./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e7fbc69 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS --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 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 --- 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-4e7fbc6 [2022-11-23 01:52:24,749 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-23 01:52:24,752 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-23 01:52:24,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-23 01:52:24,801 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-23 01:52:24,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-23 01:52:24,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-23 01:52:24,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-23 01:52:24,814 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-23 01:52:24,820 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-23 01:52:24,822 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-23 01:52:24,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-23 01:52:24,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-23 01:52:24,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-23 01:52:24,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-23 01:52:24,833 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-23 01:52:24,835 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-23 01:52:24,836 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-23 01:52:24,838 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-23 01:52:24,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-23 01:52:24,847 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-23 01:52:24,850 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-23 01:52:24,852 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-23 01:52:24,853 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-23 01:52:24,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-23 01:52:24,865 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-23 01:52:24,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-23 01:52:24,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-23 01:52:24,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-23 01:52:24,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-23 01:52:24,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-23 01:52:24,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-23 01:52:24,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-23 01:52:24,875 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-23 01:52:24,876 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-23 01:52:24,877 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-23 01:52:24,877 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-23 01:52:24,878 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-23 01:52:24,878 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-23 01:52:24,880 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-23 01:52:24,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-23 01:52:24,882 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-11-23 01:52:24,922 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-23 01:52:24,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-23 01:52:24,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-23 01:52:24,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-23 01:52:24,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-23 01:52:24,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-23 01:52:24,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-23 01:52:24,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-23 01:52:24,927 INFO L138 SettingsManager]: * Use SBE=true [2022-11-23 01:52:24,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-23 01:52:24,928 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-23 01:52:24,928 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-23 01:52:24,929 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-23 01:52:24,929 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-23 01:52:24,929 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-23 01:52:24,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-23 01:52:24,930 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-23 01:52:24,930 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-23 01:52:24,930 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-23 01:52:24,931 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-23 01:52:24,931 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-23 01:52:24,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:52:24,931 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-23 01:52:24,932 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-23 01:52:24,932 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-23 01:52:24,932 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-23 01:52:24,932 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-23 01:52:24,933 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-23 01:52:24,933 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-23 01:52:24,933 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-23 01:52:24,934 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-23 01:52:24,934 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 83231938a54e9ae94bbb1bd48018cfe01091365ca5db88cfd1292dc620f78e56 [2022-11-23 01:52:25,258 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-23 01:52:25,290 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-23 01:52:25,295 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-23 01:52:25,296 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-23 01:52:25,297 INFO L275 PluginConnector]: CDTParser initialized [2022-11-23 01:52:25,298 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/../../sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-23 01:52:28,586 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-23 01:52:29,314 INFO L351 CDTParser]: Found 1 translation units. [2022-11-23 01:52:29,314 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-23 01:52:29,390 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/data/c7f9b94dd/16d2a692b610477997c746761bd2964d/FLAG174df370b [2022-11-23 01:52:29,415 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/data/c7f9b94dd/16d2a692b610477997c746761bd2964d [2022-11-23 01:52:29,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-23 01:52:29,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-23 01:52:29,424 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-23 01:52:29,424 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-23 01:52:29,430 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-23 01:52:29,431 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:29" (1/1) ... [2022-11-23 01:52:29,432 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28610815 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:29, skipping insertion in model container [2022-11-23 01:52:29,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 01:52:29" (1/1) ... [2022-11-23 01:52:29,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-23 01:52:29,633 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-23 01:52:31,753 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2022-11-23 01:52:31,880 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:52:31,965 INFO L203 MainTranslator]: Completed pre-run [2022-11-23 01:52:32,687 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/sv-benchmarks/c/ldv-challenges/linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i[419026,419039] [2022-11-23 01:52:32,706 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-23 01:52:32,819 INFO L208 MainTranslator]: Completed translation [2022-11-23 01:52:32,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32 WrapperNode [2022-11-23 01:52:32,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-23 01:52:32,822 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-23 01:52:32,822 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-23 01:52:32,822 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-23 01:52:32,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:33,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:33,440 INFO L138 Inliner]: procedures = 170, calls = 6963, calls flagged for inlining = 68, calls inlined = 55, statements flattened = 16666 [2022-11-23 01:52:33,441 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-23 01:52:33,441 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-23 01:52:33,442 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-23 01:52:33,442 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-23 01:52:33,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:33,452 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:33,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:33,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:33,943 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:34,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:34,246 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:34,293 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:34,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-23 01:52:34,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-23 01:52:34,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-23 01:52:34,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-23 01:52:34,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (1/1) ... [2022-11-23 01:52:34,467 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-23 01:52:34,494 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:52:34,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-23 01:52:34,595 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-23 01:52:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure find_dev [2022-11-23 01:52:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure find_dev [2022-11-23 01:52:34,671 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_vitclk_ctl [2022-11-23 01:52:34,671 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_vitclk_ctl [2022-11-23 01:52:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-23 01:52:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-11-23 01:52:34,672 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-11-23 01:52:34,672 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_burst [2022-11-23 01:52:34,672 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_burst [2022-11-23 01:52:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_i2c_gate_ctrl [2022-11-23 01:52:34,673 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_i2c_gate_ctrl [2022-11-23 01:52:34,673 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-23 01:52:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-23 01:52:34,674 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_srate [2022-11-23 01:52:34,686 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_srate [2022-11-23 01:52:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-23 01:52:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_per [2022-11-23 01:52:34,687 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_per [2022-11-23 01:52:34,687 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2022-11-23 01:52:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_demod_lock_of_stv090x_internal [2022-11-23 01:52:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod [2022-11-23 01:52:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod [2022-11-23 01:52:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_dvbs_track_crl [2022-11-23 01:52:34,688 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_dvbs_track_crl [2022-11-23 01:52:34,688 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-11-23 01:52:34,689 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-11-23 01:52:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_viterbi [2022-11-23 01:52:34,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_viterbi [2022-11-23 01:52:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_signal_strength [2022-11-23 01:52:34,689 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_signal_strength [2022-11-23 01:52:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-23 01:52:34,689 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-11-23 01:52:34,690 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-11-23 01:52:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_send_diseqc_msg [2022-11-23 01:52:34,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_send_diseqc_msg [2022-11-23 01:52:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-11-23 01:52:34,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-11-23 01:52:34,690 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thacq [2022-11-23 01:52:34,690 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thacq [2022-11-23 01:52:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_car_width [2022-11-23 01:52:34,691 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_car_width [2022-11-23 01:52:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_recv_slave_reply [2022-11-23 01:52:34,691 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_recv_slave_reply [2022-11-23 01:52:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-11-23 01:52:34,691 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-11-23 01:52:34,691 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-11-23 01:52:34,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-11-23 01:52:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-23 01:52:34,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~u32~0~TO~int [2022-11-23 01:52:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_init [2022-11-23 01:52:34,692 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_init [2022-11-23 01:52:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2022-11-23 01:52:34,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demod_lock_of_stv090x_internal [2022-11-23 01:52:34,692 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-11-23 01:52:34,692 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-11-23 01:52:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-23 01:52:34,693 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-11-23 01:52:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_dmdlock [2022-11-23 01:52:34,693 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_dmdlock [2022-11-23 01:52:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-23 01:52:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-23 01:52:34,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-23 01:52:34,694 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2022-11-23 01:52:34,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_tuner_lock_of_stv090x_internal [2022-11-23 01:52:34,695 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_sleep [2022-11-23 01:52:34,695 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_sleep [2022-11-23 01:52:34,695 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_reg [2022-11-23 01:52:34,695 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_reg [2022-11-23 01:52:34,696 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_signal [2022-11-23 01:52:34,696 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_signal [2022-11-23 01:52:34,696 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-11-23 01:52:34,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-11-23 01:52:34,697 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-23 01:52:34,697 INFO L130 BoogieDeclarations]: Found specification of procedure comp2 [2022-11-23 01:52:34,697 INFO L138 BoogieDeclarations]: Found implementation of procedure comp2 [2022-11-23 01:52:34,697 INFO L130 BoogieDeclarations]: Found specification of procedure remove_dev [2022-11-23 01:52:34,697 INFO L138 BoogieDeclarations]: Found implementation of procedure remove_dev [2022-11-23 01:52:34,698 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_search [2022-11-23 01:52:34,698 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_search [2022-11-23 01:52:34,698 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_write_reg [2022-11-23 01:52:34,698 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_write_reg [2022-11-23 01:52:34,698 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_frontend_algo [2022-11-23 01:52:34,699 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_frontend_algo [2022-11-23 01:52:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-23 01:52:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-23 01:52:34,699 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_status [2022-11-23 01:52:34,699 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_status [2022-11-23 01:52:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_vit_thtracq [2022-11-23 01:52:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_vit_thtracq [2022-11-23 01:52:34,700 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_chk_tmg [2022-11-23 01:52:34,700 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_chk_tmg [2022-11-23 01:52:34,701 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_read_cnr [2022-11-23 01:52:34,701 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_read_cnr [2022-11-23 01:52:34,718 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 01:52:34,719 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-11-23 01:52:34,719 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_set_srate [2022-11-23 01:52:34,720 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_set_srate [2022-11-23 01:52:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_activate_modcod_single [2022-11-23 01:52:34,720 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_activate_modcod_single [2022-11-23 01:52:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-23 01:52:34,720 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-11-23 01:52:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-11-23 01:52:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_viterbi [2022-11-23 01:52:34,721 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_viterbi [2022-11-23 01:52:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-23 01:52:34,721 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_mclk [2022-11-23 01:52:34,722 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_mclk [2022-11-23 01:52:34,722 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-23 01:52:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-23 01:52:34,723 INFO L130 BoogieDeclarations]: Found specification of procedure stv090x_get_lock_tmg [2022-11-23 01:52:34,723 INFO L138 BoogieDeclarations]: Found implementation of procedure stv090x_get_lock_tmg [2022-11-23 01:52:36,327 INFO L235 CfgBuilder]: Building ICFG [2022-11-23 01:52:36,330 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-23 01:52:51,664 INFO L276 CfgBuilder]: Performing block encoding [2022-11-23 01:52:51,709 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-23 01:52:51,709 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-23 01:52:51,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:51 BoogieIcfgContainer [2022-11-23 01:52:51,719 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-23 01:52:51,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-23 01:52:51,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-23 01:52:51,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-23 01:52:51,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 01:52:29" (1/3) ... [2022-11-23 01:52:51,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25925966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:51, skipping insertion in model container [2022-11-23 01:52:51,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 01:52:32" (2/3) ... [2022-11-23 01:52:51,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25925966 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 01:52:51, skipping insertion in model container [2022-11-23 01:52:51,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 01:52:51" (3/3) ... [2022-11-23 01:52:51,738 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.8-rc1-32_7a-drivers--media--dvb-frontends--stv090x.ko-ldv_main0_sequence_infinite_withcheck_stateful.cil.out.i [2022-11-23 01:52:51,764 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-23 01:52:51,765 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-23 01:52:52,013 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-23 01:52:52,021 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;@7469bb13, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-23 01:52:52,021 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-23 01:52:52,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 5288 states, 3945 states have (on average 1.5275031685678073) internal successors, (6026), 3957 states have internal predecessors, (6026), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) [2022-11-23 01:52:52,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-11-23 01:52:52,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:52,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:52:52,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:52,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:52,062 INFO L85 PathProgramCache]: Analyzing trace with hash -1058879928, now seen corresponding path program 1 times [2022-11-23 01:52:52,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:52,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748658998] [2022-11-23 01:52:52,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:52,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:52,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:53,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:53,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:53,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748658998] [2022-11-23 01:52:53,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748658998] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:53,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:53,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:52:53,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639045863] [2022-11-23 01:52:53,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:52:53,277 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:53,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:52:53,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:52:53,342 INFO L87 Difference]: Start difference. First operand has 5288 states, 3945 states have (on average 1.5275031685678073) internal successors, (6026), 3957 states have internal predecessors, (6026), 1293 states have call successors, (1293), 48 states have call predecessors, (1293), 48 states have return successors, (1293), 1292 states have call predecessors, (1293), 1293 states have call successors, (1293) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:54,150 INFO L93 Difference]: Finished difference Result 10634 states and 17369 transitions. [2022-11-23 01:52:54,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:52:54,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-11-23 01:52:54,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:54,267 INFO L225 Difference]: With dead ends: 10634 [2022-11-23 01:52:54,268 INFO L226 Difference]: Without dead ends: 5345 [2022-11-23 01:52:54,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:52:54,370 INFO L413 NwaCegarLoop]: 8600 mSDtfsCounter, 8332 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8332 SdHoareTripleChecker+Valid, 8953 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:54,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8332 Valid, 8953 Invalid, 8 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 01:52:54,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5345 states. [2022-11-23 01:52:56,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5345 to 5343. [2022-11-23 01:52:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5343 states, 3995 states have (on average 1.528160200250313) internal successors, (6105), 4003 states have internal predecessors, (6105), 1295 states have call successors, (1295), 53 states have call predecessors, (1295), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2022-11-23 01:52:56,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5343 states to 5343 states and 8689 transitions. [2022-11-23 01:52:56,124 INFO L78 Accepts]: Start accepts. Automaton has 5343 states and 8689 transitions. Word has length 8 [2022-11-23 01:52:56,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:56,124 INFO L495 AbstractCegarLoop]: Abstraction has 5343 states and 8689 transitions. [2022-11-23 01:52:56,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:56,125 INFO L276 IsEmpty]: Start isEmpty. Operand 5343 states and 8689 transitions. [2022-11-23 01:52:56,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-11-23 01:52:56,127 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:56,128 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:52:56,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-23 01:52:56,128 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:56,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:56,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1531959607, now seen corresponding path program 1 times [2022-11-23 01:52:56,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:56,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463842440] [2022-11-23 01:52:56,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:56,131 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:56,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:56,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463842440] [2022-11-23 01:52:56,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1463842440] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:56,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:56,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:52:56,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266590911] [2022-11-23 01:52:56,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:56,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:52:56,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:56,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:52:56,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:52:56,997 INFO L87 Difference]: Start difference. First operand 5343 states and 8689 transitions. Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:57,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:57,505 INFO L93 Difference]: Finished difference Result 5345 states and 8690 transitions. [2022-11-23 01:52:57,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:52:57,505 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-11-23 01:52:57,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:57,556 INFO L225 Difference]: With dead ends: 5345 [2022-11-23 01:52:57,556 INFO L226 Difference]: Without dead ends: 5342 [2022-11-23 01:52:57,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:52:57,566 INFO L413 NwaCegarLoop]: 8591 mSDtfsCounter, 8586 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8586 SdHoareTripleChecker+Valid, 8591 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:57,566 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8586 Valid, 8591 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 01:52:57,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5342 states. [2022-11-23 01:52:58,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5342 to 5342. [2022-11-23 01:52:58,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5342 states, 3995 states have (on average 1.527909887359199) internal successors, (6104), 4002 states have internal predecessors, (6104), 1294 states have call successors, (1294), 53 states have call predecessors, (1294), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2022-11-23 01:52:58,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5342 states to 5342 states and 8687 transitions. [2022-11-23 01:52:58,656 INFO L78 Accepts]: Start accepts. Automaton has 5342 states and 8687 transitions. Word has length 9 [2022-11-23 01:52:58,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:52:58,656 INFO L495 AbstractCegarLoop]: Abstraction has 5342 states and 8687 transitions. [2022-11-23 01:52:58,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:58,657 INFO L276 IsEmpty]: Start isEmpty. Operand 5342 states and 8687 transitions. [2022-11-23 01:52:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-23 01:52:58,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:52:58,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:52:58,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-23 01:52:58,658 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:52:58,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:52:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash 243611435, now seen corresponding path program 1 times [2022-11-23 01:52:58,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:52:58,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686408291] [2022-11-23 01:52:58,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:52:58,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:52:58,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:52:59,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:52:59,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:52:59,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686408291] [2022-11-23 01:52:59,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686408291] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:52:59,229 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:52:59,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:52:59,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966788427] [2022-11-23 01:52:59,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:52:59,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:52:59,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:52:59,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:52:59,231 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:52:59,232 INFO L87 Difference]: Start difference. First operand 5342 states and 8687 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:52:59,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:52:59,712 INFO L93 Difference]: Finished difference Result 5344 states and 8688 transitions. [2022-11-23 01:52:59,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:52:59,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-23 01:52:59,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:52:59,758 INFO L225 Difference]: With dead ends: 5344 [2022-11-23 01:52:59,758 INFO L226 Difference]: Without dead ends: 5341 [2022-11-23 01:52:59,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:52:59,776 INFO L413 NwaCegarLoop]: 8589 mSDtfsCounter, 8583 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8583 SdHoareTripleChecker+Valid, 8589 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:52:59,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8583 Valid, 8589 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 01:52:59,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5341 states. [2022-11-23 01:53:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5341 to 5341. [2022-11-23 01:53:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 3995 states have (on average 1.5276595744680852) internal successors, (6103), 4001 states have internal predecessors, (6103), 1293 states have call successors, (1293), 53 states have call predecessors, (1293), 52 states have return successors, (1289), 1288 states have call predecessors, (1289), 1289 states have call successors, (1289) [2022-11-23 01:53:00,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 8685 transitions. [2022-11-23 01:53:00,724 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 8685 transitions. Word has length 10 [2022-11-23 01:53:00,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:00,724 INFO L495 AbstractCegarLoop]: Abstraction has 5341 states and 8685 transitions. [2022-11-23 01:53:00,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 8685 transitions. [2022-11-23 01:53:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-11-23 01:53:00,726 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:00,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:53:00,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-23 01:53:00,727 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:00,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:00,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1040471366, now seen corresponding path program 1 times [2022-11-23 01:53:00,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:00,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063172036] [2022-11-23 01:53:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:00,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:00,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:01,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:53:01,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:01,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063172036] [2022-11-23 01:53:01,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063172036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:01,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:01,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-23 01:53:01,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706235006] [2022-11-23 01:53:01,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:01,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-23 01:53:01,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:01,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-23 01:53:01,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:53:01,263 INFO L87 Difference]: Start difference. First operand 5341 states and 8685 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:02,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:02,326 INFO L93 Difference]: Finished difference Result 16001 states and 26161 transitions. [2022-11-23 01:53:02,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-23 01:53:02,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-11-23 01:53:02,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:02,450 INFO L225 Difference]: With dead ends: 16001 [2022-11-23 01:53:02,450 INFO L226 Difference]: Without dead ends: 10659 [2022-11-23 01:53:02,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-23 01:53:02,521 INFO L413 NwaCegarLoop]: 9984 mSDtfsCounter, 8611 mSDsluCounter, 8611 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8611 SdHoareTripleChecker+Valid, 18595 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:02,523 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8611 Valid, 18595 Invalid, 12 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 01:53:02,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10659 states. [2022-11-23 01:53:04,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10659 to 10655. [2022-11-23 01:53:04,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10655 states, 7973 states have (on average 1.5284083782766837) internal successors, (12186), 7983 states have internal predecessors, (12186), 2579 states have call successors, (2579), 104 states have call predecessors, (2579), 102 states have return successors, (2653), 2571 states have call predecessors, (2653), 2573 states have call successors, (2653) [2022-11-23 01:53:05,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10655 states to 10655 states and 17418 transitions. [2022-11-23 01:53:05,020 INFO L78 Accepts]: Start accepts. Automaton has 10655 states and 17418 transitions. Word has length 11 [2022-11-23 01:53:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:05,020 INFO L495 AbstractCegarLoop]: Abstraction has 10655 states and 17418 transitions. [2022-11-23 01:53:05,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-23 01:53:05,021 INFO L276 IsEmpty]: Start isEmpty. Operand 10655 states and 17418 transitions. [2022-11-23 01:53:05,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-23 01:53:05,037 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:05,037 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:53:05,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-23 01:53:05,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:05,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:05,039 INFO L85 PathProgramCache]: Analyzing trace with hash 46739510, now seen corresponding path program 1 times [2022-11-23 01:53:05,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:05,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399619107] [2022-11-23 01:53:05,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:05,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:07,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:53:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:07,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-23 01:53:07,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:07,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:07,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-23 01:53:07,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:07,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:53:07,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:07,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 01:53:07,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:07,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 01:53:07,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:07,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399619107] [2022-11-23 01:53:07,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399619107] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:07,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:07,852 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:53:07,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180072259] [2022-11-23 01:53:07,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:07,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:53:07,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:07,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:53:07,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:53:07,855 INFO L87 Difference]: Start difference. First operand 10655 states and 17418 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 01:53:17,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:17,927 INFO L93 Difference]: Finished difference Result 21599 states and 35529 transitions. [2022-11-23 01:53:17,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:53:17,928 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 68 [2022-11-23 01:53:17,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:18,019 INFO L225 Difference]: With dead ends: 21599 [2022-11-23 01:53:18,019 INFO L226 Difference]: Without dead ends: 10947 [2022-11-23 01:53:18,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-11-23 01:53:18,123 INFO L413 NwaCegarLoop]: 8360 mSDtfsCounter, 648 mSDsluCounter, 30004 mSDsCounter, 0 mSdLazyCounter, 2964 mSolverCounterSat, 1368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 38364 SdHoareTripleChecker+Invalid, 4332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1368 IncrementalHoareTripleChecker+Valid, 2964 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:18,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 38364 Invalid, 4332 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1368 Valid, 2964 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-11-23 01:53:18,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10947 states. [2022-11-23 01:53:19,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10947 to 10803. [2022-11-23 01:53:20,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10803 states, 8094 states have (on average 1.5271806276254016) internal successors, (12361), 8107 states have internal predecessors, (12361), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 109 states have return successors, (2702), 2593 states have call predecessors, (2702), 2593 states have call successors, (2702) [2022-11-23 01:53:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10803 states to 10803 states and 17662 transitions. [2022-11-23 01:53:20,177 INFO L78 Accepts]: Start accepts. Automaton has 10803 states and 17662 transitions. Word has length 68 [2022-11-23 01:53:20,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:53:20,178 INFO L495 AbstractCegarLoop]: Abstraction has 10803 states and 17662 transitions. [2022-11-23 01:53:20,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (10), 4 states have call predecessors, (10), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-23 01:53:20,179 INFO L276 IsEmpty]: Start isEmpty. Operand 10803 states and 17662 transitions. [2022-11-23 01:53:20,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-23 01:53:20,188 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:53:20,188 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:53:20,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-23 01:53:20,189 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:53:20,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:53:20,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1654506248, now seen corresponding path program 1 times [2022-11-23 01:53:20,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:53:20,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828782236] [2022-11-23 01:53:20,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:53:20,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:53:20,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:53:22,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:53:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-23 01:53:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-23 01:53:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:53:22,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-23 01:53:22,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:53:22,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 01:53:22,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:53:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 01:53:22,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:53:22,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828782236] [2022-11-23 01:53:22,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828782236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:53:22,412 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:53:22,412 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-23 01:53:22,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726314679] [2022-11-23 01:53:22,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:53:22,413 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-23 01:53:22,413 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:53:22,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-23 01:53:22,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-23 01:53:22,414 INFO L87 Difference]: Start difference. First operand 10803 states and 17662 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 01:53:57,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:53:57,956 INFO L93 Difference]: Finished difference Result 27861 states and 48458 transitions. [2022-11-23 01:53:57,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-23 01:53:57,957 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 71 [2022-11-23 01:53:57,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:53:58,116 INFO L225 Difference]: With dead ends: 27861 [2022-11-23 01:53:58,117 INFO L226 Difference]: Without dead ends: 17061 [2022-11-23 01:53:58,214 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:53:58,215 INFO L413 NwaCegarLoop]: 7277 mSDtfsCounter, 6448 mSDsluCounter, 32655 mSDsCounter, 0 mSdLazyCounter, 25422 mSolverCounterSat, 3634 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8369 SdHoareTripleChecker+Valid, 39932 SdHoareTripleChecker+Invalid, 29056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 3634 IncrementalHoareTripleChecker+Valid, 25422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 33.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:53:58,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8369 Valid, 39932 Invalid, 29056 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [3634 Valid, 25422 Invalid, 0 Unknown, 0 Unchecked, 33.7s Time] [2022-11-23 01:53:58,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17061 states. [2022-11-23 01:54:04,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17061 to 10813. [2022-11-23 01:54:04,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10813 states, 8102 states have (on average 1.5266600839298938) internal successors, (12369), 8115 states have internal predecessors, (12369), 2599 states have call successors, (2599), 106 states have call predecessors, (2599), 111 states have return successors, (2742), 2595 states have call predecessors, (2742), 2593 states have call successors, (2742) [2022-11-23 01:54:04,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10813 states to 10813 states and 17710 transitions. [2022-11-23 01:54:04,202 INFO L78 Accepts]: Start accepts. Automaton has 10813 states and 17710 transitions. Word has length 71 [2022-11-23 01:54:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:54:04,205 INFO L495 AbstractCegarLoop]: Abstraction has 10813 states and 17710 transitions. [2022-11-23 01:54:04,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2022-11-23 01:54:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 10813 states and 17710 transitions. [2022-11-23 01:54:04,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-23 01:54:04,211 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:54:04,212 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:54:04,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-23 01:54:04,213 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:54:04,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:04,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1499925281, now seen corresponding path program 1 times [2022-11-23 01:54:04,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:54:04,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251714911] [2022-11-23 01:54:04,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:04,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:54:06,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:13,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:54:13,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:13,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:54:13,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:13,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:54:13,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:14,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:54:14,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:14,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 01:54:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:14,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:54:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:14,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 01:54:14,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 01:54:14,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:54:14,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251714911] [2022-11-23 01:54:14,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251714911] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:54:14,761 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:54:14,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 01:54:14,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221949117] [2022-11-23 01:54:14,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:54:14,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 01:54:14,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:54:14,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 01:54:14,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:54:14,763 INFO L87 Difference]: Start difference. First operand 10813 states and 17710 transitions. Second operand has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-23 01:54:46,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:54:46,005 INFO L93 Difference]: Finished difference Result 22440 states and 36935 transitions. [2022-11-23 01:54:46,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 01:54:46,006 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 77 [2022-11-23 01:54:46,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:54:46,083 INFO L225 Difference]: With dead ends: 22440 [2022-11-23 01:54:46,083 INFO L226 Difference]: Without dead ends: 11630 [2022-11-23 01:54:46,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-23 01:54:46,172 INFO L413 NwaCegarLoop]: 8305 mSDtfsCounter, 2054 mSDsluCounter, 27088 mSDsCounter, 0 mSdLazyCounter, 9332 mSolverCounterSat, 3145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 27.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2097 SdHoareTripleChecker+Valid, 35393 SdHoareTripleChecker+Invalid, 12477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 3145 IncrementalHoareTripleChecker+Valid, 9332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.4s IncrementalHoareTripleChecker+Time [2022-11-23 01:54:46,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2097 Valid, 35393 Invalid, 12477 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [3145 Valid, 9332 Invalid, 0 Unknown, 0 Unchecked, 29.4s Time] [2022-11-23 01:54:46,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2022-11-23 01:54:48,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 11253. [2022-11-23 01:54:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11253 states, 8416 states have (on average 1.5240019011406845) internal successors, (12826), 8462 states have internal predecessors, (12826), 2690 states have call successors, (2690), 146 states have call predecessors, (2690), 146 states have return successors, (2861), 2648 states have call predecessors, (2861), 2684 states have call successors, (2861) [2022-11-23 01:54:48,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11253 states to 11253 states and 18377 transitions. [2022-11-23 01:54:48,482 INFO L78 Accepts]: Start accepts. Automaton has 11253 states and 18377 transitions. Word has length 77 [2022-11-23 01:54:48,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:54:48,483 INFO L495 AbstractCegarLoop]: Abstraction has 11253 states and 18377 transitions. [2022-11-23 01:54:48,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.181818181818182) internal successors, (57), 9 states have internal predecessors, (57), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-23 01:54:48,483 INFO L276 IsEmpty]: Start isEmpty. Operand 11253 states and 18377 transitions. [2022-11-23 01:54:48,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-23 01:54:48,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:54:48,493 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-23 01:54:48,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-23 01:54:48,493 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:54:48,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:54:48,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1079657251, now seen corresponding path program 1 times [2022-11-23 01:54:48,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:54:48,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2122282055] [2022-11-23 01:54:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:54:48,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:54:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 01:54:49,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 01:54:49,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-23 01:54:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-23 01:54:49,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-23 01:54:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-23 01:54:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:54:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-23 01:54:49,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:54:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 01:54:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:54:49,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-23 01:54:49,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:54:49,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2122282055] [2022-11-23 01:54:49,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2122282055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:54:49,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:54:49,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-23 01:54:49,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372261620] [2022-11-23 01:54:49,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:54:49,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-23 01:54:49,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:54:49,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-23 01:54:49,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-23 01:54:49,581 INFO L87 Difference]: Start difference. First operand 11253 states and 18377 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:55:13,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:55:13,640 INFO L93 Difference]: Finished difference Result 16038 states and 26412 transitions. [2022-11-23 01:55:13,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-23 01:55:13,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 88 [2022-11-23 01:55:13,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:55:13,756 INFO L225 Difference]: With dead ends: 16038 [2022-11-23 01:55:13,756 INFO L226 Difference]: Without dead ends: 16035 [2022-11-23 01:55:13,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-23 01:55:13,770 INFO L413 NwaCegarLoop]: 6056 mSDtfsCounter, 6350 mSDsluCounter, 12273 mSDsCounter, 0 mSdLazyCounter, 12259 mSolverCounterSat, 5545 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7362 SdHoareTripleChecker+Valid, 18329 SdHoareTripleChecker+Invalid, 17804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 5545 IncrementalHoareTripleChecker+Valid, 12259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-11-23 01:55:13,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7362 Valid, 18329 Invalid, 17804 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [5545 Valid, 12259 Invalid, 0 Unknown, 0 Unchecked, 22.7s Time] [2022-11-23 01:55:13,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16035 states. [2022-11-23 01:55:16,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16035 to 11252. [2022-11-23 01:55:16,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11252 states, 8416 states have (on average 1.523764258555133) internal successors, (12824), 8461 states have internal predecessors, (12824), 2689 states have call successors, (2689), 146 states have call predecessors, (2689), 146 states have return successors, (2861), 2648 states have call predecessors, (2861), 2684 states have call successors, (2861) [2022-11-23 01:55:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11252 states to 11252 states and 18374 transitions. [2022-11-23 01:55:17,074 INFO L78 Accepts]: Start accepts. Automaton has 11252 states and 18374 transitions. Word has length 88 [2022-11-23 01:55:17,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:55:17,075 INFO L495 AbstractCegarLoop]: Abstraction has 11252 states and 18374 transitions. [2022-11-23 01:55:17,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 3 states have internal predecessors, (59), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-23 01:55:17,075 INFO L276 IsEmpty]: Start isEmpty. Operand 11252 states and 18374 transitions. [2022-11-23 01:55:17,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-23 01:55:17,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:55:17,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:55:17,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-23 01:55:17,089 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:55:17,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:55:17,089 INFO L85 PathProgramCache]: Analyzing trace with hash -2138728231, now seen corresponding path program 1 times [2022-11-23 01:55:17,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:55:17,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094966333] [2022-11-23 01:55:17,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:55:17,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:55:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:39,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:55:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:39,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:55:39,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:55:39,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:40,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:55:40,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:40,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 01:55:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-23 01:55:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:44,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-23 01:55:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:55:44,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 01:55:44,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:55:44,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094966333] [2022-11-23 01:55:44,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094966333] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:55:44,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:55:44,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-23 01:55:44,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029717012] [2022-11-23 01:55:44,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:55:44,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-23 01:55:44,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:55:44,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-23 01:55:44,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-23 01:55:44,846 INFO L87 Difference]: Start difference. First operand 11252 states and 18374 transitions. Second operand has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 01:56:01,566 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.14s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [] [2022-11-23 01:57:31,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:57:31,737 INFO L93 Difference]: Finished difference Result 24066 states and 41433 transitions. [2022-11-23 01:57:31,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-23 01:57:31,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 79 [2022-11-23 01:57:31,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:57:31,870 INFO L225 Difference]: With dead ends: 24066 [2022-11-23 01:57:31,870 INFO L226 Difference]: Without dead ends: 13229 [2022-11-23 01:57:31,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=155, Invalid=495, Unknown=0, NotChecked=0, Total=650 [2022-11-23 01:57:31,992 INFO L413 NwaCegarLoop]: 8070 mSDtfsCounter, 2498 mSDsluCounter, 38445 mSDsCounter, 0 mSdLazyCounter, 23194 mSolverCounterSat, 1851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2551 SdHoareTripleChecker+Valid, 46515 SdHoareTripleChecker+Invalid, 25045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1851 IncrementalHoareTripleChecker+Valid, 23194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 104.0s IncrementalHoareTripleChecker+Time [2022-11-23 01:57:31,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2551 Valid, 46515 Invalid, 25045 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1851 Valid, 23194 Invalid, 0 Unknown, 0 Unchecked, 104.0s Time] [2022-11-23 01:57:32,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13229 states. [2022-11-23 01:57:35,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13229 to 12338. [2022-11-23 01:57:35,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12338 states, 9257 states have (on average 1.5246840229015879) internal successors, (14114), 9347 states have internal predecessors, (14114), 2874 states have call successors, (2874), 200 states have call predecessors, (2874), 206 states have return successors, (4746), 2794 states have call predecessors, (4746), 2869 states have call successors, (4746) [2022-11-23 01:57:35,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12338 states to 12338 states and 21734 transitions. [2022-11-23 01:57:35,890 INFO L78 Accepts]: Start accepts. Automaton has 12338 states and 21734 transitions. Word has length 79 [2022-11-23 01:57:35,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:57:35,891 INFO L495 AbstractCegarLoop]: Abstraction has 12338 states and 21734 transitions. [2022-11-23 01:57:35,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.214285714285714) internal successors, (59), 12 states have internal predecessors, (59), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 01:57:35,891 INFO L276 IsEmpty]: Start isEmpty. Operand 12338 states and 21734 transitions. [2022-11-23 01:57:35,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 01:57:35,904 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:57:35,904 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:57:35,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-23 01:57:35,904 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:57:35,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:57:35,905 INFO L85 PathProgramCache]: Analyzing trace with hash 298095679, now seen corresponding path program 1 times [2022-11-23 01:57:35,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:57:35,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493978587] [2022-11-23 01:57:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:57:35,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:57:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:55,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:57:55,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:55,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:57:55,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:57:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:56,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:57:56,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:57:56,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 01:57:56,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:08,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 01:58:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:08,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:58:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:08,275 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 01:58:08,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:08,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493978587] [2022-11-23 01:58:08,276 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493978587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-23 01:58:08,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550757898] [2022-11-23 01:58:08,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:08,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:08,277 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/z3 [2022-11-23 01:58:08,283 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-23 01:58:08,287 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-23 01:58:10,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:10,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 8098 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-23 01:58:10,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-23 01:58:10,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-23 01:58:10,907 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-23 01:58:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-23 01:58:11,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550757898] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-23 01:58:11,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-23 01:58:11,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16, 5] total 20 [2022-11-23 01:58:11,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471402178] [2022-11-23 01:58:11,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:11,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 01:58:11,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:11,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 01:58:11,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-23 01:58:11,088 INFO L87 Difference]: Start difference. First operand 12338 states and 21734 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:58:12,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 01:58:12,136 INFO L93 Difference]: Finished difference Result 23216 states and 43058 transitions. [2022-11-23 01:58:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 01:58:12,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 80 [2022-11-23 01:58:12,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 01:58:12,228 INFO L225 Difference]: With dead ends: 23216 [2022-11-23 01:58:12,229 INFO L226 Difference]: Without dead ends: 11723 [2022-11-23 01:58:12,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-23 01:58:12,493 INFO L413 NwaCegarLoop]: 8584 mSDtfsCounter, 36 mSDsluCounter, 17130 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 25714 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-23 01:58:12,493 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 25714 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-23 01:58:12,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11723 states. [2022-11-23 01:58:14,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11723 to 11581. [2022-11-23 01:58:14,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11581 states, 8658 states have (on average 1.522869022869023) internal successors, (13185), 8716 states have internal predecessors, (13185), 2764 states have call successors, (2764), 161 states have call predecessors, (2764), 158 states have return successors, (2945), 2707 states have call predecessors, (2945), 2759 states have call successors, (2945) [2022-11-23 01:58:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11581 states to 11581 states and 18894 transitions. [2022-11-23 01:58:14,473 INFO L78 Accepts]: Start accepts. Automaton has 11581 states and 18894 transitions. Word has length 80 [2022-11-23 01:58:14,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 01:58:14,474 INFO L495 AbstractCegarLoop]: Abstraction has 11581 states and 18894 transitions. [2022-11-23 01:58:14,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 01:58:14,475 INFO L276 IsEmpty]: Start isEmpty. Operand 11581 states and 18894 transitions. [2022-11-23 01:58:14,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-23 01:58:14,488 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 01:58:14,488 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 01:58:14,517 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-23 01:58:14,713 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e2a5fb6b-95c3-4ec1-849b-76cc6c5e4c4e/bin/uautomizer-QkZJyEgLgS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-23 01:58:14,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 01:58:14,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 01:58:14,714 INFO L85 PathProgramCache]: Analyzing trace with hash 1976055041, now seen corresponding path program 1 times [2022-11-23 01:58:14,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 01:58:14,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261920875] [2022-11-23 01:58:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 01:58:14,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 01:58:15,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:32,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 01:58:32,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 01:58:32,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:32,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 01:58:32,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:33,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 01:58:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 01:58:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:38,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 01:58:38,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:38,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 01:58:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 01:58:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 01:58:38,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 01:58:38,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261920875] [2022-11-23 01:58:38,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261920875] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 01:58:38,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 01:58:38,999 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-23 01:58:38,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751983545] [2022-11-23 01:58:38,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 01:58:39,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-23 01:58:39,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 01:58:39,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-23 01:58:39,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2022-11-23 01:58:39,001 INFO L87 Difference]: Start difference. First operand 11581 states and 18894 transitions. Second operand has 15 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 02:00:23,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:23,201 INFO L93 Difference]: Finished difference Result 23754 states and 38914 transitions. [2022-11-23 02:00:23,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-23 02:00:23,202 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 80 [2022-11-23 02:00:23,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:23,311 INFO L225 Difference]: With dead ends: 23754 [2022-11-23 02:00:23,312 INFO L226 Difference]: Without dead ends: 12915 [2022-11-23 02:00:23,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=154, Invalid=496, Unknown=0, NotChecked=0, Total=650 [2022-11-23 02:00:23,382 INFO L413 NwaCegarLoop]: 8213 mSDtfsCounter, 2797 mSDsluCounter, 41327 mSDsCounter, 0 mSdLazyCounter, 24140 mSolverCounterSat, 1865 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2855 SdHoareTripleChecker+Valid, 49540 SdHoareTripleChecker+Invalid, 26005 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 1865 IncrementalHoareTripleChecker+Valid, 24140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:23,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2855 Valid, 49540 Invalid, 26005 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [1865 Valid, 24140 Invalid, 0 Unknown, 0 Unchecked, 101.5s Time] [2022-11-23 02:00:23,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12915 states. [2022-11-23 02:00:25,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12915 to 12136. [2022-11-23 02:00:25,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12136 states, 9082 states have (on average 1.52279233648976) internal successors, (13830), 9166 states have internal predecessors, (13830), 2860 states have call successors, (2860), 192 states have call predecessors, (2860), 193 states have return successors, (3108), 2781 states have call predecessors, (3108), 2855 states have call successors, (3108) [2022-11-23 02:00:25,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12136 states to 12136 states and 19798 transitions. [2022-11-23 02:00:25,559 INFO L78 Accepts]: Start accepts. Automaton has 12136 states and 19798 transitions. Word has length 80 [2022-11-23 02:00:25,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:00:25,560 INFO L495 AbstractCegarLoop]: Abstraction has 12136 states and 19798 transitions. [2022-11-23 02:00:25,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.0) internal successors, (60), 13 states have internal predecessors, (60), 5 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 02:00:25,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12136 states and 19798 transitions. [2022-11-23 02:00:25,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-23 02:00:25,572 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:00:25,572 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:00:25,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-23 02:00:25,573 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:25,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:25,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1583971045, now seen corresponding path program 1 times [2022-11-23 02:00:25,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:25,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402547088] [2022-11-23 02:00:25,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:25,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:27,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:00:27,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:27,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:00:27,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:00:27,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:27,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:00:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:00:27,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:27,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-11-23 02:00:27,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:27,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-23 02:00:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:27,975 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-23 02:00:27,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:27,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402547088] [2022-11-23 02:00:27,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402547088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:00:27,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:00:27,976 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-23 02:00:27,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211431743] [2022-11-23 02:00:27,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:00:27,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-23 02:00:27,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:27,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-23 02:00:27,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:00:27,978 INFO L87 Difference]: Start difference. First operand 12136 states and 19798 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:00:35,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:00:35,674 INFO L93 Difference]: Finished difference Result 23567 states and 40514 transitions. [2022-11-23 02:00:35,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-23 02:00:35,674 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2022-11-23 02:00:35,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:00:35,739 INFO L225 Difference]: With dead ends: 23567 [2022-11-23 02:00:35,739 INFO L226 Difference]: Without dead ends: 12229 [2022-11-23 02:00:35,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-23 02:00:35,854 INFO L413 NwaCegarLoop]: 8387 mSDtfsCounter, 332 mSDsluCounter, 13723 mSDsCounter, 0 mSdLazyCounter, 2133 mSolverCounterSat, 1297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 22110 SdHoareTripleChecker+Invalid, 3430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1297 IncrementalHoareTripleChecker+Valid, 2133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-11-23 02:00:35,855 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [343 Valid, 22110 Invalid, 3430 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1297 Valid, 2133 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-11-23 02:00:35,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12229 states. [2022-11-23 02:00:37,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12229 to 12140. [2022-11-23 02:00:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12140 states, 9086 states have (on average 1.5225621835791328) internal successors, (13834), 9170 states have internal predecessors, (13834), 2860 states have call successors, (2860), 192 states have call predecessors, (2860), 193 states have return successors, (3108), 2781 states have call predecessors, (3108), 2855 states have call successors, (3108) [2022-11-23 02:00:37,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12140 states to 12140 states and 19802 transitions. [2022-11-23 02:00:37,522 INFO L78 Accepts]: Start accepts. Automaton has 12140 states and 19802 transitions. Word has length 82 [2022-11-23 02:00:37,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:00:37,523 INFO L495 AbstractCegarLoop]: Abstraction has 12140 states and 19802 transitions. [2022-11-23 02:00:37,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-23 02:00:37,523 INFO L276 IsEmpty]: Start isEmpty. Operand 12140 states and 19802 transitions. [2022-11-23 02:00:37,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-23 02:00:37,533 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:00:37,533 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:00:37,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-23 02:00:37,534 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:00:37,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:00:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash -713957014, now seen corresponding path program 1 times [2022-11-23 02:00:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:00:37,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872724666] [2022-11-23 02:00:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:00:37,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:00:38,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:42,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:00:42,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:42,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:00:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:42,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:00:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:43,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:00:43,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:43,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-23 02:00:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:00:43,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 02:00:43,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:00:43,111 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:00:43,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:00:43,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872724666] [2022-11-23 02:00:43,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1872724666] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:00:43,112 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:00:43,112 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:00:43,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359477649] [2022-11-23 02:00:43,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:00:43,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:00:43,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:00:43,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:00:43,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:00:43,114 INFO L87 Difference]: Start difference. First operand 12140 states and 19802 transitions. Second operand has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 02:01:11,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:01:11,943 INFO L93 Difference]: Finished difference Result 25515 states and 41925 transitions. [2022-11-23 02:01:11,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 02:01:11,944 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 83 [2022-11-23 02:01:11,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:01:12,057 INFO L225 Difference]: With dead ends: 25515 [2022-11-23 02:01:12,057 INFO L226 Difference]: Without dead ends: 14253 [2022-11-23 02:01:12,333 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:01:12,333 INFO L413 NwaCegarLoop]: 8281 mSDtfsCounter, 1581 mSDsluCounter, 43341 mSDsCounter, 0 mSdLazyCounter, 15212 mSolverCounterSat, 1905 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1611 SdHoareTripleChecker+Valid, 51622 SdHoareTripleChecker+Invalid, 17117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 1905 IncrementalHoareTripleChecker+Valid, 15212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:01:12,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1611 Valid, 51622 Invalid, 17117 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [1905 Valid, 15212 Invalid, 0 Unknown, 0 Unchecked, 26.9s Time] [2022-11-23 02:01:12,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14253 states. [2022-11-23 02:01:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14253 to 13089. [2022-11-23 02:01:14,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13089 states, 9747 states have (on average 1.5191340925412948) internal successors, (14807), 9904 states have internal predecessors, (14807), 3079 states have call successors, (3079), 282 states have call predecessors, (3079), 262 states have return successors, (3397), 2906 states have call predecessors, (3397), 3074 states have call successors, (3397) [2022-11-23 02:01:14,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13089 states to 13089 states and 21283 transitions. [2022-11-23 02:01:14,348 INFO L78 Accepts]: Start accepts. Automaton has 13089 states and 21283 transitions. Word has length 83 [2022-11-23 02:01:14,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:01:14,348 INFO L495 AbstractCegarLoop]: Abstraction has 13089 states and 21283 transitions. [2022-11-23 02:01:14,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 10 states have internal predecessors, (63), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 02:01:14,349 INFO L276 IsEmpty]: Start isEmpty. Operand 13089 states and 21283 transitions. [2022-11-23 02:01:14,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-23 02:01:14,363 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:01:14,363 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:01:14,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-23 02:01:14,364 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:01:14,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:14,364 INFO L85 PathProgramCache]: Analyzing trace with hash -729318641, now seen corresponding path program 1 times [2022-11-23 02:01:14,365 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:14,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78999885] [2022-11-23 02:01:14,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:14,365 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:15,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-23 02:01:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:01:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:20,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:01:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:21,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:01:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:21,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-23 02:01:21,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:01:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:21,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 02:01:21,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:21,143 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:01:21,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:21,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78999885] [2022-11-23 02:01:21,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78999885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:21,143 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:01:21,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:01:21,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610271977] [2022-11-23 02:01:21,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:21,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:01:21,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:21,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:01:21,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:01:21,147 INFO L87 Difference]: Start difference. First operand 13089 states and 21283 transitions. Second operand has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-23 02:01:44,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:01:44,019 INFO L93 Difference]: Finished difference Result 25741 states and 42295 transitions. [2022-11-23 02:01:44,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-23 02:01:44,020 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) Word has length 85 [2022-11-23 02:01:44,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:01:44,114 INFO L225 Difference]: With dead ends: 25741 [2022-11-23 02:01:44,114 INFO L226 Difference]: Without dead ends: 13774 [2022-11-23 02:01:44,240 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:01:44,240 INFO L413 NwaCegarLoop]: 8306 mSDtfsCounter, 1630 mSDsluCounter, 25804 mSDsCounter, 0 mSdLazyCounter, 9102 mSolverCounterSat, 1739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 19.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1673 SdHoareTripleChecker+Valid, 34110 SdHoareTripleChecker+Invalid, 10841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1739 IncrementalHoareTripleChecker+Valid, 9102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.1s IncrementalHoareTripleChecker+Time [2022-11-23 02:01:44,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1673 Valid, 34110 Invalid, 10841 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1739 Valid, 9102 Invalid, 0 Unknown, 0 Unchecked, 21.1s Time] [2022-11-23 02:01:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13774 states. [2022-11-23 02:01:45,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13774 to 13103. [2022-11-23 02:01:45,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13103 states, 9761 states have (on average 1.518389509271591) internal successors, (14821), 9918 states have internal predecessors, (14821), 3079 states have call successors, (3079), 282 states have call predecessors, (3079), 262 states have return successors, (3397), 2906 states have call predecessors, (3397), 3074 states have call successors, (3397) [2022-11-23 02:01:46,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13103 states to 13103 states and 21297 transitions. [2022-11-23 02:01:46,022 INFO L78 Accepts]: Start accepts. Automaton has 13103 states and 21297 transitions. Word has length 85 [2022-11-23 02:01:46,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:01:46,022 INFO L495 AbstractCegarLoop]: Abstraction has 13103 states and 21297 transitions. [2022-11-23 02:01:46,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.909090909090909) internal successors, (65), 9 states have internal predecessors, (65), 5 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (7), 6 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-23 02:01:46,022 INFO L276 IsEmpty]: Start isEmpty. Operand 13103 states and 21297 transitions. [2022-11-23 02:01:46,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 02:01:46,030 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:01:46,030 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:01:46,030 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-23 02:01:46,031 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:01:46,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:01:46,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1913406724, now seen corresponding path program 1 times [2022-11-23 02:01:46,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:01:46,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349309609] [2022-11-23 02:01:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:01:46,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:01:47,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:51,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:01:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:51,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:01:51,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:51,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:01:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:51,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:01:51,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:01:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:01:52,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:52,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 02:01:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:01:52,015 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:01:52,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:01:52,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349309609] [2022-11-23 02:01:52,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349309609] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:01:52,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:01:52,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-23 02:01:52,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894525391] [2022-11-23 02:01:52,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:01:52,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-23 02:01:52,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:01:52,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-23 02:01:52,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-23 02:01:52,018 INFO L87 Difference]: Start difference. First operand 13103 states and 21297 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 02:02:18,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-23 02:02:18,786 INFO L93 Difference]: Finished difference Result 25875 states and 42433 transitions. [2022-11-23 02:02:18,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-23 02:02:18,787 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 87 [2022-11-23 02:02:18,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-23 02:02:18,879 INFO L225 Difference]: With dead ends: 25875 [2022-11-23 02:02:18,879 INFO L226 Difference]: Without dead ends: 13908 [2022-11-23 02:02:19,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=292, Unknown=0, NotChecked=0, Total=380 [2022-11-23 02:02:19,002 INFO L413 NwaCegarLoop]: 8283 mSDtfsCounter, 1631 mSDsluCounter, 38318 mSDsCounter, 0 mSdLazyCounter, 13418 mSolverCounterSat, 1903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 46601 SdHoareTripleChecker+Invalid, 15321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1903 IncrementalHoareTripleChecker+Valid, 13418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.9s IncrementalHoareTripleChecker+Time [2022-11-23 02:02:19,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 46601 Invalid, 15321 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1903 Valid, 13418 Invalid, 0 Unknown, 0 Unchecked, 24.9s Time] [2022-11-23 02:02:19,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13908 states. [2022-11-23 02:02:20,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13908 to 13129. [2022-11-23 02:02:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13129 states, 9787 states have (on average 1.5178297741902524) internal successors, (14855), 9944 states have internal predecessors, (14855), 3079 states have call successors, (3079), 282 states have call predecessors, (3079), 262 states have return successors, (3397), 2906 states have call predecessors, (3397), 3074 states have call successors, (3397) [2022-11-23 02:02:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13129 states to 13129 states and 21331 transitions. [2022-11-23 02:02:20,768 INFO L78 Accepts]: Start accepts. Automaton has 13129 states and 21331 transitions. Word has length 87 [2022-11-23 02:02:20,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-23 02:02:20,768 INFO L495 AbstractCegarLoop]: Abstraction has 13129 states and 21331 transitions. [2022-11-23 02:02:20,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 4 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-23 02:02:20,768 INFO L276 IsEmpty]: Start isEmpty. Operand 13129 states and 21331 transitions. [2022-11-23 02:02:20,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-23 02:02:20,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-23 02:02:20,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-23 02:02:20,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-23 02:02:20,781 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-23 02:02:20,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-23 02:02:20,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1489760002, now seen corresponding path program 1 times [2022-11-23 02:02:20,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-23 02:02:20,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801366988] [2022-11-23 02:02:20,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-23 02:02:20,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-23 02:02:21,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:39,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-23 02:02:39,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:39,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-11-23 02:02:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:39,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-11-23 02:02:39,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:39,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-23 02:02:39,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:39,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-23 02:02:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:57,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-11-23 02:02:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:57,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-11-23 02:02:57,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-23 02:02:57,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-23 02:02:57,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-23 02:02:57,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801366988] [2022-11-23 02:02:57,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801366988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-23 02:02:57,200 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-23 02:02:57,200 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-11-23 02:02:57,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728015369] [2022-11-23 02:02:57,200 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-23 02:02:57,200 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-23 02:02:57,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-23 02:02:57,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-23 02:02:57,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-23 02:02:57,201 INFO L87 Difference]: Start difference. First operand 13129 states and 21331 transitions. Second operand has 17 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 16 states have internal predecessors, (67), 4 states have call successors, (11), 4 states have call predecessors, (11), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7)