./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 12:09:32,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 12:09:32,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 12:09:32,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 12:09:32,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 12:09:32,856 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 12:09:32,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 12:09:32,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 12:09:32,860 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 12:09:32,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 12:09:32,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 12:09:32,866 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 12:09:32,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 12:09:32,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 12:09:32,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 12:09:32,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 12:09:32,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 12:09:32,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 12:09:32,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 12:09:32,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 12:09:32,879 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 12:09:32,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 12:09:32,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 12:09:32,881 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 12:09:32,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 12:09:32,888 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 12:09:32,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 12:09:32,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 12:09:32,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 12:09:32,889 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 12:09:32,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 12:09:32,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 12:09:32,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 12:09:32,892 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 12:09:32,892 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 12:09:32,894 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 12:09:32,894 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 12:09:32,894 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 12:09:32,895 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 12:09:32,895 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 12:09:32,895 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 12:09:32,897 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 12:09:32,897 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 12:09:32,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 12:09:32,922 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 12:09:32,922 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 12:09:32,922 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 12:09:32,923 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 12:09:32,923 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 12:09:32,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 12:09:32,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 12:09:32,923 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 12:09:32,924 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 12:09:32,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 12:09:32,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 12:09:32,925 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 12:09:32,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 12:09:32,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 12:09:32,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 12:09:32,925 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 12:09:32,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 12:09:32,926 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 12:09:32,926 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 12:09:32,926 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 12:09:32,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:09:32,927 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 12:09:32,927 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 12:09:32,927 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 12:09:32,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 12:09:32,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 12:09:32,928 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 12:09:32,928 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 12:09:32,928 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 12:09:32,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 27a3a7bacd5bfaa71ec936fdb60b09adb3a573df62752fe262468d392ed108c3 [2022-07-12 12:09:33,139 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 12:09:33,157 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 12:09:33,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 12:09:33,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 12:09:33,162 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 12:09:33,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-07-12 12:09:33,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603bdad28/1a97017c08fe47fa9e4039484e4269f4/FLAG0b5b779cc [2022-07-12 12:09:33,868 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 12:09:33,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-07-12 12:09:33,913 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603bdad28/1a97017c08fe47fa9e4039484e4269f4/FLAG0b5b779cc [2022-07-12 12:09:34,194 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/603bdad28/1a97017c08fe47fa9e4039484e4269f4 [2022-07-12 12:09:34,196 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 12:09:34,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 12:09:34,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 12:09:34,200 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 12:09:34,202 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 12:09:34,203 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:09:34" (1/1) ... [2022-07-12 12:09:34,203 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22e87e10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:34, skipping insertion in model container [2022-07-12 12:09:34,203 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 12:09:34" (1/1) ... [2022-07-12 12:09:34,209 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 12:09:34,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 12:09:35,934 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-07-12 12:09:36,022 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:09:36,050 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 12:09:36,377 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-consumption/32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i[276778,276791] [2022-07-12 12:09:36,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 12:09:36,500 INFO L208 MainTranslator]: Completed translation [2022-07-12 12:09:36,501 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36 WrapperNode [2022-07-12 12:09:36,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 12:09:36,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 12:09:36,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 12:09:36,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 12:09:36,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:36,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:37,398 INFO L137 Inliner]: procedures = 341, calls = 1845, calls flagged for inlining = 158, calls inlined = 154, statements flattened = 4927 [2022-07-12 12:09:37,399 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 12:09:37,399 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 12:09:37,400 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 12:09:37,400 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 12:09:37,406 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:37,406 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:37,659 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:37,659 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:38,289 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:38,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:38,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:38,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 12:09:38,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 12:09:38,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 12:09:38,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 12:09:38,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (1/1) ... [2022-07-12 12:09:38,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 12:09:38,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 12:09:38,986 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 12:09:38,988 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 12:09:39,027 INFO L130 BoogieDeclarations]: Found specification of procedure queue_iso [2022-07-12 12:09:39,028 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_iso [2022-07-12 12:09:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2022-07-12 12:09:39,028 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2022-07-12 12:09:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_channel [2022-07-12 12:09:39,028 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_channel [2022-07-12 12:09:39,028 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_register [2022-07-12 12:09:39,028 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_register [2022-07-12 12:09:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_establish_pp_connection [2022-07-12 12:09:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_establish_pp_connection [2022-07-12 12:09:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-12 12:09:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-12 12:09:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure strncmp [2022-07-12 12:09:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure node_req [2022-07-12 12:09:39,029 INFO L138 BoogieDeclarations]: Found implementation of procedure node_req [2022-07-12 12:09:39,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-12 12:09:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-12 12:09:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_lock [2022-07-12 12:09:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_lock [2022-07-12 12:09:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_unregister_adapter [2022-07-12 12:09:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_unregister_adapter [2022-07-12 12:09:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2022-07-12 12:09:39,030 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2022-07-12 12:09:39,030 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-12 12:09:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-12 12:09:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure cmp_read [2022-07-12 12:09:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure cmp_read [2022-07-12 12:09:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-07-12 12:09:39,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_interruptible_demux_mutex_of_firedtv [2022-07-12 12:09:39,031 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-12 12:09:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-12 12:09:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-12 12:09:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-12 12:09:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure pad_operands [2022-07-12 12:09:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure pad_operands [2022-07-12 12:09:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_set_pids [2022-07-12 12:09:39,032 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_set_pids [2022-07-12 12:09:39,032 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_ca_io_poll [2022-07-12 12:09:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_ca_io_poll [2022-07-12 12:09:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmx_release [2022-07-12 12:09:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmx_release [2022-07-12 12:09:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_release [2022-07-12 12:09:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_release [2022-07-12 12:09:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure clear_operands [2022-07-12 12:09:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_operands [2022-07-12 12:09:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-12 12:09:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-12 12:09:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_generic_open [2022-07-12 12:09:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_generic_open [2022-07-12 12:09:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 12:09:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure input_event [2022-07-12 12:09:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure input_event [2022-07-12 12:09:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure avc_write [2022-07-12 12:09:39,034 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_write [2022-07-12 12:09:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure get_opcr [2022-07-12 12:09:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure get_opcr [2022-07-12 12:09:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 12:09:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_interruptible [2022-07-12 12:09:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock_interruptible [2022-07-12 12:09:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure collect_channels [2022-07-12 12:09:39,035 INFO L138 BoogieDeclarations]: Found implementation of procedure collect_channels [2022-07-12 12:09:39,035 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 12:09:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 12:09:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_context_destroy [2022-07-12 12:09:39,036 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_context_destroy [2022-07-12 12:09:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_unregister_rc [2022-07-12 12:09:39,036 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_unregister_rc [2022-07-12 12:09:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure avc_tuner_status [2022-07-12 12:09:39,036 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_tuner_status [2022-07-12 12:09:39,036 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2022-07-12 12:09:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2022-07-12 12:09:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2022-07-12 12:09:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __mutex_init [2022-07-12 12:09:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-12 12:09:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-12 12:09:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2022-07-12 12:09:39,037 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2022-07-12 12:09:39,037 INFO L130 BoogieDeclarations]: Found specification of procedure input_report_key [2022-07-12 12:09:39,038 INFO L138 BoogieDeclarations]: Found implementation of procedure input_report_key [2022-07-12 12:09:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-07-12 12:09:39,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_avc_mutex_of_firedtv [2022-07-12 12:09:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-12 12:09:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure dev_get_drvdata [2022-07-12 12:09:39,038 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_get_drvdata [2022-07-12 12:09:39,038 INFO L130 BoogieDeclarations]: Found specification of procedure node_remove [2022-07-12 12:09:39,038 INFO L138 BoogieDeclarations]: Found implementation of procedure node_remove [2022-07-12 12:09:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-12 12:09:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure fdtv_dvb_unregister [2022-07-12 12:09:39,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fdtv_dvb_unregister [2022-07-12 12:09:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure add_pid_filter [2022-07-12 12:09:39,039 INFO L138 BoogieDeclarations]: Found implementation of procedure add_pid_filter [2022-07-12 12:09:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 12:09:39,039 INFO L130 BoogieDeclarations]: Found specification of procedure is_register_rc [2022-07-12 12:09:39,039 INFO L138 BoogieDeclarations]: Found implementation of procedure is_register_rc [2022-07-12 12:09:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure dealloc_channel [2022-07-12 12:09:39,040 INFO L138 BoogieDeclarations]: Found implementation of procedure dealloc_channel [2022-07-12 12:09:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-12 12:09:39,040 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-12 12:09:39,040 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-12 12:09:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-12 12:09:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure print_hex_dump [2022-07-12 12:09:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure print_hex_dump [2022-07-12 12:09:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 12:09:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-07-12 12:09:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_avc_mutex_of_firedtv [2022-07-12 12:09:39,041 INFO L130 BoogieDeclarations]: Found specification of procedure debug_fcp [2022-07-12 12:09:39,041 INFO L138 BoogieDeclarations]: Found implementation of procedure debug_fcp [2022-07-12 12:09:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure input_sync [2022-07-12 12:09:39,042 INFO L138 BoogieDeclarations]: Found implementation of procedure input_sync [2022-07-12 12:09:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irq [2022-07-12 12:09:39,042 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irq [2022-07-12 12:09:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-12 12:09:39,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-12 12:09:39,042 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_net_release [2022-07-12 12:09:39,042 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_net_release [2022-07-12 12:09:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 12:09:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 12:09:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 12:09:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-12 12:09:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure set_opcr [2022-07-12 12:09:39,043 INFO L138 BoogieDeclarations]: Found implementation of procedure set_opcr [2022-07-12 12:09:39,043 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_irq [2022-07-12 12:09:39,043 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_irq [2022-07-12 12:09:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-12 12:09:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-12 12:09:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure fw_iso_buffer_destroy [2022-07-12 12:09:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_iso_buffer_destroy [2022-07-12 12:09:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure node_probe [2022-07-12 12:09:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure node_probe [2022-07-12 12:09:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure get_ca_object_pos [2022-07-12 12:09:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure get_ca_object_pos [2022-07-12 12:09:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure node_update [2022-07-12 12:09:39,045 INFO L138 BoogieDeclarations]: Found implementation of procedure node_update [2022-07-12 12:09:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure avc_register_remote_control [2022-07-12 12:09:39,045 INFO L138 BoogieDeclarations]: Found implementation of procedure avc_register_remote_control [2022-07-12 12:09:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_dmxdev_release [2022-07-12 12:09:39,045 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_dmxdev_release [2022-07-12 12:09:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 12:09:39,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-12 12:09:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure device_of [2022-07-12 12:09:39,046 INFO L138 BoogieDeclarations]: Found implementation of procedure device_of [2022-07-12 12:09:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-07-12 12:09:39,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_demux_mutex_of_firedtv [2022-07-12 12:09:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure fw_core_remove_address_handler [2022-07-12 12:09:39,046 INFO L138 BoogieDeclarations]: Found implementation of procedure fw_core_remove_address_handler [2022-07-12 12:09:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 12:09:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 12:09:39,046 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 12:09:39,679 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 12:09:39,681 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 12:10:01,819 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 12:10:01,834 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 12:10:01,834 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 12:10:01,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:10:01 BoogieIcfgContainer [2022-07-12 12:10:01,837 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 12:10:01,839 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 12:10:01,839 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 12:10:01,842 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 12:10:01,842 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 12:09:34" (1/3) ... [2022-07-12 12:10:01,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f90a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:10:01, skipping insertion in model container [2022-07-12 12:10:01,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 12:09:36" (2/3) ... [2022-07-12 12:10:01,843 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16f90a5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 12:10:01, skipping insertion in model container [2022-07-12 12:10:01,843 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 12:10:01" (3/3) ... [2022-07-12 12:10:01,844 INFO L111 eAbstractionObserver]: Analyzing ICFG 32_7a_cilled_linux-3.8-rc1-drivers--media--firewire--firedtv.ko-main.cil.out.i [2022-07-12 12:10:01,854 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 12:10:01,857 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 12:10:01,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 12:10:01,931 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@65654375, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1f23413d [2022-07-12 12:10:01,932 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 12:10:01,940 INFO L276 IsEmpty]: Start isEmpty. Operand has 1351 states, 1041 states have (on average 1.3996157540826129) internal successors, (1457), 1064 states have internal predecessors, (1457), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) [2022-07-12 12:10:01,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-12 12:10:01,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:10:01,951 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:10:01,951 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:10:01,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:10:01,957 INFO L85 PathProgramCache]: Analyzing trace with hash 959882994, now seen corresponding path program 1 times [2022-07-12 12:10:01,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:10:01,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117631282] [2022-07-12 12:10:01,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:10:01,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:10:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:02,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:10:02,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:10:02,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117631282] [2022-07-12 12:10:02,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117631282] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:10:02,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:10:02,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:10:02,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429669596] [2022-07-12 12:10:02,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:10:02,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:10:02,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:10:02,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:10:02,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:10:02,430 INFO L87 Difference]: Start difference. First operand has 1351 states, 1041 states have (on average 1.3996157540826129) internal successors, (1457), 1064 states have internal predecessors, (1457), 243 states have call successors, (243), 65 states have call predecessors, (243), 65 states have return successors, (243), 243 states have call predecessors, (243), 243 states have call successors, (243) Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:02,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:10:02,729 INFO L93 Difference]: Finished difference Result 3865 states and 5697 transitions. [2022-07-12 12:10:02,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:10:02,731 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-07-12 12:10:02,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:10:02,755 INFO L225 Difference]: With dead ends: 3865 [2022-07-12 12:10:02,756 INFO L226 Difference]: Without dead ends: 2507 [2022-07-12 12:10:02,770 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 [2022-07-12 12:10:02,773 INFO L413 NwaCegarLoop]: 2214 mSDtfsCounter, 1636 mSDsluCounter, 1908 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1636 SdHoareTripleChecker+Valid, 4122 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:10:02,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1636 Valid, 4122 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 12:10:02,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2507 states. [2022-07-12 12:10:02,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2507 to 2489. [2022-07-12 12:10:02,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2489 states, 1930 states have (on average 1.3854922279792745) internal successors, (2674), 1965 states have internal predecessors, (2674), 430 states have call successors, (430), 129 states have call predecessors, (430), 128 states have return successors, (421), 420 states have call predecessors, (421), 421 states have call successors, (421) [2022-07-12 12:10:02,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2489 states to 2489 states and 3525 transitions. [2022-07-12 12:10:02,944 INFO L78 Accepts]: Start accepts. Automaton has 2489 states and 3525 transitions. Word has length 17 [2022-07-12 12:10:02,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:10:02,945 INFO L495 AbstractCegarLoop]: Abstraction has 2489 states and 3525 transitions. [2022-07-12 12:10:02,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:02,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2489 states and 3525 transitions. [2022-07-12 12:10:02,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-12 12:10:02,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:10:02,950 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:10:02,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 12:10:02,951 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:10:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:10:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1129769963, now seen corresponding path program 1 times [2022-07-12 12:10:02,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:10:02,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819339459] [2022-07-12 12:10:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:10:02,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:10:03,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:03,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:10:03,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:10:03,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819339459] [2022-07-12 12:10:03,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819339459] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:10:03,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:10:03,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:10:03,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907001758] [2022-07-12 12:10:03,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:10:03,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:10:03,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:10:03,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:10:03,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:10:03,250 INFO L87 Difference]: Start difference. First operand 2489 states and 3525 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:03,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:10:03,334 INFO L93 Difference]: Finished difference Result 2658 states and 3749 transitions. [2022-07-12 12:10:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:10:03,335 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-07-12 12:10:03,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:10:03,348 INFO L225 Difference]: With dead ends: 2658 [2022-07-12 12:10:03,348 INFO L226 Difference]: Without dead ends: 2654 [2022-07-12 12:10:03,352 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 [2022-07-12 12:10:03,353 INFO L413 NwaCegarLoop]: 1915 mSDtfsCounter, 1290 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1290 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:10:03,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1290 Valid, 2627 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:10:03,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2654 states. [2022-07-12 12:10:03,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2654 to 2652. [2022-07-12 12:10:03,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2652 states, 2078 states have (on average 1.388354186717998) internal successors, (2885), 2113 states have internal predecessors, (2885), 432 states have call successors, (432), 142 states have call predecessors, (432), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2022-07-12 12:10:03,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3742 transitions. [2022-07-12 12:10:03,437 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3742 transitions. Word has length 19 [2022-07-12 12:10:03,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:10:03,437 INFO L495 AbstractCegarLoop]: Abstraction has 2652 states and 3742 transitions. [2022-07-12 12:10:03,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:03,441 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3742 transitions. [2022-07-12 12:10:03,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-12 12:10:03,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:10:03,443 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:10:03,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 12:10:03,443 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:10:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:10:03,444 INFO L85 PathProgramCache]: Analyzing trace with hash 662648824, now seen corresponding path program 1 times [2022-07-12 12:10:03,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:10:03,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689315397] [2022-07-12 12:10:03,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:10:03,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:10:03,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:03,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:10:03,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:10:03,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689315397] [2022-07-12 12:10:03,564 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689315397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:10:03,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:10:03,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:10:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996161547] [2022-07-12 12:10:03,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:10:03,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:10:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:10:03,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:10:03,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:10:03,566 INFO L87 Difference]: Start difference. First operand 2652 states and 3742 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:10:03,634 INFO L93 Difference]: Finished difference Result 2654 states and 3743 transitions. [2022-07-12 12:10:03,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:10:03,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-12 12:10:03,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:10:03,645 INFO L225 Difference]: With dead ends: 2654 [2022-07-12 12:10:03,645 INFO L226 Difference]: Without dead ends: 2651 [2022-07-12 12:10:03,649 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 [2022-07-12 12:10:03,653 INFO L413 NwaCegarLoop]: 1904 mSDtfsCounter, 1888 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1888 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:10:03,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1888 Valid, 1904 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:10:03,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2022-07-12 12:10:03,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2651. [2022-07-12 12:10:03,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2651 states, 2078 states have (on average 1.3878729547641964) internal successors, (2884), 2112 states have internal predecessors, (2884), 431 states have call successors, (431), 142 states have call predecessors, (431), 141 states have return successors, (425), 424 states have call predecessors, (425), 425 states have call successors, (425) [2022-07-12 12:10:03,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2651 states to 2651 states and 3740 transitions. [2022-07-12 12:10:03,729 INFO L78 Accepts]: Start accepts. Automaton has 2651 states and 3740 transitions. Word has length 20 [2022-07-12 12:10:03,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:10:03,730 INFO L495 AbstractCegarLoop]: Abstraction has 2651 states and 3740 transitions. [2022-07-12 12:10:03,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:03,730 INFO L276 IsEmpty]: Start isEmpty. Operand 2651 states and 3740 transitions. [2022-07-12 12:10:03,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-12 12:10:03,731 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:10:03,731 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:10:03,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 12:10:03,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:10:03,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:10:03,732 INFO L85 PathProgramCache]: Analyzing trace with hash -933199730, now seen corresponding path program 1 times [2022-07-12 12:10:03,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:10:03,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684659993] [2022-07-12 12:10:03,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:10:03,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:10:03,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:03,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:10:03,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:10:03,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684659993] [2022-07-12 12:10:03,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684659993] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:10:03,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:10:03,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:10:03,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780138796] [2022-07-12 12:10:03,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:10:03,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:10:03,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:10:03,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:10:03,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:10:03,849 INFO L87 Difference]: Start difference. First operand 2651 states and 3740 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:04,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:10:04,001 INFO L93 Difference]: Finished difference Result 7923 states and 11257 transitions. [2022-07-12 12:10:04,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:10:04,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-12 12:10:04,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:10:04,025 INFO L225 Difference]: With dead ends: 7923 [2022-07-12 12:10:04,026 INFO L226 Difference]: Without dead ends: 5275 [2022-07-12 12:10:04,038 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 [2022-07-12 12:10:04,038 INFO L413 NwaCegarLoop]: 2170 mSDtfsCounter, 1890 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 4058 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:10:04,039 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1890 Valid, 4058 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:10:04,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5275 states. [2022-07-12 12:10:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5275 to 5263. [2022-07-12 12:10:04,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5263 states, 4132 states have (on average 1.388189738625363) internal successors, (5736), 4199 states have internal predecessors, (5736), 850 states have call successors, (850), 282 states have call predecessors, (850), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2022-07-12 12:10:04,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5263 states to 5263 states and 7468 transitions. [2022-07-12 12:10:04,178 INFO L78 Accepts]: Start accepts. Automaton has 5263 states and 7468 transitions. Word has length 21 [2022-07-12 12:10:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:10:04,179 INFO L495 AbstractCegarLoop]: Abstraction has 5263 states and 7468 transitions. [2022-07-12 12:10:04,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:04,179 INFO L276 IsEmpty]: Start isEmpty. Operand 5263 states and 7468 transitions. [2022-07-12 12:10:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-12 12:10:04,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:10:04,180 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:10:04,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 12:10:04,181 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:10:04,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:10:04,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1135107515, now seen corresponding path program 1 times [2022-07-12 12:10:04,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:10:04,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958884285] [2022-07-12 12:10:04,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:10:04,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:10:04,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:04,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:10:04,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:10:04,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958884285] [2022-07-12 12:10:04,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958884285] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:10:04,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:10:04,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:10:04,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423668506] [2022-07-12 12:10:04,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:10:04,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:10:04,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:10:04,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:10:04,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:10:04,277 INFO L87 Difference]: Start difference. First operand 5263 states and 7468 transitions. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:04,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:10:04,367 INFO L93 Difference]: Finished difference Result 5265 states and 7469 transitions. [2022-07-12 12:10:04,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:10:04,367 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-07-12 12:10:04,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:10:04,388 INFO L225 Difference]: With dead ends: 5265 [2022-07-12 12:10:04,388 INFO L226 Difference]: Without dead ends: 5262 [2022-07-12 12:10:04,393 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 [2022-07-12 12:10:04,393 INFO L413 NwaCegarLoop]: 1902 mSDtfsCounter, 1884 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1884 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:10:04,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1884 Valid, 1902 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:10:04,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5262 states. [2022-07-12 12:10:04,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5262 to 5262. [2022-07-12 12:10:04,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5262 states, 4132 states have (on average 1.387947725072604) internal successors, (5735), 4198 states have internal predecessors, (5735), 849 states have call successors, (849), 282 states have call predecessors, (849), 280 states have return successors, (882), 837 states have call predecessors, (882), 842 states have call successors, (882) [2022-07-12 12:10:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5262 states to 5262 states and 7466 transitions. [2022-07-12 12:10:04,527 INFO L78 Accepts]: Start accepts. Automaton has 5262 states and 7466 transitions. Word has length 22 [2022-07-12 12:10:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:10:04,527 INFO L495 AbstractCegarLoop]: Abstraction has 5262 states and 7466 transitions. [2022-07-12 12:10:04,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:04,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5262 states and 7466 transitions. [2022-07-12 12:10:04,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-12 12:10:04,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:10:04,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:10:04,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 12:10:04,529 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:10:04,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:10:04,529 INFO L85 PathProgramCache]: Analyzing trace with hash 828127537, now seen corresponding path program 1 times [2022-07-12 12:10:04,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:10:04,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481446072] [2022-07-12 12:10:04,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:10:04,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:10:04,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:04,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:10:04,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:10:04,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481446072] [2022-07-12 12:10:04,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481446072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:10:04,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:10:04,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 12:10:04,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017838635] [2022-07-12 12:10:04,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:10:04,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 12:10:04,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:10:04,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 12:10:04,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 12:10:04,604 INFO L87 Difference]: Start difference. First operand 5262 states and 7466 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:04,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:10:04,692 INFO L93 Difference]: Finished difference Result 5264 states and 7467 transitions. [2022-07-12 12:10:04,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 12:10:04,694 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-07-12 12:10:04,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:10:04,713 INFO L225 Difference]: With dead ends: 5264 [2022-07-12 12:10:04,713 INFO L226 Difference]: Without dead ends: 5250 [2022-07-12 12:10:04,717 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 [2022-07-12 12:10:04,717 INFO L413 NwaCegarLoop]: 1901 mSDtfsCounter, 1881 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:10:04,718 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 1901 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 12:10:04,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5250 states. [2022-07-12 12:10:04,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5250 to 5250. [2022-07-12 12:10:04,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5250 states, 4123 states have (on average 1.3875818578704826) internal successors, (5721), 4187 states have internal predecessors, (5721), 846 states have call successors, (846), 282 states have call predecessors, (846), 280 states have return successors, (880), 836 states have call predecessors, (880), 840 states have call successors, (880) [2022-07-12 12:10:04,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5250 states to 5250 states and 7447 transitions. [2022-07-12 12:10:04,865 INFO L78 Accepts]: Start accepts. Automaton has 5250 states and 7447 transitions. Word has length 23 [2022-07-12 12:10:04,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:10:04,866 INFO L495 AbstractCegarLoop]: Abstraction has 5250 states and 7447 transitions. [2022-07-12 12:10:04,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 12:10:04,866 INFO L276 IsEmpty]: Start isEmpty. Operand 5250 states and 7447 transitions. [2022-07-12 12:10:04,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-07-12 12:10:04,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:10:04,869 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:10:04,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 12:10:04,869 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:10:04,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:10:04,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1010052590, now seen corresponding path program 1 times [2022-07-12 12:10:04,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:10:04,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666503556] [2022-07-12 12:10:04,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:10:04,870 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:10:04,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:04,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 12:10:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:04,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 12:10:04,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:05,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 12:10:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 12:10:05,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:10:05,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666503556] [2022-07-12 12:10:05,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666503556] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:10:05,013 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:10:05,013 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:10:05,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267808050] [2022-07-12 12:10:05,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:10:05,014 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:10:05,014 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:10:05,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:10:05,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:10:05,015 INFO L87 Difference]: Start difference. First operand 5250 states and 7447 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:10:08,364 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:11,848 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:13,993 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:16,588 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:19,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:10:19,648 INFO L93 Difference]: Finished difference Result 11352 states and 16280 transitions. [2022-07-12 12:10:19,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:10:19,649 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 48 [2022-07-12 12:10:19,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:10:19,698 INFO L225 Difference]: With dead ends: 11352 [2022-07-12 12:10:19,699 INFO L226 Difference]: Without dead ends: 6105 [2022-07-12 12:10:19,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:10:19,722 INFO L413 NwaCegarLoop]: 1731 mSDtfsCounter, 2757 mSDsluCounter, 2776 mSDsCounter, 0 mSdLazyCounter, 1768 mSolverCounterSat, 971 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 4507 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 971 IncrementalHoareTripleChecker+Valid, 1768 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.3s IncrementalHoareTripleChecker+Time [2022-07-12 12:10:19,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 4507 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [971 Valid, 1768 Invalid, 3 Unknown, 0 Unchecked, 14.3s Time] [2022-07-12 12:10:19,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6105 states. [2022-07-12 12:10:19,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6105 to 5260. [2022-07-12 12:10:19,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5260 states, 4131 states have (on average 1.3863471314451707) internal successors, (5727), 4199 states have internal predecessors, (5727), 840 states have call successors, (840), 282 states have call predecessors, (840), 288 states have return successors, (886), 830 states have call predecessors, (886), 834 states have call successors, (886) [2022-07-12 12:10:19,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5260 states to 5260 states and 7453 transitions. [2022-07-12 12:10:19,902 INFO L78 Accepts]: Start accepts. Automaton has 5260 states and 7453 transitions. Word has length 48 [2022-07-12 12:10:19,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:10:19,904 INFO L495 AbstractCegarLoop]: Abstraction has 5260 states and 7453 transitions. [2022-07-12 12:10:19,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 1 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-12 12:10:19,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5260 states and 7453 transitions. [2022-07-12 12:10:19,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-07-12 12:10:19,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:10:19,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:10:19,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 12:10:19,909 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:10:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:10:19,909 INFO L85 PathProgramCache]: Analyzing trace with hash -2012148756, now seen corresponding path program 1 times [2022-07-12 12:10:19,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:10:19,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210698146] [2022-07-12 12:10:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:10:19,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:10:19,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:20,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:10:20,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:20,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 12:10:20,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:20,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 12:10:20,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:20,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 12:10:20,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 12:10:20,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:10:20,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210698146] [2022-07-12 12:10:20,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210698146] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:10:20,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:10:20,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:10:20,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583522100] [2022-07-12 12:10:20,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:10:20,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:10:20,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:10:20,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:10:20,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:10:20,127 INFO L87 Difference]: Start difference. First operand 5260 states and 7453 transitions. Second operand has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 12:10:23,938 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:25,987 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:29,095 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:33,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:35,626 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:37,646 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:43,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:10:43,595 INFO L93 Difference]: Finished difference Result 11876 states and 17228 transitions. [2022-07-12 12:10:43,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:10:43,596 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-07-12 12:10:43,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:10:43,618 INFO L225 Difference]: With dead ends: 11876 [2022-07-12 12:10:43,619 INFO L226 Difference]: Without dead ends: 6619 [2022-07-12 12:10:43,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-07-12 12:10:43,635 INFO L413 NwaCegarLoop]: 1667 mSDtfsCounter, 3061 mSDsluCounter, 4629 mSDsCounter, 0 mSdLazyCounter, 3035 mSolverCounterSat, 1165 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3165 SdHoareTripleChecker+Valid, 6296 SdHoareTripleChecker+Invalid, 4205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1165 IncrementalHoareTripleChecker+Valid, 3035 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:10:43,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3165 Valid, 6296 Invalid, 4205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1165 Valid, 3035 Invalid, 5 Unknown, 0 Unchecked, 23.1s Time] [2022-07-12 12:10:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6619 states. [2022-07-12 12:10:43,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6619 to 4942. [2022-07-12 12:10:43,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 3897 states have (on average 1.3869643315370799) internal successors, (5405), 3965 states have internal predecessors, (5405), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2022-07-12 12:10:43,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 6967 transitions. [2022-07-12 12:10:43,790 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 6967 transitions. Word has length 61 [2022-07-12 12:10:43,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:10:43,791 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 6967 transitions. [2022-07-12 12:10:43,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.875) internal successors, (47), 5 states have internal predecessors, (47), 1 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 12:10:43,791 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 6967 transitions. [2022-07-12 12:10:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 12:10:43,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:10:43,795 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:10:43,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 12:10:43,795 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:10:43,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:10:43,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1650073521, now seen corresponding path program 1 times [2022-07-12 12:10:43,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:10:43,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427571216] [2022-07-12 12:10:43,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:10:43,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:10:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:43,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:10:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:43,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:10:43,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:43,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:10:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:43,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 12:10:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:10:43,991 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 12:10:43,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:10:43,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427571216] [2022-07-12 12:10:43,992 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427571216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:10:43,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:10:43,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:10:43,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026286449] [2022-07-12 12:10:43,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:10:43,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:10:43,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:10:43,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:10:43,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:10:43,994 INFO L87 Difference]: Start difference. First operand 4942 states and 6967 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 12:10:47,528 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:51,854 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:10:53,496 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:00,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:11:00,201 INFO L93 Difference]: Finished difference Result 11128 states and 16176 transitions. [2022-07-12 12:11:00,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:11:00,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2022-07-12 12:11:00,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:11:00,226 INFO L225 Difference]: With dead ends: 11128 [2022-07-12 12:11:00,226 INFO L226 Difference]: Without dead ends: 6189 [2022-07-12 12:11:00,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:11:00,246 INFO L413 NwaCegarLoop]: 1475 mSDtfsCounter, 1378 mSDsluCounter, 2904 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 685 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1450 SdHoareTripleChecker+Valid, 4379 SdHoareTripleChecker+Invalid, 2880 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 685 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:11:00,247 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1450 Valid, 4379 Invalid, 2880 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [685 Valid, 2193 Invalid, 2 Unknown, 0 Unchecked, 15.9s Time] [2022-07-12 12:11:00,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6189 states. [2022-07-12 12:11:00,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6189 to 4946. [2022-07-12 12:11:00,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4946 states, 3901 states have (on average 1.3865675467828762) internal successors, (5409), 3969 states have internal predecessors, (5409), 758 states have call successors, (758), 280 states have call predecessors, (758), 286 states have return successors, (804), 748 states have call predecessors, (804), 752 states have call successors, (804) [2022-07-12 12:11:00,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4946 states to 4946 states and 6971 transitions. [2022-07-12 12:11:00,397 INFO L78 Accepts]: Start accepts. Automaton has 4946 states and 6971 transitions. Word has length 65 [2022-07-12 12:11:00,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:11:00,398 INFO L495 AbstractCegarLoop]: Abstraction has 4946 states and 6971 transitions. [2022-07-12 12:11:00,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-07-12 12:11:00,399 INFO L276 IsEmpty]: Start isEmpty. Operand 4946 states and 6971 transitions. [2022-07-12 12:11:00,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-12 12:11:00,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:11:00,402 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:11:00,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 12:11:00,403 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:11:00,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:11:00,404 INFO L85 PathProgramCache]: Analyzing trace with hash 767739636, now seen corresponding path program 1 times [2022-07-12 12:11:00,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:11:00,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445409447] [2022-07-12 12:11:00,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:11:00,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:11:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:00,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-12 12:11:00,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:00,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 12:11:00,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:00,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 12:11:00,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 12:11:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:00,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 12:11:00,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:11:00,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:11:00,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445409447] [2022-07-12 12:11:00,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445409447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:11:00,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:11:00,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:11:00,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967586554] [2022-07-12 12:11:00,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:11:00,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:11:00,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:11:00,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:11:00,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:11:00,570 INFO L87 Difference]: Start difference. First operand 4946 states and 6971 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 12:11:03,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:05,811 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:07,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:09,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:11:09,908 INFO L93 Difference]: Finished difference Result 11568 states and 16389 transitions. [2022-07-12 12:11:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:11:09,923 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 76 [2022-07-12 12:11:09,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:11:09,961 INFO L225 Difference]: With dead ends: 11568 [2022-07-12 12:11:09,975 INFO L226 Difference]: Without dead ends: 6625 [2022-07-12 12:11:09,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:11:09,992 INFO L413 NwaCegarLoop]: 1641 mSDtfsCounter, 2382 mSDsluCounter, 1754 mSDsCounter, 0 mSdLazyCounter, 1533 mSolverCounterSat, 698 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2517 SdHoareTripleChecker+Valid, 3395 SdHoareTripleChecker+Invalid, 2234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 698 IncrementalHoareTripleChecker+Valid, 1533 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:11:09,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2517 Valid, 3395 Invalid, 2234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [698 Valid, 1533 Invalid, 3 Unknown, 0 Unchecked, 9.1s Time] [2022-07-12 12:11:10,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6625 states. [2022-07-12 12:11:10,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6625 to 6282. [2022-07-12 12:11:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6282 states, 5009 states have (on average 1.3976841684967058) internal successors, (7001), 5093 states have internal predecessors, (7001), 902 states have call successors, (902), 356 states have call predecessors, (902), 370 states have return successors, (970), 904 states have call predecessors, (970), 896 states have call successors, (970) [2022-07-12 12:11:10,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6282 states to 6282 states and 8873 transitions. [2022-07-12 12:11:10,178 INFO L78 Accepts]: Start accepts. Automaton has 6282 states and 8873 transitions. Word has length 76 [2022-07-12 12:11:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:11:10,178 INFO L495 AbstractCegarLoop]: Abstraction has 6282 states and 8873 transitions. [2022-07-12 12:11:10,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 3 states have internal predecessors, (59), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 12:11:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 6282 states and 8873 transitions. [2022-07-12 12:11:10,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-12 12:11:10,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:11:10,184 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:11:10,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 12:11:10,184 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:11:10,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:11:10,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1364965650, now seen corresponding path program 1 times [2022-07-12 12:11:10,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:11:10,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111981005] [2022-07-12 12:11:10,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:11:10,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:11:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:10,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:11:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:10,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:11:10,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 12:11:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:10,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 12:11:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:10,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 12:11:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:10,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 12:11:10,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:11:10,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111981005] [2022-07-12 12:11:10,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111981005] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:11:10,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:11:10,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 12:11:10,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055761007] [2022-07-12 12:11:10,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:11:10,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 12:11:10,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:11:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 12:11:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 12:11:10,430 INFO L87 Difference]: Start difference. First operand 6282 states and 8873 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 12:11:13,718 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:16,043 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:17,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.09s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:20,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:11:20,039 INFO L93 Difference]: Finished difference Result 18194 states and 25813 transitions. [2022-07-12 12:11:20,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:11:20,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 89 [2022-07-12 12:11:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:11:20,080 INFO L225 Difference]: With dead ends: 18194 [2022-07-12 12:11:20,081 INFO L226 Difference]: Without dead ends: 11915 [2022-07-12 12:11:20,100 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 12:11:20,100 INFO L413 NwaCegarLoop]: 2548 mSDtfsCounter, 3643 mSDsluCounter, 2232 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 1417 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3824 SdHoareTripleChecker+Valid, 4780 SdHoareTripleChecker+Invalid, 3371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1417 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:11:20,101 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3824 Valid, 4780 Invalid, 3371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1417 Valid, 1952 Invalid, 2 Unknown, 0 Unchecked, 9.2s Time] [2022-07-12 12:11:20,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11915 states. [2022-07-12 12:11:20,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11915 to 11280. [2022-07-12 12:11:20,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11280 states, 8931 states have (on average 1.3898779531967305) internal successors, (12413), 9079 states have internal predecessors, (12413), 1684 states have call successors, (1684), 634 states have call predecessors, (1684), 664 states have return successors, (1812), 1692 states have call predecessors, (1812), 1678 states have call successors, (1812) [2022-07-12 12:11:20,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11280 states to 11280 states and 15909 transitions. [2022-07-12 12:11:20,457 INFO L78 Accepts]: Start accepts. Automaton has 11280 states and 15909 transitions. Word has length 89 [2022-07-12 12:11:20,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:11:20,457 INFO L495 AbstractCegarLoop]: Abstraction has 11280 states and 15909 transitions. [2022-07-12 12:11:20,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 3 states have internal predecessors, (72), 2 states have call successors, (11), 4 states have call predecessors, (11), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-07-12 12:11:20,457 INFO L276 IsEmpty]: Start isEmpty. Operand 11280 states and 15909 transitions. [2022-07-12 12:11:20,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 12:11:20,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:11:20,469 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:11:20,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 12:11:20,470 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:11:20,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:11:20,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1931295713, now seen corresponding path program 1 times [2022-07-12 12:11:20,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:11:20,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657308250] [2022-07-12 12:11:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:11:20,471 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:11:20,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 12:11:20,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:20,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:11:20,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:20,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 12:11:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:20,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 12:11:20,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:20,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 12:11:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:20,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 12:11:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:20,718 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 12:11:20,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:11:20,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657308250] [2022-07-12 12:11:20,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657308250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:11:20,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:11:20,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:11:20,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067025229] [2022-07-12 12:11:20,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:11:20,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:11:20,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:11:20,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:11:20,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:11:20,720 INFO L87 Difference]: Start difference. First operand 11280 states and 15909 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 12:11:24,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:27,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:30,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:32,282 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:34,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:11:34,751 INFO L93 Difference]: Finished difference Result 14051 states and 20371 transitions. [2022-07-12 12:11:34,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:11:34,752 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2022-07-12 12:11:34,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:11:34,826 INFO L225 Difference]: With dead ends: 14051 [2022-07-12 12:11:34,826 INFO L226 Difference]: Without dead ends: 14048 [2022-07-12 12:11:34,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-12 12:11:34,838 INFO L413 NwaCegarLoop]: 1545 mSDtfsCounter, 2219 mSDsluCounter, 1918 mSDsCounter, 0 mSdLazyCounter, 1785 mSolverCounterSat, 991 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2305 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 2780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 991 IncrementalHoareTripleChecker+Valid, 1785 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.6s IncrementalHoareTripleChecker+Time [2022-07-12 12:11:34,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2305 Valid, 3463 Invalid, 2780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [991 Valid, 1785 Invalid, 4 Unknown, 0 Unchecked, 13.6s Time] [2022-07-12 12:11:34,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14048 states. [2022-07-12 12:11:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14048 to 11279. [2022-07-12 12:11:35,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11279 states, 8931 states have (on average 1.3887582577538908) internal successors, (12403), 9078 states have internal predecessors, (12403), 1683 states have call successors, (1683), 634 states have call predecessors, (1683), 664 states have return successors, (1812), 1692 states have call predecessors, (1812), 1678 states have call successors, (1812) [2022-07-12 12:11:35,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11279 states to 11279 states and 15898 transitions. [2022-07-12 12:11:35,329 INFO L78 Accepts]: Start accepts. Automaton has 11279 states and 15898 transitions. Word has length 87 [2022-07-12 12:11:35,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:11:35,330 INFO L495 AbstractCegarLoop]: Abstraction has 11279 states and 15898 transitions. [2022-07-12 12:11:35,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (10), 6 states have call predecessors, (10), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 12:11:35,331 INFO L276 IsEmpty]: Start isEmpty. Operand 11279 states and 15898 transitions. [2022-07-12 12:11:35,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 12:11:35,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:11:35,338 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:11:35,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 12:11:35,338 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:11:35,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:11:35,339 INFO L85 PathProgramCache]: Analyzing trace with hash 1592341211, now seen corresponding path program 1 times [2022-07-12 12:11:35,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:11:35,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355405513] [2022-07-12 12:11:35,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:11:35,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:11:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:11:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:35,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:35,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:11:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:35,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 12:11:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 12:11:35,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 12:11:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 12:11:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:35,581 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 12:11:35,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:11:35,582 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355405513] [2022-07-12 12:11:35,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355405513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:11:35,582 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:11:35,582 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:11:35,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583414753] [2022-07-12 12:11:35,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:11:35,583 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:11:35,583 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:11:35,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:11:35,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:11:35,583 INFO L87 Difference]: Start difference. First operand 11279 states and 15898 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 12:11:39,499 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:41,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:43,594 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:45,651 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:49,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:11:57,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:11:57,141 INFO L93 Difference]: Finished difference Result 24675 states and 35263 transitions. [2022-07-12 12:11:57,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 12:11:57,141 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 120 [2022-07-12 12:11:57,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:11:57,193 INFO L225 Difference]: With dead ends: 24675 [2022-07-12 12:11:57,193 INFO L226 Difference]: Without dead ends: 13399 [2022-07-12 12:11:57,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-07-12 12:11:57,224 INFO L413 NwaCegarLoop]: 1491 mSDtfsCounter, 1721 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 3215 mSolverCounterSat, 389 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 4592 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 389 IncrementalHoareTripleChecker+Valid, 3215 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-07-12 12:11:57,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 4592 Invalid, 3609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [389 Valid, 3215 Invalid, 5 Unknown, 0 Unchecked, 21.0s Time] [2022-07-12 12:11:57,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13399 states. [2022-07-12 12:11:57,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13399 to 11375. [2022-07-12 12:11:57,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11375 states, 9011 states have (on average 1.3879702585728555) internal successors, (12507), 9158 states have internal predecessors, (12507), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1836), 1708 states have call predecessors, (1836), 1694 states have call successors, (1836) [2022-07-12 12:11:57,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11375 states to 11375 states and 16042 transitions. [2022-07-12 12:11:57,601 INFO L78 Accepts]: Start accepts. Automaton has 11375 states and 16042 transitions. Word has length 120 [2022-07-12 12:11:57,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:11:57,602 INFO L495 AbstractCegarLoop]: Abstraction has 11375 states and 16042 transitions. [2022-07-12 12:11:57,602 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (15), 5 states have call predecessors, (15), 1 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 12:11:57,602 INFO L276 IsEmpty]: Start isEmpty. Operand 11375 states and 16042 transitions. [2022-07-12 12:11:57,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 12:11:57,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:11:57,610 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:11:57,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 12:11:57,610 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:11:57,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:11:57,611 INFO L85 PathProgramCache]: Analyzing trace with hash -651642087, now seen corresponding path program 1 times [2022-07-12 12:11:57,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:11:57,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35043849] [2022-07-12 12:11:57,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:11:57,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:11:57,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:11:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:57,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:11:57,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:11:57,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 12:11:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 12:11:57,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 12:11:57,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 12:11:57,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:11:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 12:11:57,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:11:57,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35043849] [2022-07-12 12:11:57,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35043849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:11:57,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:11:57,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:11:57,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464781753] [2022-07-12 12:11:57,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:11:57,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:11:57,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:11:57,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:11:57,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:11:57,819 INFO L87 Difference]: Start difference. First operand 11375 states and 16042 transitions. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 12:12:01,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:03,797 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:07,398 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.29s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:08,824 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:12,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:12:12,415 INFO L93 Difference]: Finished difference Result 24643 states and 35171 transitions. [2022-07-12 12:12:12,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 12:12:12,415 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 120 [2022-07-12 12:12:12,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:12:12,469 INFO L225 Difference]: With dead ends: 24643 [2022-07-12 12:12:12,469 INFO L226 Difference]: Without dead ends: 13271 [2022-07-12 12:12:12,501 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:12:12,504 INFO L413 NwaCegarLoop]: 1462 mSDtfsCounter, 1601 mSDsluCounter, 2284 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 370 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 3746 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.1s IncrementalHoareTripleChecker+Time [2022-07-12 12:12:12,505 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1739 Valid, 3746 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2190 Invalid, 2 Unknown, 0 Unchecked, 14.1s Time] [2022-07-12 12:12:12,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13271 states. [2022-07-12 12:12:12,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13271 to 11383. [2022-07-12 12:12:12,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11383 states, 9019 states have (on average 1.3876261226300033) internal successors, (12515), 9166 states have internal predecessors, (12515), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1836), 1708 states have call predecessors, (1836), 1694 states have call successors, (1836) [2022-07-12 12:12:12,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11383 states to 11383 states and 16050 transitions. [2022-07-12 12:12:12,907 INFO L78 Accepts]: Start accepts. Automaton has 11383 states and 16050 transitions. Word has length 120 [2022-07-12 12:12:12,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:12:12,907 INFO L495 AbstractCegarLoop]: Abstraction has 11383 states and 16050 transitions. [2022-07-12 12:12:12,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-12 12:12:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 11383 states and 16050 transitions. [2022-07-12 12:12:12,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 12:12:12,917 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:12:12,917 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:12:12,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 12:12:12,918 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:12:12,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:12:12,918 INFO L85 PathProgramCache]: Analyzing trace with hash 968809516, now seen corresponding path program 1 times [2022-07-12 12:12:12,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:12:12,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800610239] [2022-07-12 12:12:12,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:12:12,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:12:12,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:12:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:13,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:12:13,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:13,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 12:12:13,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 12:12:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 12:12:13,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:13,147 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-12 12:12:13,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:12:13,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800610239] [2022-07-12 12:12:13,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800610239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:12:13,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:12:13,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 12:12:13,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610505661] [2022-07-12 12:12:13,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:12:13,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 12:12:13,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:12:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 12:12:13,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-12 12:12:13,149 INFO L87 Difference]: Start difference. First operand 11383 states and 16050 transitions. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-12 12:12:16,905 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:18,950 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:20,968 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:29,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:12:29,595 INFO L93 Difference]: Finished difference Result 24909 states and 35617 transitions. [2022-07-12 12:12:29,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 12:12:29,596 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 122 [2022-07-12 12:12:29,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:12:29,655 INFO L225 Difference]: With dead ends: 24909 [2022-07-12 12:12:29,655 INFO L226 Difference]: Without dead ends: 13529 [2022-07-12 12:12:29,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:12:29,691 INFO L413 NwaCegarLoop]: 1534 mSDtfsCounter, 1643 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 2316 mSolverCounterSat, 427 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 3893 SdHoareTripleChecker+Invalid, 2746 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 427 IncrementalHoareTripleChecker+Valid, 2316 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:12:29,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1796 Valid, 3893 Invalid, 2746 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [427 Valid, 2316 Invalid, 3 Unknown, 0 Unchecked, 15.9s Time] [2022-07-12 12:12:29,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13529 states. [2022-07-12 12:12:30,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13529 to 11436. [2022-07-12 12:12:30,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11436 states, 9072 states have (on average 1.3844797178130512) internal successors, (12560), 9219 states have internal predecessors, (12560), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1836), 1708 states have call predecessors, (1836), 1694 states have call successors, (1836) [2022-07-12 12:12:30,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11436 states to 11436 states and 16095 transitions. [2022-07-12 12:12:30,423 INFO L78 Accepts]: Start accepts. Automaton has 11436 states and 16095 transitions. Word has length 122 [2022-07-12 12:12:30,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:12:30,424 INFO L495 AbstractCegarLoop]: Abstraction has 11436 states and 16095 transitions. [2022-07-12 12:12:30,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-12 12:12:30,424 INFO L276 IsEmpty]: Start isEmpty. Operand 11436 states and 16095 transitions. [2022-07-12 12:12:30,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-12 12:12:30,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:12:30,434 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:12:30,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 12:12:30,435 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:12:30,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:12:30,435 INFO L85 PathProgramCache]: Analyzing trace with hash -1198237660, now seen corresponding path program 1 times [2022-07-12 12:12:30,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:12:30,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2710569] [2022-07-12 12:12:30,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:12:30,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:12:30,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-12 12:12:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:30,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:30,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 12:12:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 12:12:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 12:12:30,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 12:12:30,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:30,669 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-07-12 12:12:30,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:12:30,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2710569] [2022-07-12 12:12:30,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2710569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:12:30,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:12:30,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 12:12:30,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641196899] [2022-07-12 12:12:30,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:12:30,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 12:12:30,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:12:30,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 12:12:30,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 12:12:30,673 INFO L87 Difference]: Start difference. First operand 11436 states and 16095 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:12:34,374 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:36,429 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:38,476 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:40,516 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:42,912 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:44,761 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:46,520 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:48,537 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:50,561 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:53,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:12:53,158 INFO L93 Difference]: Finished difference Result 24730 states and 35135 transitions. [2022-07-12 12:12:53,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:12:53,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 122 [2022-07-12 12:12:53,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:12:53,217 INFO L225 Difference]: With dead ends: 24730 [2022-07-12 12:12:53,217 INFO L226 Difference]: Without dead ends: 13285 [2022-07-12 12:12:53,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-12 12:12:53,248 INFO L413 NwaCegarLoop]: 1465 mSDtfsCounter, 2205 mSDsluCounter, 2812 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 877 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 3388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-07-12 12:12:53,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2342 Valid, 4277 Invalid, 3388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2505 Invalid, 6 Unknown, 0 Unchecked, 21.9s Time] [2022-07-12 12:12:53,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13285 states. [2022-07-12 12:12:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13285 to 11438. [2022-07-12 12:12:53,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11438 states, 9074 states have (on average 1.3837337447652633) internal successors, (12556), 9221 states have internal predecessors, (12556), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 664 states have return successors, (1836), 1708 states have call predecessors, (1836), 1694 states have call successors, (1836) [2022-07-12 12:12:53,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11438 states to 11438 states and 16091 transitions. [2022-07-12 12:12:53,676 INFO L78 Accepts]: Start accepts. Automaton has 11438 states and 16091 transitions. Word has length 122 [2022-07-12 12:12:53,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:12:53,677 INFO L495 AbstractCegarLoop]: Abstraction has 11438 states and 16091 transitions. [2022-07-12 12:12:53,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (14), 5 states have call predecessors, (14), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:12:53,677 INFO L276 IsEmpty]: Start isEmpty. Operand 11438 states and 16091 transitions. [2022-07-12 12:12:53,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 12:12:53,686 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:12:53,686 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:12:53,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 12:12:53,686 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:12:53,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:12:53,687 INFO L85 PathProgramCache]: Analyzing trace with hash 513237223, now seen corresponding path program 1 times [2022-07-12 12:12:53,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:12:53,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814697464] [2022-07-12 12:12:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:12:53,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:12:53,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:12:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:53,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:53,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:53,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:12:53,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:12:53,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 12:12:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 12:12:53,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 12:12:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:12:53,910 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-12 12:12:53,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:12:53,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814697464] [2022-07-12 12:12:53,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814697464] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:12:53,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:12:53,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:12:53,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700715199] [2022-07-12 12:12:53,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:12:53,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:12:53,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:12:53,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:12:53,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:12:53,912 INFO L87 Difference]: Start difference. First operand 11438 states and 16091 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:12:57,788 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:12:59,847 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.06s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:01,888 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:03,937 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:10,303 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:14,969 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:21,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:23,515 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:26,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:13:26,270 INFO L93 Difference]: Finished difference Result 31038 states and 44225 transitions. [2022-07-12 12:13:26,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 12:13:26,271 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 125 [2022-07-12 12:13:26,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:13:26,342 INFO L225 Difference]: With dead ends: 31038 [2022-07-12 12:13:26,342 INFO L226 Difference]: Without dead ends: 19603 [2022-07-12 12:13:26,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-12 12:13:26,370 INFO L413 NwaCegarLoop]: 2877 mSDtfsCounter, 3420 mSDsluCounter, 6486 mSDsCounter, 0 mSdLazyCounter, 5829 mSolverCounterSat, 1306 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 29.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3632 SdHoareTripleChecker+Valid, 9363 SdHoareTripleChecker+Invalid, 7142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1306 IncrementalHoareTripleChecker+Valid, 5829 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2022-07-12 12:13:26,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3632 Valid, 9363 Invalid, 7142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1306 Valid, 5829 Invalid, 7 Unknown, 0 Unchecked, 31.2s Time] [2022-07-12 12:13:26,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19603 states. [2022-07-12 12:13:27,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19603 to 11454. [2022-07-12 12:13:27,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11454 states, 9086 states have (on average 1.3832269425489765) internal successors, (12568), 9233 states have internal predecessors, (12568), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1844), 1712 states have call predecessors, (1844), 1694 states have call successors, (1844) [2022-07-12 12:13:27,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11454 states to 11454 states and 16111 transitions. [2022-07-12 12:13:27,169 INFO L78 Accepts]: Start accepts. Automaton has 11454 states and 16111 transitions. Word has length 125 [2022-07-12 12:13:27,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:13:27,170 INFO L495 AbstractCegarLoop]: Abstraction has 11454 states and 16111 transitions. [2022-07-12 12:13:27,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 12:13:27,170 INFO L276 IsEmpty]: Start isEmpty. Operand 11454 states and 16111 transitions. [2022-07-12 12:13:27,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-12 12:13:27,180 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:13:27,180 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:13:27,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 12:13:27,180 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:13:27,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:13:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1487946240, now seen corresponding path program 1 times [2022-07-12 12:13:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:13:27,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868631297] [2022-07-12 12:13:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:13:27,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:13:27,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:13:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:27,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:13:27,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:13:27,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 12:13:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:27,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 12:13:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 12:13:27,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:27,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 12:13:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 12:13:27,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-12 12:13:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:27,580 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 12:13:27,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:13:27,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868631297] [2022-07-12 12:13:27,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868631297] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:13:27,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:13:27,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 12:13:27,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067662610] [2022-07-12 12:13:27,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:13:27,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 12:13:27,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:13:27,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 12:13:27,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-12 12:13:27,583 INFO L87 Difference]: Start difference. First operand 11454 states and 16111 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:13:31,677 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:33,731 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:35,765 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:41,044 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:44,555 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:47,331 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:49,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 12:13:49,753 INFO L93 Difference]: Finished difference Result 25367 states and 36373 transitions. [2022-07-12 12:13:49,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 12:13:49,754 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 171 [2022-07-12 12:13:49,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 12:13:49,806 INFO L225 Difference]: With dead ends: 25367 [2022-07-12 12:13:49,806 INFO L226 Difference]: Without dead ends: 13916 [2022-07-12 12:13:49,836 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:13:49,837 INFO L413 NwaCegarLoop]: 1498 mSDtfsCounter, 2403 mSDsluCounter, 2871 mSDsCounter, 0 mSdLazyCounter, 2585 mSolverCounterSat, 745 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2546 SdHoareTripleChecker+Valid, 4369 SdHoareTripleChecker+Invalid, 3336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 745 IncrementalHoareTripleChecker+Valid, 2585 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.5s IncrementalHoareTripleChecker+Time [2022-07-12 12:13:49,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2546 Valid, 4369 Invalid, 3336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [745 Valid, 2585 Invalid, 6 Unknown, 0 Unchecked, 21.5s Time] [2022-07-12 12:13:49,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13916 states. [2022-07-12 12:13:50,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13916 to 11470. [2022-07-12 12:13:50,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11470 states, 9102 states have (on average 1.3825532849923095) internal successors, (12584), 9249 states have internal predecessors, (12584), 1699 states have call successors, (1699), 634 states have call predecessors, (1699), 668 states have return successors, (1844), 1712 states have call predecessors, (1844), 1694 states have call successors, (1844) [2022-07-12 12:13:50,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11470 states to 11470 states and 16127 transitions. [2022-07-12 12:13:50,353 INFO L78 Accepts]: Start accepts. Automaton has 11470 states and 16127 transitions. Word has length 171 [2022-07-12 12:13:50,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 12:13:50,353 INFO L495 AbstractCegarLoop]: Abstraction has 11470 states and 16127 transitions. [2022-07-12 12:13:50,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 4 states have internal predecessors, (119), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 12:13:50,353 INFO L276 IsEmpty]: Start isEmpty. Operand 11470 states and 16127 transitions. [2022-07-12 12:13:50,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-12 12:13:50,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 12:13:50,362 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 12:13:50,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 12:13:50,362 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 12:13:50,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 12:13:50,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1556925990, now seen corresponding path program 1 times [2022-07-12 12:13:50,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 12:13:50,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208954190] [2022-07-12 12:13:50,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 12:13:50,363 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 12:13:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:13:50,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:50,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:50,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:50,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 12:13:50,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 12:13:50,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 12:13:50,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:50,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:50,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 12:13:50,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 12:13:50,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 12:13:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-12 12:13:50,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-12 12:13:50,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 12:13:50,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 12:13:50,728 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-12 12:13:50,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 12:13:50,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208954190] [2022-07-12 12:13:50,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208954190] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 12:13:50,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 12:13:50,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 12:13:50,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082652834] [2022-07-12 12:13:50,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 12:13:50,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 12:13:50,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 12:13:50,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 12:13:50,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-12 12:13:50,731 INFO L87 Difference]: Start difference. First operand 11470 states and 16127 transitions. Second operand has 11 states, 11 states have (on average 11.090909090909092) internal successors, (122), 6 states have internal predecessors, (122), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 12:13:55,711 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:57,747 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 12:13:59,791 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers []