./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc --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 a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:59:32,195 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:59:32,197 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:59:32,226 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:59:32,227 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:59:32,228 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:59:32,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:59:32,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:59:32,233 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:59:32,234 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:59:32,236 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:59:32,237 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:59:32,237 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:59:32,239 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:59:32,240 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:59:32,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:59:32,243 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:59:32,244 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:59:32,246 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:59:32,248 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:59:32,250 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:59:32,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:59:32,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:59:32,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:59:32,258 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:59:32,259 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:59:32,259 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:59:32,260 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:59:32,261 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:59:32,262 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:59:32,263 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:59:32,264 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:59:32,265 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:59:32,266 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:59:32,267 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:59:32,267 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:59:32,268 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:59:32,268 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:59:32,269 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:59:32,270 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:59:32,270 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:59:32,271 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-02 20:59:32,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:59:32,317 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:59:32,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:59:32,319 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:59:32,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:59:32,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:59:32,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:59:32,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:59:32,322 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:59:32,322 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:59:32,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:59:32,323 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:59:32,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:59:32,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:59:32,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:59:32,324 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:59:32,325 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:59:32,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:59:32,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:59:32,325 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:59:32,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:59:32,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:32,326 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:59:32,326 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:59:32,327 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:59:32,327 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:59:32,327 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:59:32,327 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:59:32,328 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:59:32,328 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:59:32,328 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_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a78ad5bb06da9a7367e7c9e45cee20fe00113336b7bc544675fdd46fc445ae5c [2022-11-02 20:59:32,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:59:32,686 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:59:32,690 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:59:32,692 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:59:32,693 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:59:32,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-11-02 20:59:32,768 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/data/8ea392691/4e37e8ce0d694e1083054b65cf77f5db/FLAG0180caffc [2022-11-02 20:59:33,733 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:59:33,734 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-11-02 20:59:33,791 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/data/8ea392691/4e37e8ce0d694e1083054b65cf77f5db/FLAG0180caffc [2022-11-02 20:59:34,159 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/data/8ea392691/4e37e8ce0d694e1083054b65cf77f5db [2022-11-02 20:59:34,162 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:59:34,163 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:59:34,165 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:34,165 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:59:34,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:59:34,169 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:34" (1/1) ... [2022-11-02 20:59:34,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b88ecfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:34, skipping insertion in model container [2022-11-02 20:59:34,171 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:59:34" (1/1) ... [2022-11-02 20:59:34,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:59:34,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:59:35,442 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-11-02 20:59:35,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:36,029 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:59:36,258 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i[181063,181076] [2022-11-02 20:59:36,446 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:59:36,553 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:59:36,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36 WrapperNode [2022-11-02 20:59:36,555 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:59:36,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:36,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:59:36,558 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:59:36,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:36,662 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:36,777 INFO L138 Inliner]: procedures = 183, calls = 1615, calls flagged for inlining = 84, calls inlined = 65, statements flattened = 2934 [2022-11-02 20:59:36,777 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:59:36,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:59:36,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:59:36,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:59:36,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:36,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:36,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:36,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:36,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:36,984 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:37,001 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:37,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:37,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:59:37,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:59:37,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:59:37,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:59:37,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (1/1) ... [2022-11-02 20:59:37,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:59:37,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:59:37,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:59:37,124 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:59:37,162 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-11-02 20:59:37,162 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-11-02 20:59:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_disconnect [2022-11-02 20:59:37,163 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_disconnect [2022-11-02 20:59:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-02 20:59:37,163 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_fill_bulk_urb_5 [2022-11-02 20:59:37,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_fill_bulk_urb_5 [2022-11-02 20:59:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_submit_urb_2 [2022-11-02 20:59:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_submit_urb_2 [2022-11-02 20:59:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-02 20:59:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2022-11-02 20:59:37,164 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_bulk_msg [2022-11-02 20:59:37,164 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-02 20:59:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-11-02 20:59:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-11-02 20:59:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:59:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2022-11-02 20:59:37,165 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_push [2022-11-02 20:59:37,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_urb [2022-11-02 20:59:37,166 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_urb [2022-11-02 20:59:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-02 20:59:37,166 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-02 20:59:37,166 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2022-11-02 20:59:37,166 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2022-11-02 20:59:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_stop [2022-11-02 20:59:37,167 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_stop [2022-11-02 20:59:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-11-02 20:59:37,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-11-02 20:59:37,167 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_urb [2022-11-02 20:59:37,167 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_urb [2022-11-02 20:59:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure device_unlock [2022-11-02 20:59:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure device_unlock [2022-11-02 20:59:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-02 20:59:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-02 20:59:37,168 INFO L130 BoogieDeclarations]: Found specification of procedure __netdev_alloc_skb [2022-11-02 20:59:37,168 INFO L138 BoogieDeclarations]: Found implementation of procedure __netdev_alloc_skb [2022-11-02 20:59:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:59:37,169 INFO L130 BoogieDeclarations]: Found specification of procedure p54_free_skb [2022-11-02 20:59:37,169 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_free_skb [2022-11-02 20:59:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-02 20:59:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-02 20:59:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2022-11-02 20:59:37,170 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_pull [2022-11-02 20:59:37,170 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_pre_reset [2022-11-02 20:59:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_pre_reset [2022-11-02 20:59:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-02 20:59:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-02 20:59:37,171 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_rx_cb [2022-11-02 20:59:37,171 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_rx_cb [2022-11-02 20:59:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-02 20:59:37,172 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-02 20:59:37,172 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-02 20:59:37,172 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-02 20:59:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:59:37,173 INFO L130 BoogieDeclarations]: Found specification of procedure crc32_le [2022-11-02 20:59:37,173 INFO L138 BoogieDeclarations]: Found implementation of procedure crc32_le [2022-11-02 20:59:37,174 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2022-11-02 20:59:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2022-11-02 20:59:37,175 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_3 [2022-11-02 20:59:37,175 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_3 [2022-11-02 20:59:37,176 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-11-02 20:59:37,176 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-11-02 20:59:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:59:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_read [2022-11-02 20:59:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_read [2022-11-02 20:59:37,177 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_write [2022-11-02 20:59:37,177 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_write [2022-11-02 20:59:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2022-11-02 20:59:37,178 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2022-11-02 20:59:37,178 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-11-02 20:59:37,179 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-11-02 20:59:37,179 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:59:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-02 20:59:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_dev [2022-11-02 20:59:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_dev [2022-11-02 20:59:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-11-02 20:59:37,180 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 20:59:37,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2022-11-02 20:59:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_resume [2022-11-02 20:59:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_resume [2022-11-02 20:59:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-02 20:59:37,181 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-02 20:59:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-02 20:59:37,181 INFO L130 BoogieDeclarations]: Found specification of procedure p54_find_type [2022-11-02 20:59:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure p54_find_type [2022-11-02 20:59:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure usb_anchor_urb [2022-11-02 20:59:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_anchor_urb [2022-11-02 20:59:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_dev [2022-11-02 20:59:37,182 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_dev [2022-11-02 20:59:37,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:59:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-02 20:59:37,183 INFO L130 BoogieDeclarations]: Found specification of procedure skb_queue_tail [2022-11-02 20:59:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_queue_tail [2022-11-02 20:59:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_free_urbs [2022-11-02 20:59:37,184 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_free_urbs [2022-11-02 20:59:37,184 INFO L130 BoogieDeclarations]: Found specification of procedure skb_unlink [2022-11-02 20:59:37,185 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_unlink [2022-11-02 20:59:37,185 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_open [2022-11-02 20:59:37,186 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_open [2022-11-02 20:59:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-11-02 20:59:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-11-02 20:59:37,187 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2022-11-02 20:59:37,187 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2022-11-02 20:59:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-11-02 20:59:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-11-02 20:59:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_bulk_msg [2022-11-02 20:59:37,188 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_bulk_msg [2022-11-02 20:59:37,188 INFO L130 BoogieDeclarations]: Found specification of procedure usb_unanchor_urb [2022-11-02 20:59:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_unanchor_urb [2022-11-02 20:59:37,189 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-11-02 20:59:37,189 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-11-02 20:59:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure p54u_post_reset [2022-11-02 20:59:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure p54u_post_reset [2022-11-02 20:59:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_free_urb [2022-11-02 20:59:37,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_free_urb [2022-11-02 20:59:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:59:37,190 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2022-11-02 20:59:37,191 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2022-11-02 20:59:37,192 INFO L130 BoogieDeclarations]: Found specification of procedure skb_tail_pointer [2022-11-02 20:59:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_tail_pointer [2022-11-02 20:59:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-02 20:59:37,195 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-11-02 20:59:37,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-11-02 20:59:37,196 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2022-11-02 20:59:37,196 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2022-11-02 20:59:37,198 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:59:37,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:59:37,864 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:59:37,867 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:59:38,249 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-11-02 20:59:39,446 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stop___0FINAL: assume true; [2022-11-02 21:00:00,425 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 21:00:00,449 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 21:00:00,449 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-02 21:00:00,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:00 BoogieIcfgContainer [2022-11-02 21:00:00,453 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 21:00:00,457 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 21:00:00,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 21:00:00,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 21:00:00,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:59:34" (1/3) ... [2022-11-02 21:00:00,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e28cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:00, skipping insertion in model container [2022-11-02 21:00:00,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:59:36" (2/3) ... [2022-11-02 21:00:00,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22e28cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 09:00:00, skipping insertion in model container [2022-11-02 21:00:00,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 09:00:00" (3/3) ... [2022-11-02 21:00:00,465 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--net--wireless--p54--p54usb.ko-entry_point.cil.out.i [2022-11-02 21:00:00,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 21:00:00,485 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 21:00:00,587 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 21:00:00,593 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;@57056323, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 21:00:00,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-02 21:00:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 836 states, 591 states have (on average 1.3468697123519457) internal successors, (796), 617 states have internal predecessors, (796), 190 states have call successors, (190), 55 states have call predecessors, (190), 53 states have return successors, (185), 182 states have call predecessors, (185), 185 states have call successors, (185) [2022-11-02 21:00:00,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-02 21:00:00,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:00,616 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] [2022-11-02 21:00:00,617 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:00,625 INFO L85 PathProgramCache]: Analyzing trace with hash -753531349, now seen corresponding path program 1 times [2022-11-02 21:00:00,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:00,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63537530] [2022-11-02 21:00:00,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:00,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:01,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:01,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 21:00:01,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:01,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63537530] [2022-11-02 21:00:01,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63537530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:01,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:01,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:01,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806297095] [2022-11-02 21:00:01,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:01,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:01,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:01,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:01,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:01,717 INFO L87 Difference]: Start difference. First operand has 836 states, 591 states have (on average 1.3468697123519457) internal successors, (796), 617 states have internal predecessors, (796), 190 states have call successors, (190), 55 states have call predecessors, (190), 53 states have return successors, (185), 182 states have call predecessors, (185), 185 states have call successors, (185) Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:00:03,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:05,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:07,839 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:12,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:12,205 INFO L93 Difference]: Finished difference Result 2794 states and 4030 transitions. [2022-11-02 21:00:12,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:12,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 28 [2022-11-02 21:00:12,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:12,242 INFO L225 Difference]: With dead ends: 2794 [2022-11-02 21:00:12,243 INFO L226 Difference]: Without dead ends: 1941 [2022-11-02 21:00:12,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:12,258 INFO L413 NwaCegarLoop]: 1226 mSDtfsCounter, 2235 mSDsluCounter, 2002 mSDsCounter, 0 mSdLazyCounter, 1223 mSolverCounterSat, 1238 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2355 SdHoareTripleChecker+Valid, 3228 SdHoareTripleChecker+Invalid, 2464 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1238 IncrementalHoareTripleChecker+Valid, 1223 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:12,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2355 Valid, 3228 Invalid, 2464 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1238 Valid, 1223 Invalid, 3 Unknown, 0 Unchecked, 10.0s Time] [2022-11-02 21:00:12,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2022-11-02 21:00:12,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1612. [2022-11-02 21:00:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1146 states have (on average 1.3342059336823735) internal successors, (1529), 1180 states have internal predecessors, (1529), 362 states have call successors, (362), 104 states have call predecessors, (362), 103 states have return successors, (357), 351 states have call predecessors, (357), 357 states have call successors, (357) [2022-11-02 21:00:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2248 transitions. [2022-11-02 21:00:12,458 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2248 transitions. Word has length 28 [2022-11-02 21:00:12,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:12,459 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2248 transitions. [2022-11-02 21:00:12,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 3 states have internal predecessors, (23), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-02 21:00:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2248 transitions. [2022-11-02 21:00:12,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 21:00:12,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:12,462 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] [2022-11-02 21:00:12,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 21:00:12,463 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:12,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:12,463 INFO L85 PathProgramCache]: Analyzing trace with hash -829331153, now seen corresponding path program 1 times [2022-11-02 21:00:12,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:12,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588174645] [2022-11-02 21:00:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:12,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:12,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:12,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:12,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:12,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:12,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:00:12,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:12,844 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:12,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:12,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588174645] [2022-11-02 21:00:12,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588174645] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:12,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:12,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:12,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927547396] [2022-11-02 21:00:12,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:12,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:12,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:12,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:12,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:12,848 INFO L87 Difference]: Start difference. First operand 1612 states and 2248 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:14,903 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:16,923 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:19,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:19,135 INFO L93 Difference]: Finished difference Result 1967 states and 2756 transitions. [2022-11-02 21:00:19,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 21:00:19,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-02 21:00:19,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:19,150 INFO L225 Difference]: With dead ends: 1967 [2022-11-02 21:00:19,150 INFO L226 Difference]: Without dead ends: 1954 [2022-11-02 21:00:19,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:19,154 INFO L413 NwaCegarLoop]: 1081 mSDtfsCounter, 1673 mSDsluCounter, 1103 mSDsCounter, 0 mSdLazyCounter, 573 mSolverCounterSat, 706 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1770 SdHoareTripleChecker+Valid, 2184 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 706 IncrementalHoareTripleChecker+Valid, 573 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:19,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1770 Valid, 2184 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [706 Valid, 573 Invalid, 2 Unknown, 0 Unchecked, 6.1s Time] [2022-11-02 21:00:19,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2022-11-02 21:00:19,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1612. [2022-11-02 21:00:19,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1612 states, 1146 states have (on average 1.3333333333333333) internal successors, (1528), 1180 states have internal predecessors, (1528), 362 states have call successors, (362), 104 states have call predecessors, (362), 103 states have return successors, (357), 351 states have call predecessors, (357), 357 states have call successors, (357) [2022-11-02 21:00:19,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1612 states to 1612 states and 2247 transitions. [2022-11-02 21:00:19,287 INFO L78 Accepts]: Start accepts. Automaton has 1612 states and 2247 transitions. Word has length 38 [2022-11-02 21:00:19,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:19,288 INFO L495 AbstractCegarLoop]: Abstraction has 1612 states and 2247 transitions. [2022-11-02 21:00:19,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:19,288 INFO L276 IsEmpty]: Start isEmpty. Operand 1612 states and 2247 transitions. [2022-11-02 21:00:19,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-11-02 21:00:19,295 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:19,295 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] [2022-11-02 21:00:19,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 21:00:19,303 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:19,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:19,303 INFO L85 PathProgramCache]: Analyzing trace with hash -772072851, now seen corresponding path program 1 times [2022-11-02 21:00:19,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:19,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346669877] [2022-11-02 21:00:19,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:19,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:00:20,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:20,179 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:20,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:20,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346669877] [2022-11-02 21:00:20,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346669877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:20,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:20,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:20,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153142385] [2022-11-02 21:00:20,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:20,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:20,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:20,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:20,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:20,187 INFO L87 Difference]: Start difference. First operand 1612 states and 2247 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:22,246 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:24,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:28,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:28,742 INFO L93 Difference]: Finished difference Result 5452 states and 7784 transitions. [2022-11-02 21:00:28,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:28,742 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 38 [2022-11-02 21:00:28,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:28,767 INFO L225 Difference]: With dead ends: 5452 [2022-11-02 21:00:28,767 INFO L226 Difference]: Without dead ends: 3858 [2022-11-02 21:00:28,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:28,776 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 2070 mSDsluCounter, 2129 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 1165 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 3461 SdHoareTripleChecker+Invalid, 2451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1165 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:28,777 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 3461 Invalid, 2451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1165 Valid, 1284 Invalid, 2 Unknown, 0 Unchecked, 8.1s Time] [2022-11-02 21:00:28,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3858 states. [2022-11-02 21:00:28,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3858 to 3195. [2022-11-02 21:00:28,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 2274 states have (on average 1.3324538258575198) internal successors, (3030), 2338 states have internal predecessors, (3030), 716 states have call successors, (716), 205 states have call predecessors, (716), 204 states have return successors, (745), 699 states have call predecessors, (745), 711 states have call successors, (745) [2022-11-02 21:00:28,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 4491 transitions. [2022-11-02 21:00:28,991 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 4491 transitions. Word has length 38 [2022-11-02 21:00:28,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:28,991 INFO L495 AbstractCegarLoop]: Abstraction has 3195 states and 4491 transitions. [2022-11-02 21:00:28,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 3 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:28,992 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 4491 transitions. [2022-11-02 21:00:28,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-11-02 21:00:28,995 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:28,996 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] [2022-11-02 21:00:28,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 21:00:28,996 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:28,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:28,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1835132963, now seen corresponding path program 1 times [2022-11-02 21:00:28,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:28,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1459383674] [2022-11-02 21:00:29,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:29,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:29,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:29,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:00:29,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:29,804 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:29,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:29,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1459383674] [2022-11-02 21:00:29,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1459383674] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:29,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:29,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:29,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757461738] [2022-11-02 21:00:29,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:29,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:29,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:29,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:29,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:29,807 INFO L87 Difference]: Start difference. First operand 3195 states and 4491 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:31,867 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:33,892 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:38,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:38,716 INFO L93 Difference]: Finished difference Result 10841 states and 15828 transitions. [2022-11-02 21:00:38,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:38,717 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-11-02 21:00:38,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:38,774 INFO L225 Difference]: With dead ends: 10841 [2022-11-02 21:00:38,774 INFO L226 Difference]: Without dead ends: 7664 [2022-11-02 21:00:38,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:38,797 INFO L413 NwaCegarLoop]: 1297 mSDtfsCounter, 2181 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 1232 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2285 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 2506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1232 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:38,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2285 Valid, 3410 Invalid, 2506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1232 Valid, 1272 Invalid, 2 Unknown, 0 Unchecked, 8.2s Time] [2022-11-02 21:00:38,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7664 states. [2022-11-02 21:00:39,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7664 to 6530. [2022-11-02 21:00:39,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6530 states, 4659 states have (on average 1.3243185232882593) internal successors, (6170), 4783 states have internal predecessors, (6170), 1440 states have call successors, (1440), 407 states have call predecessors, (1440), 430 states have return successors, (1683), 1435 states have call predecessors, (1683), 1435 states have call successors, (1683) [2022-11-02 21:00:39,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6530 states to 6530 states and 9293 transitions. [2022-11-02 21:00:39,357 INFO L78 Accepts]: Start accepts. Automaton has 6530 states and 9293 transitions. Word has length 39 [2022-11-02 21:00:39,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:39,359 INFO L495 AbstractCegarLoop]: Abstraction has 6530 states and 9293 transitions. [2022-11-02 21:00:39,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:39,360 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states and 9293 transitions. [2022-11-02 21:00:39,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-02 21:00:39,361 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:39,361 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] [2022-11-02 21:00:39,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 21:00:39,362 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:39,362 INFO L85 PathProgramCache]: Analyzing trace with hash 1054139440, now seen corresponding path program 1 times [2022-11-02 21:00:39,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:39,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308397061] [2022-11-02 21:00:39,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:39,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:39,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:39,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:00:39,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:39,756 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:39,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:39,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308397061] [2022-11-02 21:00:39,757 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308397061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:39,757 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:39,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:39,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086233033] [2022-11-02 21:00:39,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:39,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:39,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:39,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:39,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:39,760 INFO L87 Difference]: Start difference. First operand 6530 states and 9293 transitions. Second operand has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:41,817 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:43,832 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:48,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:48,039 INFO L93 Difference]: Finished difference Result 7662 states and 11141 transitions. [2022-11-02 21:00:48,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:00:48,040 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 40 [2022-11-02 21:00:48,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:48,086 INFO L225 Difference]: With dead ends: 7662 [2022-11-02 21:00:48,086 INFO L226 Difference]: Without dead ends: 7659 [2022-11-02 21:00:48,092 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-02 21:00:48,093 INFO L413 NwaCegarLoop]: 1295 mSDtfsCounter, 2185 mSDsluCounter, 2107 mSDsCounter, 0 mSdLazyCounter, 1261 mSolverCounterSat, 1231 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 3402 SdHoareTripleChecker+Invalid, 2494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1231 IncrementalHoareTripleChecker+Valid, 1261 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:48,098 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 3402 Invalid, 2494 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1231 Valid, 1261 Invalid, 2 Unknown, 0 Unchecked, 7.7s Time] [2022-11-02 21:00:48,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7659 states. [2022-11-02 21:00:48,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7659 to 6531. [2022-11-02 21:00:48,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6531 states, 4660 states have (on average 1.3242489270386266) internal successors, (6171), 4784 states have internal predecessors, (6171), 1440 states have call successors, (1440), 407 states have call predecessors, (1440), 430 states have return successors, (1683), 1435 states have call predecessors, (1683), 1435 states have call successors, (1683) [2022-11-02 21:00:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6531 states to 6531 states and 9294 transitions. [2022-11-02 21:00:48,665 INFO L78 Accepts]: Start accepts. Automaton has 6531 states and 9294 transitions. Word has length 40 [2022-11-02 21:00:48,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:48,666 INFO L495 AbstractCegarLoop]: Abstraction has 6531 states and 9294 transitions. [2022-11-02 21:00:48,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:48,666 INFO L276 IsEmpty]: Start isEmpty. Operand 6531 states and 9294 transitions. [2022-11-02 21:00:48,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-02 21:00:48,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:48,668 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] [2022-11-02 21:00:48,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 21:00:48,668 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:48,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:48,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1681818426, now seen corresponding path program 1 times [2022-11-02 21:00:48,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:48,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024401212] [2022-11-02 21:00:48,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:48,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:48,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:48,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:49,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:49,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:00:49,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:49,049 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:49,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:49,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024401212] [2022-11-02 21:00:49,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024401212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:49,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:49,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:49,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995139984] [2022-11-02 21:00:49,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:49,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:49,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:49,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:49,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:49,052 INFO L87 Difference]: Start difference. First operand 6531 states and 9294 transitions. Second operand has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:51,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:53,120 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:00:55,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:00:55,347 INFO L93 Difference]: Finished difference Result 7658 states and 11137 transitions. [2022-11-02 21:00:55,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:00:55,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 41 [2022-11-02 21:00:55,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:00:55,385 INFO L225 Difference]: With dead ends: 7658 [2022-11-02 21:00:55,385 INFO L226 Difference]: Without dead ends: 7655 [2022-11-02 21:00:55,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:00:55,390 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 1646 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 700 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1741 SdHoareTripleChecker+Valid, 2132 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:00:55,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1741 Valid, 2132 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 568 Invalid, 2 Unknown, 0 Unchecked, 5.8s Time] [2022-11-02 21:00:55,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7655 states. [2022-11-02 21:00:55,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7655 to 6530. [2022-11-02 21:00:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6530 states, 4660 states have (on average 1.3240343347639485) internal successors, (6170), 4783 states have internal predecessors, (6170), 1439 states have call successors, (1439), 407 states have call predecessors, (1439), 430 states have return successors, (1683), 1435 states have call predecessors, (1683), 1435 states have call successors, (1683) [2022-11-02 21:00:55,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6530 states to 6530 states and 9292 transitions. [2022-11-02 21:00:55,875 INFO L78 Accepts]: Start accepts. Automaton has 6530 states and 9292 transitions. Word has length 41 [2022-11-02 21:00:55,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:00:55,877 INFO L495 AbstractCegarLoop]: Abstraction has 6530 states and 9292 transitions. [2022-11-02 21:00:55,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.2) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:55,878 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states and 9292 transitions. [2022-11-02 21:00:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-02 21:00:55,881 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:00:55,881 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] [2022-11-02 21:00:55,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-02 21:00:55,881 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:00:55,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:00:55,882 INFO L85 PathProgramCache]: Analyzing trace with hash -597161485, now seen corresponding path program 1 times [2022-11-02 21:00:55,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:00:55,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654886653] [2022-11-02 21:00:55,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:00:55,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:00:55,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:00:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:00:56,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:00:56,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:00:56,210 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-02 21:00:56,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:00:56,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654886653] [2022-11-02 21:00:56,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654886653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:00:56,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:00:56,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 21:00:56,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096242393] [2022-11-02 21:00:56,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:00:56,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:00:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:00:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:00:56,213 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 21:00:56,214 INFO L87 Difference]: Start difference. First operand 6530 states and 9292 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:00:58,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:00,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:02,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:02,509 INFO L93 Difference]: Finished difference Result 7657 states and 11135 transitions. [2022-11-02 21:01:02,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 21:01:02,509 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 42 [2022-11-02 21:01:02,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:02,546 INFO L225 Difference]: With dead ends: 7657 [2022-11-02 21:01:02,546 INFO L226 Difference]: Without dead ends: 7645 [2022-11-02 21:01:02,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:02,553 INFO L413 NwaCegarLoop]: 1060 mSDtfsCounter, 1643 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 699 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 2130 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:02,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 2130 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 560 Invalid, 2 Unknown, 0 Unchecked, 5.7s Time] [2022-11-02 21:01:02,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7645 states. [2022-11-02 21:01:03,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7645 to 6520. [2022-11-02 21:01:03,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6520 states, 4651 states have (on average 1.3238013330466567) internal successors, (6157), 4773 states have internal predecessors, (6157), 1438 states have call successors, (1438), 407 states have call predecessors, (1438), 430 states have return successors, (1683), 1435 states have call predecessors, (1683), 1435 states have call successors, (1683) [2022-11-02 21:01:03,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6520 states to 6520 states and 9278 transitions. [2022-11-02 21:01:03,139 INFO L78 Accepts]: Start accepts. Automaton has 6520 states and 9278 transitions. Word has length 42 [2022-11-02 21:01:03,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:03,140 INFO L495 AbstractCegarLoop]: Abstraction has 6520 states and 9278 transitions. [2022-11-02 21:01:03,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 3 states have internal predecessors, (32), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-02 21:01:03,140 INFO L276 IsEmpty]: Start isEmpty. Operand 6520 states and 9278 transitions. [2022-11-02 21:01:03,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-02 21:01:03,149 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:03,149 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 21:01:03,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-02 21:01:03,149 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:03,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:03,150 INFO L85 PathProgramCache]: Analyzing trace with hash 2054114664, now seen corresponding path program 1 times [2022-11-02 21:01:03,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:03,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720256071] [2022-11-02 21:01:03,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:03,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:03,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:03,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:01:03,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-02 21:01:03,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:01:03,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 21:01:03,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:01:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:01:03,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 21:01:03,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:03,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:01:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:01:03,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:03,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:01:03,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 21:01:03,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 21:01:03,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 21:01:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:03,876 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:01:03,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:03,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720256071] [2022-11-02 21:01:03,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720256071] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:03,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:03,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:01:03,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75713636] [2022-11-02 21:01:03,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:03,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:01:03,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:03,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:01:03,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:03,879 INFO L87 Difference]: Start difference. First operand 6520 states and 9278 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 9 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 21:01:05,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:07,946 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:13,304 INFO L93 Difference]: Finished difference Result 16735 states and 24732 transitions. [2022-11-02 21:01:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-02 21:01:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 9 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 146 [2022-11-02 21:01:13,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:13,354 INFO L225 Difference]: With dead ends: 16735 [2022-11-02 21:01:13,355 INFO L226 Difference]: Without dead ends: 10233 [2022-11-02 21:01:13,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:01:13,383 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1847 mSDsluCounter, 1926 mSDsCounter, 0 mSdLazyCounter, 2004 mSolverCounterSat, 1228 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2032 SdHoareTripleChecker+Valid, 2923 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1228 IncrementalHoareTripleChecker+Valid, 2004 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:13,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2032 Valid, 2923 Invalid, 3234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1228 Valid, 2004 Invalid, 2 Unknown, 0 Unchecked, 8.3s Time] [2022-11-02 21:01:13,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10233 states. [2022-11-02 21:01:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10233 to 7386. [2022-11-02 21:01:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7386 states, 5286 states have (on average 1.3047673098751418) internal successors, (6897), 5428 states have internal predecessors, (6897), 1564 states have call successors, (1564), 408 states have call predecessors, (1564), 535 states have return successors, (2125), 1657 states have call predecessors, (2125), 1561 states have call successors, (2125) [2022-11-02 21:01:14,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7386 states to 7386 states and 10586 transitions. [2022-11-02 21:01:14,316 INFO L78 Accepts]: Start accepts. Automaton has 7386 states and 10586 transitions. Word has length 146 [2022-11-02 21:01:14,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:14,317 INFO L495 AbstractCegarLoop]: Abstraction has 7386 states and 10586 transitions. [2022-11-02 21:01:14,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 9 states have call predecessors, (18), 1 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 21:01:14,318 INFO L276 IsEmpty]: Start isEmpty. Operand 7386 states and 10586 transitions. [2022-11-02 21:01:14,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-11-02 21:01:14,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:14,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 21:01:14,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 21:01:14,326 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:14,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:14,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1061652488, now seen corresponding path program 1 times [2022-11-02 21:01:14,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:14,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734571476] [2022-11-02 21:01:14,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:14,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:14,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:14,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:01:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:01:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-02 21:01:14,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:14,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:01:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-02 21:01:14,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-11-02 21:01:14,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-02 21:01:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:14,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-02 21:01:15,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:15,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-02 21:01:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-02 21:01:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:15,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-02 21:01:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-02 21:01:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-02 21:01:15,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-02 21:01:15,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:15,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734571476] [2022-11-02 21:01:15,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734571476] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:15,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:15,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:01:15,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129707589] [2022-11-02 21:01:15,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:15,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:01:15,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:15,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:01:15,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:15,125 INFO L87 Difference]: Start difference. First operand 7386 states and 10586 transitions. Second operand has 10 states, 10 states have (on average 10.9) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (18), 9 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-02 21:01:17,185 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:19,195 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:21,209 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:23,223 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:28,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:28,712 INFO L93 Difference]: Finished difference Result 18033 states and 26588 transitions. [2022-11-02 21:01:28,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-02 21:01:28,713 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (18), 9 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 155 [2022-11-02 21:01:28,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:28,757 INFO L225 Difference]: With dead ends: 18033 [2022-11-02 21:01:28,757 INFO L226 Difference]: Without dead ends: 10669 [2022-11-02 21:01:28,783 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=157, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:28,784 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 1695 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 2146 mSolverCounterSat, 917 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 2928 SdHoareTripleChecker+Invalid, 3067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 917 IncrementalHoareTripleChecker+Valid, 2146 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:28,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 2928 Invalid, 3067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [917 Valid, 2146 Invalid, 4 Unknown, 0 Unchecked, 12.3s Time] [2022-11-02 21:01:28,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10669 states. [2022-11-02 21:01:29,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10669 to 7758. [2022-11-02 21:01:29,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7758 states, 5610 states have (on average 1.3033868092691623) internal successors, (7312), 5752 states have internal predecessors, (7312), 1580 states have call successors, (1580), 440 states have call predecessors, (1580), 567 states have return successors, (2117), 1673 states have call predecessors, (2117), 1577 states have call successors, (2117) [2022-11-02 21:01:29,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7758 states to 7758 states and 11009 transitions. [2022-11-02 21:01:29,557 INFO L78 Accepts]: Start accepts. Automaton has 7758 states and 11009 transitions. Word has length 155 [2022-11-02 21:01:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:29,557 INFO L495 AbstractCegarLoop]: Abstraction has 7758 states and 11009 transitions. [2022-11-02 21:01:29,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.9) internal successors, (109), 3 states have internal predecessors, (109), 3 states have call successors, (18), 9 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-02 21:01:29,558 INFO L276 IsEmpty]: Start isEmpty. Operand 7758 states and 11009 transitions. [2022-11-02 21:01:29,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-11-02 21:01:29,564 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:29,564 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 21:01:29,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 21:01:29,565 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:29,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:29,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1321931853, now seen corresponding path program 1 times [2022-11-02 21:01:29,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:29,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821147510] [2022-11-02 21:01:29,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:29,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:29,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:01:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:01:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:01:30,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:01:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:01:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:01:30,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:01:30,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:01:30,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:01:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 21:01:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 21:01:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:30,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 21:01:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 21:01:30,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:30,350 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 21:01:30,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:30,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821147510] [2022-11-02 21:01:30,351 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821147510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:30,351 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:30,352 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 21:01:30,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091827922] [2022-11-02 21:01:30,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:30,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:01:30,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:30,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:01:30,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-02 21:01:30,354 INFO L87 Difference]: Start difference. First operand 7758 states and 11009 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:01:32,425 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:34,443 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:36,450 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:38,462 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:43,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:43,724 INFO L93 Difference]: Finished difference Result 20593 states and 30594 transitions. [2022-11-02 21:01:43,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 21:01:43,724 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 156 [2022-11-02 21:01:43,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:43,774 INFO L225 Difference]: With dead ends: 20593 [2022-11-02 21:01:43,775 INFO L226 Difference]: Without dead ends: 12857 [2022-11-02 21:01:43,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:01:43,798 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 1571 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 1943 mSolverCounterSat, 1190 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 3505 SdHoareTripleChecker+Invalid, 3137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1190 IncrementalHoareTripleChecker+Valid, 1943 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.8s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:43,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 3505 Invalid, 3137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1190 Valid, 1943 Invalid, 4 Unknown, 0 Unchecked, 11.8s Time] [2022-11-02 21:01:43,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12857 states. [2022-11-02 21:01:44,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12857 to 7852. [2022-11-02 21:01:44,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7852 states, 5650 states have (on average 1.3065486725663717) internal successors, (7382), 5792 states have internal predecessors, (7382), 1662 states have call successors, (1662), 440 states have call predecessors, (1662), 539 states have return successors, (1963), 1735 states have call predecessors, (1963), 1659 states have call successors, (1963) [2022-11-02 21:01:44,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7852 states to 7852 states and 11007 transitions. [2022-11-02 21:01:44,810 INFO L78 Accepts]: Start accepts. Automaton has 7852 states and 11007 transitions. Word has length 156 [2022-11-02 21:01:44,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:01:44,811 INFO L495 AbstractCegarLoop]: Abstraction has 7852 states and 11007 transitions. [2022-11-02 21:01:44,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:01:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 7852 states and 11007 transitions. [2022-11-02 21:01:44,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-11-02 21:01:44,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:01:44,817 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 21:01:44,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 21:01:44,817 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:01:44,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:01:44,818 INFO L85 PathProgramCache]: Analyzing trace with hash -495016397, now seen corresponding path program 1 times [2022-11-02 21:01:44,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:01:44,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401348714] [2022-11-02 21:01:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:01:44,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:01:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:01:45,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:01:45,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:01:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:01:45,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:01:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:01:45,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:01:45,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:01:45,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:01:45,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 21:01:45,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:01:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 21:01:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:01:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 21:01:45,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 21:01:45,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:01:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 21:01:45,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:01:45,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401348714] [2022-11-02 21:01:45,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401348714] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:01:45,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 21:01:45,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-02 21:01:45,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331205239] [2022-11-02 21:01:45,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:01:45,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-02 21:01:45,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:01:45,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-02 21:01:45,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-02 21:01:45,722 INFO L87 Difference]: Start difference. First operand 7852 states and 11007 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:01:47,783 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:49,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:01:51,812 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 [] [2022-11-02 21:01:58,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:01:58,978 INFO L93 Difference]: Finished difference Result 21907 states and 32678 transitions. [2022-11-02 21:01:58,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:01:58,979 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 158 [2022-11-02 21:01:58,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:01:59,040 INFO L225 Difference]: With dead ends: 21907 [2022-11-02 21:01:59,040 INFO L226 Difference]: Without dead ends: 14077 [2022-11-02 21:01:59,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:01:59,068 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1716 mSDsluCounter, 5834 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 1180 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1880 SdHoareTripleChecker+Valid, 6983 SdHoareTripleChecker+Invalid, 4811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1180 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.4s IncrementalHoareTripleChecker+Time [2022-11-02 21:01:59,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1880 Valid, 6983 Invalid, 4811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1180 Valid, 3628 Invalid, 3 Unknown, 0 Unchecked, 11.4s Time] [2022-11-02 21:01:59,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14077 states. [2022-11-02 21:02:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14077 to 7884. [2022-11-02 21:02:00,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7884 states, 5674 states have (on average 1.3052520267888614) internal successors, (7406), 5816 states have internal predecessors, (7406), 1662 states have call successors, (1662), 440 states have call predecessors, (1662), 547 states have return successors, (1971), 1743 states have call predecessors, (1971), 1659 states have call successors, (1971) [2022-11-02 21:02:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7884 states to 7884 states and 11039 transitions. [2022-11-02 21:02:00,236 INFO L78 Accepts]: Start accepts. Automaton has 7884 states and 11039 transitions. Word has length 158 [2022-11-02 21:02:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:00,236 INFO L495 AbstractCegarLoop]: Abstraction has 7884 states and 11039 transitions. [2022-11-02 21:02:00,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 5 states have internal predecessors, (101), 2 states have call successors, (17), 6 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:02:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 7884 states and 11039 transitions. [2022-11-02 21:02:00,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-02 21:02:00,243 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:00,243 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 21:02:00,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-02 21:02:00,243 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:00,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:00,244 INFO L85 PathProgramCache]: Analyzing trace with hash 632953324, now seen corresponding path program 1 times [2022-11-02 21:02:00,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:00,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098136165] [2022-11-02 21:02:00,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:00,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:00,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:00,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:02:00,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:02:00,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:02:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:02:00,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:02:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:02:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:02:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:02:00,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:02:00,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 21:02:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:00,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 21:02:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:00,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 21:02:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 21:02:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:00,916 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 21:02:00,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:00,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098136165] [2022-11-02 21:02:00,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098136165] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:02:00,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999361656] [2022-11-02 21:02:00,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:00,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:00,918 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:00,920 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:00,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 21:02:02,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:02,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 3585 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-02 21:02:02,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 21:02:02,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 21:02:02,556 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 21:02:02,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999361656] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 21:02:02,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 21:02:02,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 9 [2022-11-02 21:02:02,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423271187] [2022-11-02 21:02:02,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 21:02:02,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 21:02:02,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:02,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 21:02:02,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-02 21:02:02,559 INFO L87 Difference]: Start difference. First operand 7884 states and 11039 transitions. Second operand has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:02:04,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:06,660 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:08,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:15,840 INFO L93 Difference]: Finished difference Result 20787 states and 30676 transitions. [2022-11-02 21:02:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 21:02:15,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 159 [2022-11-02 21:02:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:15,908 INFO L225 Difference]: With dead ends: 20787 [2022-11-02 21:02:15,909 INFO L226 Difference]: Without dead ends: 12925 [2022-11-02 21:02:15,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 350 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-11-02 21:02:15,940 INFO L413 NwaCegarLoop]: 965 mSDtfsCounter, 1878 mSDsluCounter, 3547 mSDsCounter, 0 mSdLazyCounter, 2604 mSolverCounterSat, 1511 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2008 SdHoareTripleChecker+Valid, 4512 SdHoareTripleChecker+Invalid, 4118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1511 IncrementalHoareTripleChecker+Valid, 2604 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:15,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2008 Valid, 4512 Invalid, 4118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1511 Valid, 2604 Invalid, 3 Unknown, 0 Unchecked, 11.0s Time] [2022-11-02 21:02:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2022-11-02 21:02:17,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 7924. [2022-11-02 21:02:17,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7924 states, 5714 states have (on average 1.304515225761288) internal successors, (7454), 5856 states have internal predecessors, (7454), 1662 states have call successors, (1662), 440 states have call predecessors, (1662), 547 states have return successors, (1971), 1743 states have call predecessors, (1971), 1659 states have call successors, (1971) [2022-11-02 21:02:17,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 11087 transitions. [2022-11-02 21:02:17,091 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 11087 transitions. Word has length 159 [2022-11-02 21:02:17,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:17,092 INFO L495 AbstractCegarLoop]: Abstraction has 7924 states and 11087 transitions. [2022-11-02 21:02:17,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.444444444444445) internal successors, (112), 5 states have internal predecessors, (112), 2 states have call successors, (25), 6 states have call predecessors, (25), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:02:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 11087 transitions. [2022-11-02 21:02:17,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-11-02 21:02:17,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:17,101 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2022-11-02 21:02:17,141 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:17,314 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:17,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:17,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:17,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1248930348, now seen corresponding path program 1 times [2022-11-02 21:02:17,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:17,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457730957] [2022-11-02 21:02:17,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:17,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:17,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:17,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:02:17,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:17,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:02:17,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:02:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:18,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:02:18,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:02:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:02:18,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:02:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:02:18,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:02:18,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 21:02:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:18,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 21:02:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:18,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 21:02:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 21:02:18,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:18,205 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-02 21:02:18,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:18,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457730957] [2022-11-02 21:02:18,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457730957] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:02:18,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573126518] [2022-11-02 21:02:18,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:18,206 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:18,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:18,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:18,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 21:02:19,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:19,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 3590 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 21:02:19,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:19,660 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-02 21:02:19,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:19,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [573126518] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:19,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:02:19,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-11-02 21:02:19,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180378687] [2022-11-02 21:02:19,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:19,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:19,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:19,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:19,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-02 21:02:19,721 INFO L87 Difference]: Start difference. First operand 7924 states and 11087 transitions. Second operand has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:02:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:20,471 INFO L93 Difference]: Finished difference Result 17090 states and 24068 transitions. [2022-11-02 21:02:20,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:02:20,471 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 161 [2022-11-02 21:02:20,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:20,510 INFO L225 Difference]: With dead ends: 17090 [2022-11-02 21:02:20,511 INFO L226 Difference]: Without dead ends: 9188 [2022-11-02 21:02:20,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:02:20,536 INFO L413 NwaCegarLoop]: 1323 mSDtfsCounter, 160 mSDsluCounter, 6431 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 7754 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:20,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 7754 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-02 21:02:20,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9188 states. [2022-11-02 21:02:21,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9188 to 7916. [2022-11-02 21:02:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7916 states, 5706 states have (on average 1.3049421661409044) internal successors, (7446), 5848 states have internal predecessors, (7446), 1662 states have call successors, (1662), 440 states have call predecessors, (1662), 547 states have return successors, (1971), 1743 states have call predecessors, (1971), 1659 states have call successors, (1971) [2022-11-02 21:02:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7916 states to 7916 states and 11079 transitions. [2022-11-02 21:02:21,607 INFO L78 Accepts]: Start accepts. Automaton has 7916 states and 11079 transitions. Word has length 161 [2022-11-02 21:02:21,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:21,608 INFO L495 AbstractCegarLoop]: Abstraction has 7916 states and 11079 transitions. [2022-11-02 21:02:21,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.857142857142858) internal successors, (104), 6 states have internal predecessors, (104), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:02:21,609 INFO L276 IsEmpty]: Start isEmpty. Operand 7916 states and 11079 transitions. [2022-11-02 21:02:21,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-02 21:02:21,617 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:21,618 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:02:21,664 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-02 21:02:21,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-02 21:02:21,845 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:21,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:21,845 INFO L85 PathProgramCache]: Analyzing trace with hash 516289676, now seen corresponding path program 2 times [2022-11-02 21:02:21,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:21,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967236956] [2022-11-02 21:02:21,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:21,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:22,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:02:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:02:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:02:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:22,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:02:22,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:02:22,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:02:22,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:02:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:02:22,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:02:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 21:02:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 21:02:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:22,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 21:02:22,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 21:02:22,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:22,665 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 21:02:22,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:22,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967236956] [2022-11-02 21:02:22,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967236956] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:02:22,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102251909] [2022-11-02 21:02:22,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 21:02:22,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:22,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:22,669 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:22,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 21:02:42,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 21:02:42,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 21:02:42,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 3601 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 21:02:42,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-11-02 21:02:42,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:42,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102251909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:42,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:02:42,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-11-02 21:02:42,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345646124] [2022-11-02 21:02:42,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:42,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 21:02:42,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:42,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 21:02:42,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:02:42,754 INFO L87 Difference]: Start difference. First operand 7916 states and 11079 transitions. Second operand has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:02:44,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:46,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:02:46,250 INFO L93 Difference]: Finished difference Result 18440 states and 25761 transitions. [2022-11-02 21:02:46,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 21:02:46,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 165 [2022-11-02 21:02:46,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:02:46,280 INFO L225 Difference]: With dead ends: 18440 [2022-11-02 21:02:46,280 INFO L226 Difference]: Without dead ends: 10546 [2022-11-02 21:02:46,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-11-02 21:02:46,299 INFO L413 NwaCegarLoop]: 1386 mSDtfsCounter, 811 mSDsluCounter, 7925 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 65 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 9311 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:02:46,299 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 9311 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 111 Invalid, 1 Unknown, 0 Unchecked, 2.3s Time] [2022-11-02 21:02:46,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10546 states. [2022-11-02 21:02:47,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10546 to 7940. [2022-11-02 21:02:47,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7940 states, 5730 states have (on average 1.3022687609075043) internal successors, (7462), 5872 states have internal predecessors, (7462), 1662 states have call successors, (1662), 440 states have call predecessors, (1662), 547 states have return successors, (1971), 1743 states have call predecessors, (1971), 1659 states have call successors, (1971) [2022-11-02 21:02:47,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7940 states to 7940 states and 11095 transitions. [2022-11-02 21:02:47,426 INFO L78 Accepts]: Start accepts. Automaton has 7940 states and 11095 transitions. Word has length 165 [2022-11-02 21:02:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:02:47,427 INFO L495 AbstractCegarLoop]: Abstraction has 7940 states and 11095 transitions. [2022-11-02 21:02:47,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.75) internal successors, (102), 7 states have internal predecessors, (102), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-02 21:02:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 7940 states and 11095 transitions. [2022-11-02 21:02:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-11-02 21:02:47,436 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:02:47,437 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:02:47,497 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 21:02:47,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 21:02:47,653 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:02:47,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:02:47,654 INFO L85 PathProgramCache]: Analyzing trace with hash -763574002, now seen corresponding path program 1 times [2022-11-02 21:02:47,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:02:47,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997754782] [2022-11-02 21:02:47,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:47,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:02:47,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:49,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:02:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:02:49,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:02:49,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:49,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:02:49,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-02 21:02:49,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-02 21:02:49,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-02 21:02:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-11-02 21:02:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-02 21:02:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 21:02:49,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:02:49,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-02 21:02:49,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:02:49,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-02 21:02:49,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 21:02:49,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:49,578 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 21:02:49,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:02:49,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997754782] [2022-11-02 21:02:49,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997754782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:02:49,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839640866] [2022-11-02 21:02:49,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:02:49,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:02:49,580 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:02:49,581 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:02:49,588 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 21:02:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:02:51,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 3596 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 21:02:51,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:02:51,722 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-11-02 21:02:51,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:02:51,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839640866] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:02:51,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:02:51,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [9] total 14 [2022-11-02 21:02:51,723 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705002283] [2022-11-02 21:02:51,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:02:51,723 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 21:02:51,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:02:51,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 21:02:51,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-02 21:02:51,724 INFO L87 Difference]: Start difference. First operand 7940 states and 11095 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 21:02:53,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:55,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:57,822 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-02 21:02:59,831 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 [] [2022-11-02 21:03:03,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-02 21:03:03,251 INFO L93 Difference]: Finished difference Result 16247 states and 22804 transitions. [2022-11-02 21:03:03,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 21:03:03,252 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 165 [2022-11-02 21:03:03,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-02 21:03:03,282 INFO L225 Difference]: With dead ends: 16247 [2022-11-02 21:03:03,283 INFO L226 Difference]: Without dead ends: 8329 [2022-11-02 21:03:03,302 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 193 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-11-02 21:03:03,303 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 1260 mSDsluCounter, 4321 mSDsCounter, 0 mSdLazyCounter, 1622 mSolverCounterSat, 13 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1269 SdHoareTripleChecker+Valid, 5870 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 1622 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.3s IncrementalHoareTripleChecker+Time [2022-11-02 21:03:03,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1269 Valid, 5870 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 1622 Invalid, 4 Unknown, 0 Unchecked, 10.3s Time] [2022-11-02 21:03:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8329 states. [2022-11-02 21:03:04,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8329 to 7960. [2022-11-02 21:03:04,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7960 states, 5746 states have (on average 1.3014270797076226) internal successors, (7478), 5888 states have internal predecessors, (7478), 1662 states have call successors, (1662), 440 states have call predecessors, (1662), 551 states have return successors, (1979), 1747 states have call predecessors, (1979), 1659 states have call successors, (1979) [2022-11-02 21:03:04,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7960 states to 7960 states and 11119 transitions. [2022-11-02 21:03:04,288 INFO L78 Accepts]: Start accepts. Automaton has 7960 states and 11119 transitions. Word has length 165 [2022-11-02 21:03:04,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-02 21:03:04,288 INFO L495 AbstractCegarLoop]: Abstraction has 7960 states and 11119 transitions. [2022-11-02 21:03:04,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 21:03:04,288 INFO L276 IsEmpty]: Start isEmpty. Operand 7960 states and 11119 transitions. [2022-11-02 21:03:04,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-11-02 21:03:04,296 INFO L187 NwaCegarLoop]: Found error trace [2022-11-02 21:03:04,297 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2022-11-02 21:03:04,354 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 21:03:04,525 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-02 21:03:04,525 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-02 21:03:04,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 21:03:04,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1710814093, now seen corresponding path program 1 times [2022-11-02 21:03:04,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 21:03:04,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280208400] [2022-11-02 21:03:04,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:04,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 21:03:04,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:05,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:03:05,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:05,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-02 21:03:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:05,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-02 21:03:05,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-02 21:03:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:05,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:03:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-11-02 21:03:06,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:03:06,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-02 21:03:06,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-02 21:03:06,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-02 21:03:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-11-02 21:03:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-11-02 21:03:06,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-11-02 21:03:06,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-02 21:03:06,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-11-02 21:03:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-02 21:03:06,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-02 21:03:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-02 21:03:06,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:06,188 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-02 21:03:06,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 21:03:06,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280208400] [2022-11-02 21:03:06,188 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280208400] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 21:03:06,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668560215] [2022-11-02 21:03:06,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 21:03:06,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 21:03:06,189 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 21:03:06,190 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 21:03:06,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bb92ea55-c84d-4355-8080-57f88632e982/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 21:03:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 21:03:07,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 3622 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 21:03:07,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 21:03:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-11-02 21:03:07,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 21:03:07,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668560215] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 21:03:07,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 21:03:07,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 12 [2022-11-02 21:03:07,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806116321] [2022-11-02 21:03:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 21:03:07,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 21:03:07,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 21:03:07,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 21:03:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-02 21:03:07,740 INFO L87 Difference]: Start difference. First operand 7960 states and 11119 transitions. Second operand has 5 states, 5 states have (on average 21.2) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-02 21:03:09,808 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []