:44:52,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.285714285714285) internal successors, (128), 3 states have internal predecessors, (128), 3 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-18 20:44:52,446 INFO L276 IsEmpty]: Start isEmpty. Operand 15969 states and 22422 transitions. [2022-11-18 20:44:52,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-11-18 20:44:52,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:44:52,456 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:44:52,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:44:52,457 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:44:52,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:44:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash -985941115, now seen corresponding path program 1 times [2022-11-18 20:44:52,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:44:52,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993115765] [2022-11-18 20:44:52,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:44:52,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:44:52,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:52,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:44:52,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:53,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:53,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:44:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:44:53,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:44:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:44:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:44:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:44:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-18 20:44:53,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:44:53,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:44:53,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 20:44:53,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-18 20:44:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-18 20:44:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-18 20:44:53,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-11-18 20:44:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:44:53,615 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:44:53,616 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:44:53,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993115765] [2022-11-18 20:44:53,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993115765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:44:53,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:44:53,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:44:53,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611096801] [2022-11-18 20:44:53,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:44:53,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:44:53,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:44:53,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:44:53,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:44:53,619 INFO L87 Difference]: Start difference. First operand 15969 states and 22422 transitions. Second operand has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (23), 8 states have call predecessors, (23), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:44:59,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:04,720 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:07,648 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 [] [2022-11-18 20:45:18,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:18,181 INFO L93 Difference]: Finished difference Result 34487 states and 48920 transitions. [2022-11-18 20:45:18,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:45:18,181 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (23), 8 states have call predecessors, (23), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 199 [2022-11-18 20:45:18,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:18,260 INFO L225 Difference]: With dead ends: 34487 [2022-11-18 20:45:18,260 INFO L226 Difference]: Without dead ends: 18521 [2022-11-18 20:45:18,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:45:18,298 INFO L413 NwaCegarLoop]: 959 mSDtfsCounter, 1943 mSDsluCounter, 3267 mSDsCounter, 0 mSdLazyCounter, 3815 mSolverCounterSat, 700 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2072 SdHoareTripleChecker+Valid, 4226 SdHoareTripleChecker+Invalid, 4518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 3815 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:18,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2072 Valid, 4226 Invalid, 4518 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [700 Valid, 3815 Invalid, 3 Unknown, 0 Unchecked, 22.2s Time] [2022-11-18 20:45:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18521 states. [2022-11-18 20:45:19,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18521 to 15981. [2022-11-18 20:45:19,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15981 states, 12669 states have (on average 1.3866129923435158) internal successors, (17567), 12864 states have internal predecessors, (17567), 2364 states have call successors, (2364), 902 states have call predecessors, (2364), 947 states have return successors, (2503), 2394 states have call predecessors, (2503), 2358 states have call successors, (2503) [2022-11-18 20:45:19,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15981 states to 15981 states and 22434 transitions. [2022-11-18 20:45:19,714 INFO L78 Accepts]: Start accepts. Automaton has 15981 states and 22434 transitions. Word has length 199 [2022-11-18 20:45:19,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:19,715 INFO L495 AbstractCegarLoop]: Abstraction has 15981 states and 22434 transitions. [2022-11-18 20:45:19,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.11111111111111) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (23), 8 states have call predecessors, (23), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-18 20:45:19,716 INFO L276 IsEmpty]: Start isEmpty. Operand 15981 states and 22434 transitions. [2022-11-18 20:45:19,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2022-11-18 20:45:19,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:19,726 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:19,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:45:19,726 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:45:19,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:19,726 INFO L85 PathProgramCache]: Analyzing trace with hash 1903311774, now seen corresponding path program 1 times [2022-11-18 20:45:19,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:19,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267041445] [2022-11-18 20:45:19,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:19,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:45:20,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:20,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:20,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:45:20,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:45:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:45:20,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:45:20,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:45:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:45:20,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-11-18 20:45:20,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-11-18 20:45:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-11-18 20:45:20,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-11-18 20:45:20,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-11-18 20:45:20,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-11-18 20:45:20,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:45:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-11-18 20:45:20,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:20,514 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-11-18 20:45:20,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:20,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267041445] [2022-11-18 20:45:20,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267041445] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:45:20,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760477920] [2022-11-18 20:45:20,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:20,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:45:20,515 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:45:20,519 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:45:20,535 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:45:21,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:21,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 2854 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 20:45:21,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:45:21,856 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:45:21,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:45:21,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760477920] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:45:21,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:45:21,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 14 [2022-11-18 20:45:21,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079225770] [2022-11-18 20:45:21,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:45:21,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:45:21,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:21,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:45:21,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:45:21,859 INFO L87 Difference]: Start difference. First operand 15981 states and 22434 transitions. Second operand has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 20:45:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:23,200 INFO L93 Difference]: Finished difference Result 16847 states and 23557 transitions. [2022-11-18 20:45:23,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:45:23,201 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 207 [2022-11-18 20:45:23,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:23,249 INFO L225 Difference]: With dead ends: 16847 [2022-11-18 20:45:23,249 INFO L226 Difference]: Without dead ends: 15754 [2022-11-18 20:45:23,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:45:23,259 INFO L413 NwaCegarLoop]: 1640 mSDtfsCounter, 9 mSDsluCounter, 6547 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 8187 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:23,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 8187 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:45:23,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15754 states. [2022-11-18 20:45:24,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15754 to 15730. [2022-11-18 20:45:24,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15730 states, 12510 states have (on average 1.3881694644284572) internal successors, (17366), 12693 states have internal predecessors, (17366), 2296 states have call successors, (2296), 877 states have call predecessors, (2296), 923 states have return successors, (2437), 2333 states have call predecessors, (2437), 2292 states have call successors, (2437) [2022-11-18 20:45:24,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15730 states to 15730 states and 22099 transitions. [2022-11-18 20:45:24,402 INFO L78 Accepts]: Start accepts. Automaton has 15730 states and 22099 transitions. Word has length 207 [2022-11-18 20:45:24,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:24,402 INFO L495 AbstractCegarLoop]: Abstraction has 15730 states and 22099 transitions. [2022-11-18 20:45:24,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.166666666666668) internal successors, (133), 5 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-18 20:45:24,403 INFO L276 IsEmpty]: Start isEmpty. Operand 15730 states and 22099 transitions. [2022-11-18 20:45:24,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2022-11-18 20:45:24,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:24,418 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:24,431 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:45:24,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2507ffef-3f65-470d-8d6a-80ee48dc5cce/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-11-18 20:45:24,628 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:45:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash 265614084, now seen corresponding path program 1 times [2022-11-18 20:45:24,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:24,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628554276] [2022-11-18 20:45:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:24,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:45:25,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:25,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:25,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:45:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:45:25,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:45:25,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:25,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:45:25,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:45:25,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:45:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 20:45:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:45:25,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:45:25,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:45:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:45:25,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 20:45:25,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:45:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-18 20:45:25,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-18 20:45:25,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:45:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-11-18 20:45:25,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-18 20:45:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:25,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:45:25,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:26,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:45:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:26,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:45:26,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:26,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-11-18 20:45:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:26,047 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 20:45:26,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:45:26,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628554276] [2022-11-18 20:45:26,048 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628554276] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:45:26,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:45:26,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:45:26,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314677021] [2022-11-18 20:45:26,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:45:26,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:45:26,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:45:26,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:45:26,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:45:26,050 INFO L87 Difference]: Start difference. First operand 15730 states and 22099 transitions. Second operand has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-18 20:45:32,496 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 [] [2022-11-18 20:45:37,878 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:40,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:42,782 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:45,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:47,332 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:49,207 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.87s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:45:57,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:45:57,636 INFO L93 Difference]: Finished difference Result 24577 states and 34779 transitions. [2022-11-18 20:45:57,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:45:57,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 256 [2022-11-18 20:45:57,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:45:57,699 INFO L225 Difference]: With dead ends: 24577 [2022-11-18 20:45:57,700 INFO L226 Difference]: Without dead ends: 17010 [2022-11-18 20:45:57,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:45:57,721 INFO L413 NwaCegarLoop]: 988 mSDtfsCounter, 1454 mSDsluCounter, 5732 mSDsCounter, 0 mSdLazyCounter, 5379 mSolverCounterSat, 330 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 28.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 6720 SdHoareTripleChecker+Invalid, 5712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 5379 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:45:57,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1571 Valid, 6720 Invalid, 5712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [330 Valid, 5379 Invalid, 3 Unknown, 0 Unchecked, 29.4s Time] [2022-11-18 20:45:57,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17010 states. [2022-11-18 20:45:58,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17010 to 15724. [2022-11-18 20:45:58,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15724 states, 12504 states have (on average 1.38787587971849) internal successors, (17354), 12687 states have internal predecessors, (17354), 2296 states have call successors, (2296), 877 states have call predecessors, (2296), 923 states have return successors, (2437), 2333 states have call predecessors, (2437), 2292 states have call successors, (2437) [2022-11-18 20:45:58,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15724 states to 15724 states and 22087 transitions. [2022-11-18 20:45:58,968 INFO L78 Accepts]: Start accepts. Automaton has 15724 states and 22087 transitions. Word has length 256 [2022-11-18 20:45:58,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:45:58,968 INFO L495 AbstractCegarLoop]: Abstraction has 15724 states and 22087 transitions. [2022-11-18 20:45:58,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.909090909090908) internal successors, (164), 5 states have internal predecessors, (164), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-18 20:45:58,969 INFO L276 IsEmpty]: Start isEmpty. Operand 15724 states and 22087 transitions. [2022-11-18 20:45:58,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-11-18 20:45:58,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:45:58,985 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:45:58,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:45:58,985 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:45:58,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:45:58,986 INFO L85 PathProgramCache]: Analyzing trace with hash 1618381987, now seen corresponding path program 1 times [2022-11-18 20:45:58,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:45:58,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011594940] [2022-11-18 20:45:58,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:45:58,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:45:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:45:59,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:59,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:59,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:59,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-18 20:45:59,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:45:59,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-18 20:45:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:59,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:59,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:45:59,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:45:59,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:45:59,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 20:45:59,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:59,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:45:59,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:45:59,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:45:59,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 20:45:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:45:59,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 20:45:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-18 20:46:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 20:46:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:46:00,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-18 20:46:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 20:46:00,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:46:00,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:46:00,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-18 20:46:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-11-18 20:46:00,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 20:46:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-11-18 20:46:00,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:46:00,256 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-11-18 20:46:00,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:46:00,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011594940] [2022-11-18 20:46:00,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011594940] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:46:00,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:46:00,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 20:46:00,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511467977] [2022-11-18 20:46:00,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:46:00,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:46:00,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:46:00,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:46:00,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:46:00,261 INFO L87 Difference]: Start difference. First operand 15724 states and 22087 transitions. Second operand has 11 states, 11 states have (on average 15.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-18 20:46:06,497 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:46:11,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:46:13,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.79s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:46:15,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:46:17,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:46:19,577 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.84s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:46:21,583 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:46:23,513 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.93s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:46:32,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:46:32,855 INFO L93 Difference]: Finished difference Result 17436 states and 24512 transitions. [2022-11-18 20:46:32,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:46:32,856 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) Word has length 257 [2022-11-18 20:46:32,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:46:32,858 INFO L225 Difference]: With dead ends: 17436 [2022-11-18 20:46:32,858 INFO L226 Difference]: Without dead ends: 0 [2022-11-18 20:46:32,888 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:46:32,888 INFO L413 NwaCegarLoop]: 973 mSDtfsCounter, 2487 mSDsluCounter, 4679 mSDsCounter, 0 mSdLazyCounter, 4512 mSolverCounterSat, 846 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2604 SdHoareTripleChecker+Valid, 5652 SdHoareTripleChecker+Invalid, 5362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 846 IncrementalHoareTripleChecker+Valid, 4512 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:46:32,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2604 Valid, 5652 Invalid, 5362 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [846 Valid, 4512 Invalid, 4 Unknown, 0 Unchecked, 31.2s Time] [2022-11-18 20:46:32,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-18 20:46:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-18 20:46:32,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:46:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-18 20:46:32,891 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 257 [2022-11-18 20:46:32,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:46:32,892 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-18 20:46:32,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 15.0) internal successors, (165), 5 states have internal predecessors, (165), 2 states have call successors, (29), 7 states have call predecessors, (29), 3 states have return successors, (28), 3 states have call predecessors, (28), 2 states have call successors, (28) [2022-11-18 20:46:32,892 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-18 20:46:32,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-18 20:46:32,894 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-18 20:46:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:46:32,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.