./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.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 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 06:59:10,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 06:59:10,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 06:59:10,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 06:59:10,850 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 06:59:10,851 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 06:59:10,851 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 06:59:10,852 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 06:59:10,853 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 06:59:10,854 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 06:59:10,855 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 06:59:10,857 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 06:59:10,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 06:59:10,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 06:59:10,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 06:59:10,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 06:59:10,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 06:59:10,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 06:59:10,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 06:59:10,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 06:59:10,874 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 06:59:10,875 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 06:59:10,876 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 06:59:10,877 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 06:59:10,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 06:59:10,885 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 06:59:10,885 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 06:59:10,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 06:59:10,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 06:59:10,887 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 06:59:10,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 06:59:10,888 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 06:59:10,889 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 06:59:10,889 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 06:59:10,890 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 06:59:10,890 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 06:59:10,891 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 06:59:10,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 06:59:10,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 06:59:10,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 06:59:10,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 06:59:10,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 06:59:10,910 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 06:59:10,910 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 06:59:10,911 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 06:59:10,911 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 06:59:10,912 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 06:59:10,912 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 06:59:10,912 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 06:59:10,912 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 06:59:10,912 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 06:59:10,913 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 06:59:10,913 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 06:59:10,913 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 06:59:10,913 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 06:59:10,914 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 06:59:10,914 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 06:59:10,914 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 06:59:10,914 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 06:59:10,914 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 06:59:10,914 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 06:59:10,914 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 06:59:10,915 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 06:59:10,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 06:59:10,915 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 06:59:10,915 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 06:59:10,915 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 06:59:10,915 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 06:59:10,915 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 06:59:10,916 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 06:59:10,917 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 06:59:10,917 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 06:59:10,917 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 06:59:10,917 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1264b42ba0b5dcb83ee2e2b35dfcd5adbd8a3fb1fa3fff4328b672883ffa55c1 [2021-12-18 06:59:11,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 06:59:11,123 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 06:59:11,141 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 06:59:11,141 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 06:59:11,142 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 06:59:11,143 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-18 06:59:11,203 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1a52c6cf/2a685db70e0e4f31b195c35b917f8bf3/FLAG077a8e3fe [2021-12-18 06:59:11,866 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 06:59:11,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-18 06:59:11,909 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1a52c6cf/2a685db70e0e4f31b195c35b917f8bf3/FLAG077a8e3fe [2021-12-18 06:59:12,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1a52c6cf/2a685db70e0e4f31b195c35b917f8bf3 [2021-12-18 06:59:12,010 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 06:59:12,011 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 06:59:12,024 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 06:59:12,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 06:59:12,028 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 06:59:12,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:59:12" (1/1) ... [2021-12-18 06:59:12,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28c0d4fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:12, skipping insertion in model container [2021-12-18 06:59:12,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 06:59:12" (1/1) ... [2021-12-18 06:59:12,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 06:59:12,162 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 06:59:13,330 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2021-12-18 06:59:13,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 06:59:13,443 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 06:59:13,656 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-linux-4.2-rc1/linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i[237227,237240] [2021-12-18 06:59:13,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 06:59:13,741 INFO L208 MainTranslator]: Completed translation [2021-12-18 06:59:13,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13 WrapperNode [2021-12-18 06:59:13,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 06:59:13,743 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 06:59:13,744 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 06:59:13,744 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 06:59:13,755 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:13,871 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:14,066 INFO L137 Inliner]: procedures = 306, calls = 1743, calls flagged for inlining = 109, calls inlined = 100, statements flattened = 3797 [2021-12-18 06:59:14,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 06:59:14,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 06:59:14,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 06:59:14,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 06:59:14,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:14,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:14,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:14,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:14,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:14,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:14,224 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:14,241 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 06:59:14,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 06:59:14,242 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 06:59:14,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 06:59:14,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (1/1) ... [2021-12-18 06:59:14,249 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 06:59:14,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 06:59:14,264 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) [2021-12-18 06:59:14,275 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 [2021-12-18 06:59:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab32 [2021-12-18 06:59:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab32 [2021-12-18 06:59:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_lock_of_memstick_host [2021-12-18 06:59:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_lock_of_memstick_host [2021-12-18 06:59:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-18 06:59:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~TO~int [2021-12-18 06:59:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2021-12-18 06:59:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2021-12-18 06:59:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-12-18 06:59:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-12-18 06:59:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure msb_stop [2021-12-18 06:59:14,323 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_stop [2021-12-18 06:59:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_pba [2021-12-18 06:59:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_pba [2021-12-18 06:59:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2021-12-18 06:59:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2021-12-18 06:59:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 06:59:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 06:59:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure blk_fetch_request [2021-12-18 06:59:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_fetch_request [2021-12-18 06:59:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure activate_work_1 [2021-12-18 06:59:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_work_1 [2021-12-18 06:59:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure arch_local_irq_restore [2021-12-18 06:59:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure arch_local_irq_restore [2021-12-18 06:59:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2021-12-18 06:59:14,324 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2021-12-18 06:59:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2021-12-18 06:59:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2021-12-18 06:59:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure msb_switch_to_parallel [2021-12-18 06:59:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_switch_to_parallel [2021-12-18 06:59:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-18 06:59:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-18 06:59:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 06:59:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 06:59:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure msb_validate_used_block_bitmap [2021-12-18 06:59:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_validate_used_block_bitmap [2021-12-18 06:59:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2021-12-18 06:59:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2021-12-18 06:59:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure msb_verify_block [2021-12-18 06:59:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_verify_block [2021-12-18 06:59:14,325 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2021-12-18 06:59:14,325 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_timer_2 [2021-12-18 06:59:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_timer_2 [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_msb_disk_lock [2021-12-18 06:59:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_msb_disk_lock [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_write [2021-12-18 06:59:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_write [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure trace_hardirqs_off [2021-12-18 06:59:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure trace_hardirqs_off [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_set_drvdata [2021-12-18 06:59:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_set_drvdata [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure __blk_end_request [2021-12-18 06:59:14,326 INFO L138 BoogieDeclarations]: Found implementation of procedure __blk_end_request [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 06:59:14,326 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_work_1 [2021-12-18 06:59:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_work_1 [2021-12-18 06:59:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure msb_invalidate_reg_window [2021-12-18 06:59:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_invalidate_reg_window [2021-12-18 06:59:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure msb_io_work [2021-12-18 06:59:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_io_work [2021-12-18 06:59:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_irqrestore [2021-12-18 06:59:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_irqrestore [2021-12-18 06:59:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_table [2021-12-18 06:59:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_table [2021-12-18 06:59:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 06:59:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure msb_erase_block [2021-12-18 06:59:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_erase_block [2021-12-18 06:59:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 06:59:14,327 INFO L130 BoogieDeclarations]: Found specification of procedure memstick_get_drvdata [2021-12-18 06:59:14,327 INFO L138 BoogieDeclarations]: Found implementation of procedure memstick_get_drvdata [2021-12-18 06:59:14,328 INFO L130 BoogieDeclarations]: Found specification of procedure msb_data_clear [2021-12-18 06:59:14,328 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_data_clear [2021-12-18 06:59:14,329 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2021-12-18 06:59:14,329 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2021-12-18 06:59:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work_on [2021-12-18 06:59:14,330 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work_on [2021-12-18 06:59:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2021-12-18 06:59:14,330 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2021-12-18 06:59:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2021-12-18 06:59:14,330 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2021-12-18 06:59:14,330 INFO L130 BoogieDeclarations]: Found specification of procedure _raw_spin_lock_irqsave [2021-12-18 06:59:14,330 INFO L138 BoogieDeclarations]: Found implementation of procedure _raw_spin_lock_irqsave [2021-12-18 06:59:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_bad_block_table [2021-12-18 06:59:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_bad_block_table [2021-12-18 06:59:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure msb_update_block [2021-12-18 06:59:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_update_block [2021-12-18 06:59:14,331 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_flush [2021-12-18 06:59:14,331 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_flush [2021-12-18 06:59:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_next [2021-12-18 06:59:14,332 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_next [2021-12-18 06:59:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure flush_workqueue [2021-12-18 06:59:14,332 INFO L138 BoogieDeclarations]: Found implementation of procedure flush_workqueue [2021-12-18 06:59:14,332 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_start [2021-12-18 06:59:14,333 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_start [2021-12-18 06:59:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure msb_run_state_machine [2021-12-18 06:59:14,333 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_run_state_machine [2021-12-18 06:59:14,333 INFO L130 BoogieDeclarations]: Found specification of procedure msb_sg_copy [2021-12-18 06:59:14,334 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_sg_copy [2021-12-18 06:59:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure sg_page [2021-12-18 06:59:14,334 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_page [2021-12-18 06:59:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2021-12-18 06:59:14,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2021-12-18 06:59:14,334 INFO L130 BoogieDeclarations]: Found specification of procedure find_next_zero_bit [2021-12-18 06:59:14,335 INFO L138 BoogieDeclarations]: Found implementation of procedure find_next_zero_bit [2021-12-18 06:59:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_lock_lock_of_memstick_host [2021-12-18 06:59:14,335 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_lock_lock_of_memstick_host [2021-12-18 06:59:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 06:59:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2021-12-18 06:59:14,335 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2021-12-18 06:59:14,335 INFO L130 BoogieDeclarations]: Found specification of procedure msb_get_zone_from_lba [2021-12-18 06:59:14,336 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_get_zone_from_lba [2021-12-18 06:59:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure msb_reset [2021-12-18 06:59:14,336 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_reset [2021-12-18 06:59:14,336 INFO L130 BoogieDeclarations]: Found specification of procedure activate_suitable_timer_2 [2021-12-18 06:59:14,336 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_suitable_timer_2 [2021-12-18 06:59:14,337 INFO L130 BoogieDeclarations]: Found specification of procedure blk_start_queue [2021-12-18 06:59:14,337 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_start_queue [2021-12-18 06:59:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-12-18 06:59:14,338 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2021-12-18 06:59:14,338 INFO L130 BoogieDeclarations]: Found specification of procedure unregister_blkdev [2021-12-18 06:59:14,338 INFO L138 BoogieDeclarations]: Found implementation of procedure unregister_blkdev [2021-12-18 06:59:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure msb_bd_getgeo [2021-12-18 06:59:14,339 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_bd_getgeo [2021-12-18 06:59:14,339 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 06:59:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure msb_remove [2021-12-18 06:59:14,340 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_remove [2021-12-18 06:59:14,340 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2021-12-18 06:59:14,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2021-12-18 06:59:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure sg_next [2021-12-18 06:59:14,341 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_next [2021-12-18 06:59:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_bad [2021-12-18 06:59:14,341 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_bad [2021-12-18 06:59:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_init_zalloc [2021-12-18 06:59:14,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_init_zalloc [2021-12-18 06:59:14,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 06:59:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_2 [2021-12-18 06:59:14,342 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_2 [2021-12-18 06:59:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_memset [2021-12-18 06:59:14,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_memset [2021-12-18 06:59:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 06:59:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure sg_nents [2021-12-18 06:59:14,342 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_nents [2021-12-18 06:59:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 06:59:14,342 INFO L130 BoogieDeclarations]: Found specification of procedure msb_read_page [2021-12-18 06:59:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_read_page [2021-12-18 06:59:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure __set_bit [2021-12-18 06:59:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure __set_bit [2021-12-18 06:59:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure sg_miter_stop [2021-12-18 06:59:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_miter_stop [2021-12-18 06:59:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure msb_set_overwrite_flag [2021-12-18 06:59:14,343 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_set_overwrite_flag [2021-12-18 06:59:14,343 INFO L130 BoogieDeclarations]: Found specification of procedure blk_rq_bytes [2021-12-18 06:59:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure blk_rq_bytes [2021-12-18 06:59:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure call_and_disable_all_1 [2021-12-18 06:59:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure call_and_disable_all_1 [2021-12-18 06:59:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure msb_disk_release [2021-12-18 06:59:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_disk_release [2021-12-18 06:59:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure msb_mark_block_used [2021-12-18 06:59:14,344 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_mark_block_used [2021-12-18 06:59:14,344 INFO L130 BoogieDeclarations]: Found specification of procedure msb_cache_discard [2021-12-18 06:59:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_cache_discard [2021-12-18 06:59:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2021-12-18 06:59:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2021-12-18 06:59:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure msb_start [2021-12-18 06:59:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_start [2021-12-18 06:59:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure msecs_to_jiffies [2021-12-18 06:59:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure msecs_to_jiffies [2021-12-18 06:59:14,345 INFO L130 BoogieDeclarations]: Found specification of procedure put_disk [2021-12-18 06:59:14,345 INFO L138 BoogieDeclarations]: Found implementation of procedure put_disk [2021-12-18 06:59:14,346 INFO L130 BoogieDeclarations]: Found specification of procedure idr_remove [2021-12-18 06:59:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure idr_remove [2021-12-18 06:59:14,346 INFO L130 BoogieDeclarations]: Found specification of procedure msb_init_card [2021-12-18 06:59:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure msb_init_card [2021-12-18 06:59:14,346 INFO L130 BoogieDeclarations]: Found specification of procedure sg_set_page [2021-12-18 06:59:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_set_page [2021-12-18 06:59:14,346 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2021-12-18 06:59:14,346 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2021-12-18 06:59:14,347 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 06:59:14,347 INFO L130 BoogieDeclarations]: Found specification of procedure sg_init_one [2021-12-18 06:59:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure sg_init_one [2021-12-18 06:59:14,347 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2021-12-18 06:59:14,347 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2021-12-18 06:59:14,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_mutex_unlock_msb_disk_lock [2021-12-18 06:59:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_mutex_unlock_msb_disk_lock [2021-12-18 06:59:14,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 06:59:14,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 06:59:14,868 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 06:59:14,884 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 06:59:14,995 INFO L768 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2021-12-18 06:59:18,886 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 06:59:18,901 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 06:59:18,903 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 06:59:18,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:59:18 BoogieIcfgContainer [2021-12-18 06:59:18,907 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 06:59:18,909 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 06:59:18,909 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 06:59:18,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 06:59:18,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 06:59:12" (1/3) ... [2021-12-18 06:59:18,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b5b89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:59:18, skipping insertion in model container [2021-12-18 06:59:18,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 06:59:13" (2/3) ... [2021-12-18 06:59:18,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b5b89e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 06:59:18, skipping insertion in model container [2021-12-18 06:59:18,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 06:59:18" (3/3) ... [2021-12-18 06:59:18,913 INFO L111 eAbstractionObserver]: Analyzing ICFG linux-4.2-rc1.tar.xz-32_7a-drivers--memstick--core--ms_block.ko-entry_point.cil.out.i [2021-12-18 06:59:18,916 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 06:59:18,917 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 06:59:18,959 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 06:59:18,965 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 06:59:18,965 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 06:59:19,001 INFO L276 IsEmpty]: Start isEmpty. Operand has 1463 states, 1031 states have (on average 1.3773035887487877) internal successors, (1420), 1075 states have internal predecessors, (1420), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) [2021-12-18 06:59:19,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-18 06:59:19,008 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:59:19,008 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 06:59:19,009 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:59:19,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:59:19,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1642665137, now seen corresponding path program 1 times [2021-12-18 06:59:19,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:59:19,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732325854] [2021-12-18 06:59:19,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:59:19,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:59:19,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:59:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:19,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:19,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:59:19,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:19,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 06:59:19,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:19,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 06:59:19,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:19,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 06:59:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:19,525 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-18 06:59:19,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:59:19,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732325854] [2021-12-18 06:59:19,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732325854] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:59:19,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:59:19,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 06:59:19,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564615493] [2021-12-18 06:59:19,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:59:19,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 06:59:19,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:59:19,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 06:59:19,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 06:59:19,560 INFO L87 Difference]: Start difference. First operand has 1463 states, 1031 states have (on average 1.3773035887487877) internal successors, (1420), 1075 states have internal predecessors, (1420), 343 states have call successors, (343), 88 states have call predecessors, (343), 87 states have return successors, (337), 331 states have call predecessors, (337), 337 states have call successors, (337) Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:23,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:59:23,134 INFO L93 Difference]: Finished difference Result 3235 states and 4838 transitions. [2021-12-18 06:59:23,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 06:59:23,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2021-12-18 06:59:23,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:59:23,225 INFO L225 Difference]: With dead ends: 3235 [2021-12-18 06:59:23,226 INFO L226 Difference]: Without dead ends: 1750 [2021-12-18 06:59:23,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:59:23,240 INFO L933 BasicCegarLoop]: 1966 mSDtfsCounter, 934 mSDsluCounter, 2660 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 956 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 979 SdHoareTripleChecker+Valid, 4626 SdHoareTripleChecker+Invalid, 2974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 956 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-18 06:59:23,241 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [979 Valid, 4626 Invalid, 2974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [956 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-18 06:59:23,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2021-12-18 06:59:23,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1438. [2021-12-18 06:59:23,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1438 states, 1014 states have (on average 1.3629191321499015) internal successors, (1382), 1050 states have internal predecessors, (1382), 337 states have call successors, (337), 87 states have call predecessors, (337), 86 states have return successors, (328), 322 states have call predecessors, (328), 328 states have call successors, (328) [2021-12-18 06:59:23,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 2047 transitions. [2021-12-18 06:59:23,392 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 2047 transitions. Word has length 84 [2021-12-18 06:59:23,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:59:23,392 INFO L470 AbstractCegarLoop]: Abstraction has 1438 states and 2047 transitions. [2021-12-18 06:59:23,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 2 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:23,393 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 2047 transitions. [2021-12-18 06:59:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-18 06:59:23,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:59:23,400 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 06:59:23,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 06:59:23,400 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:59:23,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:59:23,401 INFO L85 PathProgramCache]: Analyzing trace with hash 2002176851, now seen corresponding path program 1 times [2021-12-18 06:59:23,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:59:23,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621936872] [2021-12-18 06:59:23,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:59:23,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:59:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:59:23,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:23,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:59:23,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 06:59:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:23,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 06:59:23,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 06:59:23,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:23,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-18 06:59:23,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:59:23,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621936872] [2021-12-18 06:59:23,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621936872] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:59:23,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:59:23,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:59:23,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924418243] [2021-12-18 06:59:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:59:23,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:59:23,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:59:23,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:59:23,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:59:23,571 INFO L87 Difference]: Start difference. First operand 1438 states and 2047 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 06:59:28,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:59:28,517 INFO L93 Difference]: Finished difference Result 4860 states and 7153 transitions. [2021-12-18 06:59:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:59:28,517 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 84 [2021-12-18 06:59:28,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:59:28,549 INFO L225 Difference]: With dead ends: 4860 [2021-12-18 06:59:28,550 INFO L226 Difference]: Without dead ends: 3442 [2021-12-18 06:59:28,557 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 06:59:28,558 INFO L933 BasicCegarLoop]: 2251 mSDtfsCounter, 3696 mSDsluCounter, 3724 mSDsCounter, 0 mSdLazyCounter, 2731 mSolverCounterSat, 2174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3955 SdHoareTripleChecker+Valid, 5975 SdHoareTripleChecker+Invalid, 4905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2174 IncrementalHoareTripleChecker+Valid, 2731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2021-12-18 06:59:28,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3955 Valid, 5975 Invalid, 4905 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2174 Valid, 2731 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2021-12-18 06:59:28,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3442 states. [2021-12-18 06:59:28,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3442 to 2799. [2021-12-18 06:59:28,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2799 states, 1977 states have (on average 1.3641881638846738) internal successors, (2697), 2043 states have internal predecessors, (2697), 651 states have call successors, (651), 171 states have call predecessors, (651), 170 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-18 06:59:28,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2799 states to 2799 states and 3990 transitions. [2021-12-18 06:59:28,660 INFO L78 Accepts]: Start accepts. Automaton has 2799 states and 3990 transitions. Word has length 84 [2021-12-18 06:59:28,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:59:28,661 INFO L470 AbstractCegarLoop]: Abstraction has 2799 states and 3990 transitions. [2021-12-18 06:59:28,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (11), 5 states have call predecessors, (11), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2021-12-18 06:59:28,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2799 states and 3990 transitions. [2021-12-18 06:59:28,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-18 06:59:28,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:59:28,665 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 06:59:28,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 06:59:28,665 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:59:28,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:59:28,665 INFO L85 PathProgramCache]: Analyzing trace with hash 21875653, now seen corresponding path program 1 times [2021-12-18 06:59:28,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:59:28,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785283108] [2021-12-18 06:59:28,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:59:28,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:59:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:59:28,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:28,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:59:28,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:28,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 06:59:28,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:28,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 06:59:28,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:28,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 06:59:28,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:28,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:28,844 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-18 06:59:28,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:59:28,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785283108] [2021-12-18 06:59:28,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785283108] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:59:28,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:59:28,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:59:28,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883500048] [2021-12-18 06:59:28,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:59:28,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:59:28,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:59:28,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:59:28,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:59:28,846 INFO L87 Difference]: Start difference. First operand 2799 states and 3990 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:31,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:59:31,031 INFO L93 Difference]: Finished difference Result 3422 states and 5106 transitions. [2021-12-18 06:59:31,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:59:31,032 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2021-12-18 06:59:31,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:59:31,053 INFO L225 Difference]: With dead ends: 3422 [2021-12-18 06:59:31,054 INFO L226 Difference]: Without dead ends: 3419 [2021-12-18 06:59:31,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:59:31,060 INFO L933 BasicCegarLoop]: 1900 mSDtfsCounter, 3473 mSDsluCounter, 1077 mSDsCounter, 0 mSdLazyCounter, 951 mSolverCounterSat, 1814 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3691 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1814 IncrementalHoareTripleChecker+Valid, 951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:59:31,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3691 Valid, 2977 Invalid, 2765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1814 Valid, 951 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-18 06:59:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3419 states. [2021-12-18 06:59:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3419 to 2798. [2021-12-18 06:59:31,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2798 states, 1977 states have (on average 1.3636823469903894) internal successors, (2696), 2042 states have internal predecessors, (2696), 650 states have call successors, (650), 171 states have call predecessors, (650), 170 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-18 06:59:31,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2798 states to 2798 states and 3988 transitions. [2021-12-18 06:59:31,163 INFO L78 Accepts]: Start accepts. Automaton has 2798 states and 3988 transitions. Word has length 87 [2021-12-18 06:59:31,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:59:31,165 INFO L470 AbstractCegarLoop]: Abstraction has 2798 states and 3988 transitions. [2021-12-18 06:59:31,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 3 states have internal predecessors, (41), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:31,165 INFO L276 IsEmpty]: Start isEmpty. Operand 2798 states and 3988 transitions. [2021-12-18 06:59:31,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-12-18 06:59:31,166 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:59:31,166 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 06:59:31,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 06:59:31,167 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:59:31,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:59:31,167 INFO L85 PathProgramCache]: Analyzing trace with hash 677651121, now seen corresponding path program 1 times [2021-12-18 06:59:31,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:59:31,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928432073] [2021-12-18 06:59:31,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:59:31,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:59:31,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:59:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:31,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:59:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:31,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 06:59:31,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 06:59:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:31,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 06:59:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:31,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:31,392 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-18 06:59:31,392 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:59:31,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928432073] [2021-12-18 06:59:31,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928432073] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:59:31,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:59:31,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:59:31,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30088627] [2021-12-18 06:59:31,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:59:31,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:59:31,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:59:31,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:59:31,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:59:31,395 INFO L87 Difference]: Start difference. First operand 2798 states and 3988 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:34,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:59:34,274 INFO L93 Difference]: Finished difference Result 3421 states and 5104 transitions. [2021-12-18 06:59:34,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 06:59:34,275 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 88 [2021-12-18 06:59:34,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:59:34,305 INFO L225 Difference]: With dead ends: 3421 [2021-12-18 06:59:34,305 INFO L226 Difference]: Without dead ends: 3418 [2021-12-18 06:59:34,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:59:34,308 INFO L933 BasicCegarLoop]: 1899 mSDtfsCounter, 3152 mSDsluCounter, 1717 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 1362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 3616 SdHoareTripleChecker+Invalid, 2881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1362 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-18 06:59:34,309 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3369 Valid, 3616 Invalid, 2881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1362 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-18 06:59:34,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3418 states. [2021-12-18 06:59:34,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3418 to 2797. [2021-12-18 06:59:34,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2797 states, 1977 states have (on average 1.3631765300961052) internal successors, (2695), 2041 states have internal predecessors, (2695), 649 states have call successors, (649), 171 states have call predecessors, (649), 170 states have return successors, (642), 628 states have call predecessors, (642), 642 states have call successors, (642) [2021-12-18 06:59:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2797 states to 2797 states and 3986 transitions. [2021-12-18 06:59:34,404 INFO L78 Accepts]: Start accepts. Automaton has 2797 states and 3986 transitions. Word has length 88 [2021-12-18 06:59:34,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:59:34,405 INFO L470 AbstractCegarLoop]: Abstraction has 2797 states and 3986 transitions. [2021-12-18 06:59:34,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 3 states have internal predecessors, (42), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:34,406 INFO L276 IsEmpty]: Start isEmpty. Operand 2797 states and 3986 transitions. [2021-12-18 06:59:34,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-18 06:59:34,410 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:59:34,410 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 06:59:34,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 06:59:34,410 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:59:34,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:59:34,411 INFO L85 PathProgramCache]: Analyzing trace with hash -468140984, now seen corresponding path program 1 times [2021-12-18 06:59:34,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:59:34,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990379278] [2021-12-18 06:59:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:59:34,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:59:34,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:59:34,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:34,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:34,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:59:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:34,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 06:59:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 06:59:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 06:59:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:34,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-18 06:59:34,572 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:59:34,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990379278] [2021-12-18 06:59:34,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990379278] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:59:34,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:59:34,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:59:34,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189981082] [2021-12-18 06:59:34,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:59:34,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:59:34,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:59:34,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:59:34,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:59:34,574 INFO L87 Difference]: Start difference. First operand 2797 states and 3986 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:38,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:59:38,830 INFO L93 Difference]: Finished difference Result 4906 states and 7221 transitions. [2021-12-18 06:59:38,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:59:38,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 89 [2021-12-18 06:59:38,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:59:38,851 INFO L225 Difference]: With dead ends: 4906 [2021-12-18 06:59:38,851 INFO L226 Difference]: Without dead ends: 4902 [2021-12-18 06:59:38,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 06:59:38,853 INFO L933 BasicCegarLoop]: 2416 mSDtfsCounter, 3190 mSDsluCounter, 3947 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 1448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3426 SdHoareTripleChecker+Valid, 6363 SdHoareTripleChecker+Invalid, 4471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1448 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2021-12-18 06:59:38,855 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3426 Valid, 6363 Invalid, 4471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1448 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2021-12-18 06:59:38,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4902 states. [2021-12-18 06:59:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4902 to 4069. [2021-12-18 06:59:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4069 states, 2871 states have (on average 1.3535353535353536) internal successors, (3886), 2955 states have internal predecessors, (3886), 923 states have call successors, (923), 275 states have call predecessors, (923), 274 states have return successors, (918), 898 states have call predecessors, (918), 918 states have call successors, (918) [2021-12-18 06:59:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4069 states to 4069 states and 5727 transitions. [2021-12-18 06:59:38,977 INFO L78 Accepts]: Start accepts. Automaton has 4069 states and 5727 transitions. Word has length 89 [2021-12-18 06:59:38,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:59:38,978 INFO L470 AbstractCegarLoop]: Abstraction has 4069 states and 5727 transitions. [2021-12-18 06:59:38,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 3 states have internal predecessors, (43), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:38,978 INFO L276 IsEmpty]: Start isEmpty. Operand 4069 states and 5727 transitions. [2021-12-18 06:59:38,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2021-12-18 06:59:38,980 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:59:38,980 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 06:59:38,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 06:59:38,980 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:59:38,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:59:38,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1627953004, now seen corresponding path program 1 times [2021-12-18 06:59:38,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:59:38,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799755766] [2021-12-18 06:59:38,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:59:38,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:59:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:59:39,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:39,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:59:39,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:39,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 06:59:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 06:59:39,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 06:59:39,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:39,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:39,143 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-18 06:59:39,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:59:39,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799755766] [2021-12-18 06:59:39,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799755766] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:59:39,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:59:39,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:59:39,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031165576] [2021-12-18 06:59:39,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:59:39,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:59:39,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:59:39,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:59:39,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:59:39,166 INFO L87 Difference]: Start difference. First operand 4069 states and 5727 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:42,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:59:42,478 INFO L93 Difference]: Finished difference Result 4938 states and 7252 transitions. [2021-12-18 06:59:42,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 06:59:42,478 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 90 [2021-12-18 06:59:42,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:59:42,500 INFO L225 Difference]: With dead ends: 4938 [2021-12-18 06:59:42,500 INFO L226 Difference]: Without dead ends: 4934 [2021-12-18 06:59:42,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 06:59:42,502 INFO L933 BasicCegarLoop]: 1893 mSDtfsCounter, 2842 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 2088 mSolverCounterSat, 1275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3050 SdHoareTripleChecker+Valid, 4523 SdHoareTripleChecker+Invalid, 3363 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1275 IncrementalHoareTripleChecker+Valid, 2088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 06:59:42,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3050 Valid, 4523 Invalid, 3363 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1275 Valid, 2088 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-18 06:59:42,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4934 states. [2021-12-18 06:59:42,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4934 to 4101. [2021-12-18 06:59:42,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4101 states, 2891 states have (on average 1.350051885160844) internal successors, (3903), 2973 states have internal predecessors, (3903), 929 states have call successors, (929), 281 states have call predecessors, (929), 280 states have return successors, (926), 906 states have call predecessors, (926), 926 states have call successors, (926) [2021-12-18 06:59:42,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5758 transitions. [2021-12-18 06:59:42,628 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5758 transitions. Word has length 90 [2021-12-18 06:59:42,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:59:42,629 INFO L470 AbstractCegarLoop]: Abstraction has 4101 states and 5758 transitions. [2021-12-18 06:59:42,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:42,630 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5758 transitions. [2021-12-18 06:59:42,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-12-18 06:59:42,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:59:42,631 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2021-12-18 06:59:42,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 06:59:42,631 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:59:42,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:59:42,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1072584907, now seen corresponding path program 1 times [2021-12-18 06:59:42,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:59:42,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555706525] [2021-12-18 06:59:42,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:59:42,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:59:42,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:59:42,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:42,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:59:42,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:42,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:42,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 06:59:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:42,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 06:59:42,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:42,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 06:59:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:42,751 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-18 06:59:42,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:59:42,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555706525] [2021-12-18 06:59:42,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555706525] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:59:42,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:59:42,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 06:59:42,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067543479] [2021-12-18 06:59:42,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:59:42,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 06:59:42,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:59:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 06:59:42,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 06:59:42,753 INFO L87 Difference]: Start difference. First operand 4101 states and 5758 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:45,130 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 [] [2021-12-18 06:59:47,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:59:47,123 INFO L93 Difference]: Finished difference Result 4962 states and 7274 transitions. [2021-12-18 06:59:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 06:59:47,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 91 [2021-12-18 06:59:47,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:59:47,151 INFO L225 Difference]: With dead ends: 4962 [2021-12-18 06:59:47,151 INFO L226 Difference]: Without dead ends: 4946 [2021-12-18 06:59:47,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2021-12-18 06:59:47,156 INFO L933 BasicCegarLoop]: 1884 mSDtfsCounter, 3453 mSDsluCounter, 1079 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 1794 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3678 SdHoareTripleChecker+Valid, 2963 SdHoareTripleChecker+Invalid, 2741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1794 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2021-12-18 06:59:47,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3678 Valid, 2963 Invalid, 2741 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1794 Valid, 946 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2021-12-18 06:59:47,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-12-18 06:59:47,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4103. [2021-12-18 06:59:47,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 2892 states have (on average 1.3499308437067774) internal successors, (3904), 2972 states have internal predecessors, (3904), 926 states have call successors, (926), 285 states have call predecessors, (926), 284 states have return successors, (924), 905 states have call predecessors, (924), 924 states have call successors, (924) [2021-12-18 06:59:47,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5754 transitions. [2021-12-18 06:59:47,307 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5754 transitions. Word has length 91 [2021-12-18 06:59:47,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:59:47,307 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 5754 transitions. [2021-12-18 06:59:47,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (9), 5 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-18 06:59:47,308 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5754 transitions. [2021-12-18 06:59:47,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-18 06:59:47,314 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:59:47,314 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:59:47,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 06:59:47,314 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:59:47,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:59:47,315 INFO L85 PathProgramCache]: Analyzing trace with hash 2051341802, now seen corresponding path program 1 times [2021-12-18 06:59:47,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:59:47,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082050513] [2021-12-18 06:59:47,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:59:47,315 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:59:47,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:59:47,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:59:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:47,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 06:59:47,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 06:59:47,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 06:59:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:47,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 06:59:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:47,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2021-12-18 06:59:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:47,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:47,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 06:59:47,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 06:59:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:47,486 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-18 06:59:47,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:59:47,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082050513] [2021-12-18 06:59:47,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082050513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:59:47,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:59:47,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 06:59:47,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965499458] [2021-12-18 06:59:47,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:59:47,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 06:59:47,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:59:47,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 06:59:47,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-12-18 06:59:47,489 INFO L87 Difference]: Start difference. First operand 4103 states and 5754 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 06:59:52,474 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:59:54,543 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 06:59:56,615 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 [] [2021-12-18 06:59:58,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 06:59:58,250 INFO L93 Difference]: Finished difference Result 9035 states and 12990 transitions. [2021-12-18 06:59:58,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 06:59:58,251 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 144 [2021-12-18 06:59:58,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 06:59:58,273 INFO L225 Difference]: With dead ends: 9035 [2021-12-18 06:59:58,273 INFO L226 Difference]: Without dead ends: 4946 [2021-12-18 06:59:58,287 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-18 06:59:58,288 INFO L933 BasicCegarLoop]: 1653 mSDtfsCounter, 2785 mSDsluCounter, 1896 mSDsCounter, 0 mSdLazyCounter, 4963 mSolverCounterSat, 2096 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3030 SdHoareTripleChecker+Valid, 3549 SdHoareTripleChecker+Invalid, 7062 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2096 IncrementalHoareTripleChecker+Valid, 4963 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2021-12-18 06:59:58,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3030 Valid, 3549 Invalid, 7062 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2096 Valid, 4963 Invalid, 3 Unknown, 0 Unchecked, 10.5s Time] [2021-12-18 06:59:58,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2021-12-18 06:59:58,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4103. [2021-12-18 06:59:58,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4103 states, 2892 states have (on average 1.3492392807745506) internal successors, (3902), 2972 states have internal predecessors, (3902), 926 states have call successors, (926), 285 states have call predecessors, (926), 284 states have return successors, (924), 905 states have call predecessors, (924), 924 states have call successors, (924) [2021-12-18 06:59:58,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4103 states to 4103 states and 5752 transitions. [2021-12-18 06:59:58,522 INFO L78 Accepts]: Start accepts. Automaton has 4103 states and 5752 transitions. Word has length 144 [2021-12-18 06:59:58,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 06:59:58,523 INFO L470 AbstractCegarLoop]: Abstraction has 4103 states and 5752 transitions. [2021-12-18 06:59:58,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 06:59:58,523 INFO L276 IsEmpty]: Start isEmpty. Operand 4103 states and 5752 transitions. [2021-12-18 06:59:58,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-18 06:59:58,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 06:59:58,530 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 06:59:58,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 06:59:58,531 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 06:59:58,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 06:59:58,532 INFO L85 PathProgramCache]: Analyzing trace with hash -469368472, now seen corresponding path program 1 times [2021-12-18 06:59:58,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 06:59:58,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243206628] [2021-12-18 06:59:58,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 06:59:58,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 06:59:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 06:59:58,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 06:59:58,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:58,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 06:59:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 06:59:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 06:59:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 06:59:58,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:58,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 06:59:58,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 06:59:58,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 06:59:58,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 06:59:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 06:59:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 06:59:58,720 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2021-12-18 06:59:58,720 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 06:59:58,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243206628] [2021-12-18 06:59:58,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243206628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 06:59:58,721 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 06:59:58,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 06:59:58,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111102904] [2021-12-18 06:59:58,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 06:59:58,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 06:59:58,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 06:59:58,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 06:59:58,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 06:59:58,723 INFO L87 Difference]: Start difference. First operand 4103 states and 5752 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-18 07:00:05,127 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 [] [2021-12-18 07:00:07,196 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:00:09,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2021-12-18 07:00:12,217 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:00:15,657 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:00:17,724 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:00:19,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:00:19,165 INFO L93 Difference]: Finished difference Result 11416 states and 16464 transitions. [2021-12-18 07:00:19,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 07:00:19,166 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2021-12-18 07:00:19,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:00:19,199 INFO L225 Difference]: With dead ends: 11416 [2021-12-18 07:00:19,199 INFO L226 Difference]: Without dead ends: 7333 [2021-12-18 07:00:19,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-18 07:00:19,217 INFO L933 BasicCegarLoop]: 3223 mSDtfsCounter, 4079 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 7365 mSolverCounterSat, 3031 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4395 SdHoareTripleChecker+Valid, 5292 SdHoareTripleChecker+Invalid, 10401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3031 IncrementalHoareTripleChecker+Valid, 7365 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 20.0s IncrementalHoareTripleChecker+Time [2021-12-18 07:00:19,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4395 Valid, 5292 Invalid, 10401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3031 Valid, 7365 Invalid, 5 Unknown, 0 Unchecked, 20.0s Time] [2021-12-18 07:00:19,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7333 states. [2021-12-18 07:00:19,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7333 to 6112. [2021-12-18 07:00:19,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 4310 states have (on average 1.348491879350348) internal successors, (5812), 4428 states have internal predecessors, (5812), 1375 states have call successors, (1375), 427 states have call predecessors, (1375), 426 states have return successors, (1377), 1344 states have call predecessors, (1377), 1373 states have call successors, (1377) [2021-12-18 07:00:19,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 8564 transitions. [2021-12-18 07:00:19,446 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 8564 transitions. Word has length 147 [2021-12-18 07:00:19,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:00:19,447 INFO L470 AbstractCegarLoop]: Abstraction has 6112 states and 8564 transitions. [2021-12-18 07:00:19,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 3 states have internal predecessors, (65), 3 states have call successors, (15), 6 states have call predecessors, (15), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-18 07:00:19,447 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 8564 transitions. [2021-12-18 07:00:19,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-18 07:00:19,451 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:00:19,451 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:00:19,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-18 07:00:19,452 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:00:19,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:00:19,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1307854147, now seen corresponding path program 1 times [2021-12-18 07:00:19,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:00:19,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [32491078] [2021-12-18 07:00:19,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:00:19,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:00:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:00:19,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:19,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:00:19,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:19,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:19,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 07:00:19,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:19,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 07:00:19,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:19,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 07:00:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:19,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 07:00:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:19,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 07:00:19,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:19,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:19,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 07:00:19,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 07:00:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:19,631 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-18 07:00:19,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:00:19,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [32491078] [2021-12-18 07:00:19,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [32491078] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:00:19,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:00:19,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 07:00:19,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383782153] [2021-12-18 07:00:19,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:00:19,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 07:00:19,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:00:19,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 07:00:19,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 07:00:19,633 INFO L87 Difference]: Start difference. First operand 6112 states and 8564 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-18 07:00:24,782 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 [] [2021-12-18 07:00:27,552 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:00:29,621 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:00:31,691 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 [] [2021-12-18 07:00:32,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:00:32,712 INFO L93 Difference]: Finished difference Result 13371 states and 19576 transitions. [2021-12-18 07:00:32,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 07:00:32,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 148 [2021-12-18 07:00:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:00:32,754 INFO L225 Difference]: With dead ends: 13371 [2021-12-18 07:00:32,754 INFO L226 Difference]: Without dead ends: 7279 [2021-12-18 07:00:32,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-12-18 07:00:32,794 INFO L933 BasicCegarLoop]: 1523 mSDtfsCounter, 3631 mSDsluCounter, 1013 mSDsCounter, 0 mSdLazyCounter, 4012 mSolverCounterSat, 2635 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3704 SdHoareTripleChecker+Valid, 2536 SdHoareTripleChecker+Invalid, 6651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2635 IncrementalHoareTripleChecker+Valid, 4012 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2021-12-18 07:00:32,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3704 Valid, 2536 Invalid, 6651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2635 Valid, 4012 Invalid, 4 Unknown, 0 Unchecked, 12.7s Time] [2021-12-18 07:00:32,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7279 states. [2021-12-18 07:00:33,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7279 to 6076. [2021-12-18 07:00:33,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6076 states, 4274 states have (on average 1.2810014038371549) internal successors, (5475), 4392 states have internal predecessors, (5475), 1375 states have call successors, (1375), 427 states have call predecessors, (1375), 426 states have return successors, (1377), 1344 states have call predecessors, (1377), 1373 states have call successors, (1377) [2021-12-18 07:00:33,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6076 states to 6076 states and 8227 transitions. [2021-12-18 07:00:33,128 INFO L78 Accepts]: Start accepts. Automaton has 6076 states and 8227 transitions. Word has length 148 [2021-12-18 07:00:33,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:00:33,129 INFO L470 AbstractCegarLoop]: Abstraction has 6076 states and 8227 transitions. [2021-12-18 07:00:33,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 6 states have call predecessors, (14), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-18 07:00:33,129 INFO L276 IsEmpty]: Start isEmpty. Operand 6076 states and 8227 transitions. [2021-12-18 07:00:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-12-18 07:00:33,135 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:00:33,135 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:00:33,136 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 07:00:33,136 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:00:33,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:00:33,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1730555973, now seen corresponding path program 1 times [2021-12-18 07:00:33,137 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:00:33,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635333665] [2021-12-18 07:00:33,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:00:33,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:00:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:00:33,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:33,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:33,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:00:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:33,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 07:00:33,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 07:00:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 07:00:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:33,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 07:00:33,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:33,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 07:00:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:33,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 07:00:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2021-12-18 07:00:33,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-18 07:00:33,295 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:00:33,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635333665] [2021-12-18 07:00:33,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635333665] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:00:33,295 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:00:33,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-18 07:00:33,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365806409] [2021-12-18 07:00:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:00:33,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 07:00:33,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:00:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 07:00:33,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 07:00:33,297 INFO L87 Difference]: Start difference. First operand 6076 states and 8227 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 07:00:39,512 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 [] [2021-12-18 07:00:41,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:00:42,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:00:42,822 INFO L93 Difference]: Finished difference Result 7281 states and 10331 transitions. [2021-12-18 07:00:42,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 07:00:42,823 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 148 [2021-12-18 07:00:42,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:00:42,875 INFO L225 Difference]: With dead ends: 7281 [2021-12-18 07:00:42,876 INFO L226 Difference]: Without dead ends: 7278 [2021-12-18 07:00:42,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-12-18 07:00:42,879 INFO L933 BasicCegarLoop]: 1592 mSDtfsCounter, 2120 mSDsluCounter, 1344 mSDsCounter, 0 mSdLazyCounter, 5689 mSolverCounterSat, 1577 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2365 SdHoareTripleChecker+Valid, 2936 SdHoareTripleChecker+Invalid, 7267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1577 IncrementalHoareTripleChecker+Valid, 5689 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2021-12-18 07:00:42,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2365 Valid, 2936 Invalid, 7267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1577 Valid, 5689 Invalid, 1 Unknown, 0 Unchecked, 9.2s Time] [2021-12-18 07:00:42,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7278 states. [2021-12-18 07:00:43,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7278 to 6075. [2021-12-18 07:00:43,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6075 states, 4274 states have (on average 1.2802994852597098) internal successors, (5472), 4391 states have internal predecessors, (5472), 1374 states have call successors, (1374), 427 states have call predecessors, (1374), 426 states have return successors, (1377), 1344 states have call predecessors, (1377), 1373 states have call successors, (1377) [2021-12-18 07:00:43,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6075 states to 6075 states and 8223 transitions. [2021-12-18 07:00:43,083 INFO L78 Accepts]: Start accepts. Automaton has 6075 states and 8223 transitions. Word has length 148 [2021-12-18 07:00:43,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:00:43,084 INFO L470 AbstractCegarLoop]: Abstraction has 6075 states and 8223 transitions. [2021-12-18 07:00:43,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (14), 7 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2021-12-18 07:00:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 6075 states and 8223 transitions. [2021-12-18 07:00:43,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-18 07:00:43,092 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:00:43,092 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-12-18 07:00:43,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-18 07:00:43,093 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:00:43,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:00:43,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1736942858, now seen corresponding path program 1 times [2021-12-18 07:00:43,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:00:43,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368019750] [2021-12-18 07:00:43,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:00:43,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:00:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:00:43,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:43,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:43,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:00:43,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:00:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 07:00:43,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:43,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 07:00:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:43,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 07:00:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:43,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 07:00:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 07:00:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-18 07:00:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-18 07:00:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:43,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:43,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 07:00:43,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 07:00:43,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:00:43,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:00:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 07:00:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 07:00:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 07:00:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:00:43,351 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 07:00:43,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:00:43,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368019750] [2021-12-18 07:00:43,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368019750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:00:43,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:00:43,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 07:00:43,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583033532] [2021-12-18 07:00:43,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:00:43,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 07:00:43,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:00:43,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 07:00:43,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:00:43,353 INFO L87 Difference]: Start difference. First operand 6075 states and 8223 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 07:00:47,962 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 [] [2021-12-18 07:00:55,103 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:00:58,510 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:01,798 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.29s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:03,868 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:06,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:01:06,080 INFO L93 Difference]: Finished difference Result 16918 states and 23617 transitions. [2021-12-18 07:01:06,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 07:01:06,081 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 162 [2021-12-18 07:01:06,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:01:06,132 INFO L225 Difference]: With dead ends: 16918 [2021-12-18 07:01:06,132 INFO L226 Difference]: Without dead ends: 10863 [2021-12-18 07:01:06,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-12-18 07:01:06,154 INFO L933 BasicCegarLoop]: 1692 mSDtfsCounter, 5282 mSDsluCounter, 1977 mSDsCounter, 0 mSdLazyCounter, 8086 mSolverCounterSat, 4133 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5520 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 12223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4133 IncrementalHoareTripleChecker+Valid, 8086 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2021-12-18 07:01:06,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5520 Valid, 3669 Invalid, 12223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4133 Valid, 8086 Invalid, 4 Unknown, 0 Unchecked, 21.8s Time] [2021-12-18 07:01:06,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10863 states. [2021-12-18 07:01:06,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10863 to 8476. [2021-12-18 07:01:06,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8476 states, 6031 states have (on average 1.2895042281545348) internal successors, (7777), 6188 states have internal predecessors, (7777), 1831 states have call successors, (1831), 614 states have call predecessors, (1831), 613 states have return successors, (1834), 1789 states have call predecessors, (1834), 1830 states have call successors, (1834) [2021-12-18 07:01:06,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8476 states to 8476 states and 11442 transitions. [2021-12-18 07:01:06,619 INFO L78 Accepts]: Start accepts. Automaton has 8476 states and 11442 transitions. Word has length 162 [2021-12-18 07:01:06,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:01:06,619 INFO L470 AbstractCegarLoop]: Abstraction has 8476 states and 11442 transitions. [2021-12-18 07:01:06,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 3 states have internal predecessors, (86), 2 states have call successors, (23), 8 states have call predecessors, (23), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2021-12-18 07:01:06,620 INFO L276 IsEmpty]: Start isEmpty. Operand 8476 states and 11442 transitions. [2021-12-18 07:01:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2021-12-18 07:01:06,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:01:06,704 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:01:06,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-18 07:01:06,704 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:01:06,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:01:06,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1624923761, now seen corresponding path program 1 times [2021-12-18 07:01:06,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:01:06,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202560605] [2021-12-18 07:01:06,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:01:06,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:01:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:01:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:06,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:01:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:06,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 07:01:06,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 07:01:06,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 07:01:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 07:01:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 07:01:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2021-12-18 07:01:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2021-12-18 07:01:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2021-12-18 07:01:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 07:01:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 07:01:06,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 07:01:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:06,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:01:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 07:01:06,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 07:01:06,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 07:01:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:06,988 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-18 07:01:06,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:01:06,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202560605] [2021-12-18 07:01:06,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202560605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:01:06,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:01:06,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 07:01:06,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602791611] [2021-12-18 07:01:06,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:01:06,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 07:01:06,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:01:06,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 07:01:06,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2021-12-18 07:01:06,990 INFO L87 Difference]: Start difference. First operand 8476 states and 11442 transitions. Second operand has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 07:01:19,114 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:21,007 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.89s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:23,475 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:26,944 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:29,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:30,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:01:30,168 INFO L93 Difference]: Finished difference Result 22684 states and 31573 transitions. [2021-12-18 07:01:30,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 07:01:30,170 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) Word has length 212 [2021-12-18 07:01:30,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:01:30,223 INFO L225 Difference]: With dead ends: 22684 [2021-12-18 07:01:30,228 INFO L226 Difference]: Without dead ends: 14238 [2021-12-18 07:01:30,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2021-12-18 07:01:30,249 INFO L933 BasicCegarLoop]: 2703 mSDtfsCounter, 4476 mSDsluCounter, 2119 mSDsCounter, 0 mSdLazyCounter, 11115 mSolverCounterSat, 3906 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 4822 SdHoareTripleChecker+Invalid, 15025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3906 IncrementalHoareTripleChecker+Valid, 11115 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.1s IncrementalHoareTripleChecker+Time [2021-12-18 07:01:30,249 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4733 Valid, 4822 Invalid, 15025 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3906 Valid, 11115 Invalid, 4 Unknown, 0 Unchecked, 22.1s Time] [2021-12-18 07:01:30,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14238 states. [2021-12-18 07:01:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14238 to 10955. [2021-12-18 07:01:30,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10955 states, 7855 states have (on average 1.2935709739019732) internal successors, (10161), 8052 states have internal predecessors, (10161), 2286 states have call successors, (2286), 814 states have call predecessors, (2286), 813 states have return successors, (2289), 2232 states have call predecessors, (2289), 2285 states have call successors, (2289) [2021-12-18 07:01:30,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10955 states to 10955 states and 14736 transitions. [2021-12-18 07:01:30,816 INFO L78 Accepts]: Start accepts. Automaton has 10955 states and 14736 transitions. Word has length 212 [2021-12-18 07:01:30,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:01:30,817 INFO L470 AbstractCegarLoop]: Abstraction has 10955 states and 14736 transitions. [2021-12-18 07:01:30,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.777777777777779) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (25), 8 states have call predecessors, (25), 1 states have return successors, (23), 3 states have call predecessors, (23), 3 states have call successors, (23) [2021-12-18 07:01:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 10955 states and 14736 transitions. [2021-12-18 07:01:30,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2021-12-18 07:01:30,839 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:01:30,839 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:01:30,839 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-18 07:01:30,839 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:01:30,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:01:30,840 INFO L85 PathProgramCache]: Analyzing trace with hash 1119218623, now seen corresponding path program 1 times [2021-12-18 07:01:30,840 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:01:30,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023344812] [2021-12-18 07:01:30,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:01:30,840 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:01:30,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:01:30,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:30,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:01:30,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:30,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:30,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 07:01:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 07:01:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 07:01:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 07:01:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:31,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:31,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 07:01:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:31,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 07:01:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 07:01:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 07:01:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 07:01:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 07:01:31,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 07:01:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 07:01:31,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:01:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 07:01:31,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 07:01:31,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 07:01:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-18 07:01:31,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:01:31,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023344812] [2021-12-18 07:01:31,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023344812] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:01:31,145 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:01:31,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 07:01:31,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451083203] [2021-12-18 07:01:31,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:01:31,146 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 07:01:31,146 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:01:31,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 07:01:31,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-18 07:01:31,146 INFO L87 Difference]: Start difference. First operand 10955 states and 14736 transitions. Second operand has 10 states, 10 states have (on average 11.5) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 07:01:44,659 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 [] [2021-12-18 07:01:48,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:50,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:52,871 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:01:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:01:55,143 INFO L93 Difference]: Finished difference Result 29803 states and 41475 transitions. [2021-12-18 07:01:55,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 07:01:55,144 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 240 [2021-12-18 07:01:55,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:01:55,272 INFO L225 Difference]: With dead ends: 29803 [2021-12-18 07:01:55,272 INFO L226 Difference]: Without dead ends: 18878 [2021-12-18 07:01:55,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=124, Invalid=338, Unknown=0, NotChecked=0, Total=462 [2021-12-18 07:01:55,301 INFO L933 BasicCegarLoop]: 2914 mSDtfsCounter, 4380 mSDsluCounter, 3716 mSDsCounter, 0 mSdLazyCounter, 14363 mSolverCounterSat, 3826 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 6630 SdHoareTripleChecker+Invalid, 18192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3826 IncrementalHoareTripleChecker+Valid, 14363 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2021-12-18 07:01:55,301 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4614 Valid, 6630 Invalid, 18192 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3826 Valid, 14363 Invalid, 3 Unknown, 0 Unchecked, 22.6s Time] [2021-12-18 07:01:55,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18878 states. [2021-12-18 07:01:55,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18878 to 10961. [2021-12-18 07:01:55,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10961 states, 7861 states have (on average 1.2933469024297164) internal successors, (10167), 8058 states have internal predecessors, (10167), 2286 states have call successors, (2286), 814 states have call predecessors, (2286), 813 states have return successors, (2289), 2232 states have call predecessors, (2289), 2285 states have call successors, (2289) [2021-12-18 07:01:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10961 states to 10961 states and 14742 transitions. [2021-12-18 07:01:55,930 INFO L78 Accepts]: Start accepts. Automaton has 10961 states and 14742 transitions. Word has length 240 [2021-12-18 07:01:55,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:01:55,931 INFO L470 AbstractCegarLoop]: Abstraction has 10961 states and 14742 transitions. [2021-12-18 07:01:55,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.5) internal successors, (115), 4 states have internal predecessors, (115), 2 states have call successors, (26), 8 states have call predecessors, (26), 1 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-18 07:01:55,931 INFO L276 IsEmpty]: Start isEmpty. Operand 10961 states and 14742 transitions. [2021-12-18 07:01:55,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2021-12-18 07:01:55,957 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:01:55,957 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:01:55,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-18 07:01:55,957 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:01:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:01:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1006203854, now seen corresponding path program 1 times [2021-12-18 07:01:55,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:01:55,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518537868] [2021-12-18 07:01:55,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:01:55,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:01:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:01:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:01:56,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:56,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 07:01:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 07:01:56,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 07:01:56,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 07:01:56,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:56,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 07:01:56,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:56,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 07:01:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 07:01:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 07:01:56,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 07:01:56,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 07:01:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 07:01:56,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:01:56,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 07:01:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 07:01:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:01:56,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 07:01:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 07:01:56,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 07:01:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 238 [2021-12-18 07:01:56,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 244 [2021-12-18 07:01:56,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 250 [2021-12-18 07:01:56,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2021-12-18 07:01:56,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 275 [2021-12-18 07:01:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 281 [2021-12-18 07:01:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:01:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:01:56,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 07:01:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 07:01:56,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 07:01:56,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:01:56,368 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2021-12-18 07:01:56,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:01:56,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518537868] [2021-12-18 07:01:56,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518537868] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:01:56,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:01:56,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-18 07:01:56,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272737479] [2021-12-18 07:01:56,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:01:56,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 07:01:56,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:01:56,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 07:01:56,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-12-18 07:01:56,371 INFO L87 Difference]: Start difference. First operand 10961 states and 14742 transitions. Second operand has 12 states, 12 states have (on average 12.25) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (40), 11 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-18 07:02:09,982 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 [] [2021-12-18 07:02:11,838 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.86s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:02:14,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:02:14,810 INFO L93 Difference]: Finished difference Result 29173 states and 40527 transitions. [2021-12-18 07:02:14,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 07:02:14,810 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (40), 11 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) Word has length 319 [2021-12-18 07:02:14,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:02:14,878 INFO L225 Difference]: With dead ends: 29173 [2021-12-18 07:02:14,878 INFO L226 Difference]: Without dead ends: 18242 [2021-12-18 07:02:14,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=198, Invalid=452, Unknown=0, NotChecked=0, Total=650 [2021-12-18 07:02:14,908 INFO L933 BasicCegarLoop]: 2440 mSDtfsCounter, 4199 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 12366 mSolverCounterSat, 3919 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4430 SdHoareTripleChecker+Valid, 5257 SdHoareTripleChecker+Invalid, 16286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3919 IncrementalHoareTripleChecker+Valid, 12366 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2021-12-18 07:02:14,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4430 Valid, 5257 Invalid, 16286 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3919 Valid, 12366 Invalid, 1 Unknown, 0 Unchecked, 16.6s Time] [2021-12-18 07:02:14,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18242 states. [2021-12-18 07:02:16,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18242 to 13783. [2021-12-18 07:02:16,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13783 states, 9882 states have (on average 1.293665249949403) internal successors, (12784), 10139 states have internal predecessors, (12784), 2863 states have call successors, (2863), 1038 states have call predecessors, (2863), 1037 states have return successors, (2866), 2797 states have call predecessors, (2866), 2862 states have call successors, (2866) [2021-12-18 07:02:16,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13783 states to 13783 states and 18513 transitions. [2021-12-18 07:02:16,190 INFO L78 Accepts]: Start accepts. Automaton has 13783 states and 18513 transitions. Word has length 319 [2021-12-18 07:02:16,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:02:16,190 INFO L470 AbstractCegarLoop]: Abstraction has 13783 states and 18513 transitions. [2021-12-18 07:02:16,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 12.25) internal successors, (147), 3 states have internal predecessors, (147), 2 states have call successors, (40), 11 states have call predecessors, (40), 1 states have return successors, (38), 2 states have call predecessors, (38), 2 states have call successors, (38) [2021-12-18 07:02:16,191 INFO L276 IsEmpty]: Start isEmpty. Operand 13783 states and 18513 transitions. [2021-12-18 07:02:16,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2021-12-18 07:02:16,226 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:02:16,227 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:02:16,227 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-18 07:02:16,227 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:02:16,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:02:16,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1584495308, now seen corresponding path program 1 times [2021-12-18 07:02:16,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:02:16,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280256282] [2021-12-18 07:02:16,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:02:16,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:02:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:02:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:02:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:02:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:02:16,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 07:02:16,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 07:02:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 07:02:16,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 07:02:16,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:02:16,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 07:02:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:02:16,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 07:02:16,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 07:02:16,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 07:02:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 07:02:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 07:02:16,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 07:02:16,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:02:16,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 07:02:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 07:02:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:02:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 07:02:16,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 07:02:16,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 07:02:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 07:02:16,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:02:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:02:16,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:02:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 07:02:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 07:02:16,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-18 07:02:16,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-18 07:02:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 304 [2021-12-18 07:02:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 310 [2021-12-18 07:02:16,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2021-12-18 07:02:16,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 321 [2021-12-18 07:02:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 341 [2021-12-18 07:02:16,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2021-12-18 07:02:16,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:02:16,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:02:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 07:02:16,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 07:02:16,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 07:02:16,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:02:16,822 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-18 07:02:16,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:02:16,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280256282] [2021-12-18 07:02:16,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280256282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:02:16,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:02:16,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 07:02:16,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885309747] [2021-12-18 07:02:16,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:02:16,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 07:02:16,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:02:16,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 07:02:16,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-12-18 07:02:16,826 INFO L87 Difference]: Start difference. First operand 13783 states and 18513 transitions. Second operand has 16 states, 16 states have (on average 11.1875) internal successors, (179), 5 states have internal predecessors, (179), 5 states have call successors, (49), 13 states have call predecessors, (49), 3 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) [2021-12-18 07:02:33,269 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 [] [2021-12-18 07:02:35,335 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:02:37,412 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:02:45,060 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:02:47,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:02:49,781 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 [] [2021-12-18 07:03:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:03:11,194 INFO L93 Difference]: Finished difference Result 81171 states and 121910 transitions. [2021-12-18 07:03:11,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-18 07:03:11,195 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.1875) internal successors, (179), 5 states have internal predecessors, (179), 5 states have call successors, (49), 13 states have call predecessors, (49), 3 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) Word has length 385 [2021-12-18 07:03:11,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:03:11,747 INFO L225 Difference]: With dead ends: 81171 [2021-12-18 07:03:11,748 INFO L226 Difference]: Without dead ends: 67418 [2021-12-18 07:03:11,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 756 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-12-18 07:03:11,892 INFO L933 BasicCegarLoop]: 3389 mSDtfsCounter, 11789 mSDsluCounter, 2978 mSDsCounter, 0 mSdLazyCounter, 36942 mSolverCounterSat, 11268 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11973 SdHoareTripleChecker+Valid, 6367 SdHoareTripleChecker+Invalid, 48216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 11268 IncrementalHoareTripleChecker+Valid, 36942 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.2s IncrementalHoareTripleChecker+Time [2021-12-18 07:03:11,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11973 Valid, 6367 Invalid, 48216 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [11268 Valid, 36942 Invalid, 6 Unknown, 0 Unchecked, 48.2s Time] [2021-12-18 07:03:11,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67418 states. [2021-12-18 07:03:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67418 to 47417. [2021-12-18 07:03:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47417 states, 33886 states have (on average 1.2995927521690374) internal successors, (44038), 34919 states have internal predecessors, (44038), 10319 states have call successors, (10319), 2882 states have call predecessors, (10319), 3211 states have return successors, (12445), 10342 states have call predecessors, (12445), 10318 states have call successors, (12445) [2021-12-18 07:03:15,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47417 states to 47417 states and 66802 transitions. [2021-12-18 07:03:15,263 INFO L78 Accepts]: Start accepts. Automaton has 47417 states and 66802 transitions. Word has length 385 [2021-12-18 07:03:15,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:03:15,264 INFO L470 AbstractCegarLoop]: Abstraction has 47417 states and 66802 transitions. [2021-12-18 07:03:15,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.1875) internal successors, (179), 5 states have internal predecessors, (179), 5 states have call successors, (49), 13 states have call predecessors, (49), 3 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) [2021-12-18 07:03:15,265 INFO L276 IsEmpty]: Start isEmpty. Operand 47417 states and 66802 transitions. [2021-12-18 07:03:15,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2021-12-18 07:03:15,336 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:03:15,337 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:03:15,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 07:03:15,337 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:03:15,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:03:15,338 INFO L85 PathProgramCache]: Analyzing trace with hash -1969962594, now seen corresponding path program 1 times [2021-12-18 07:03:15,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:03:15,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675841743] [2021-12-18 07:03:15,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:03:15,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:03:15,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:03:15,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:03:15,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:03:15,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:03:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 07:03:15,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 07:03:15,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 07:03:15,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 07:03:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:03:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 07:03:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:03:15,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 07:03:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 07:03:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 07:03:15,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 07:03:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 07:03:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 07:03:15,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:03:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 07:03:15,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 07:03:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:03:15,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 07:03:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 07:03:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 07:03:15,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 07:03:15,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:03:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:03:15,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:03:15,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 07:03:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 07:03:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-18 07:03:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-18 07:03:15,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2021-12-18 07:03:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2021-12-18 07:03:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2021-12-18 07:03:15,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 322 [2021-12-18 07:03:15,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 342 [2021-12-18 07:03:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2021-12-18 07:03:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:03:15,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:03:15,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 07:03:15,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 07:03:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 07:03:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:03:15,876 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-18 07:03:15,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:03:15,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675841743] [2021-12-18 07:03:15,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675841743] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:03:15,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:03:15,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 07:03:15,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963303493] [2021-12-18 07:03:15,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:03:15,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 07:03:15,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:03:15,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 07:03:15,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-12-18 07:03:15,879 INFO L87 Difference]: Start difference. First operand 47417 states and 66802 transitions. Second operand has 16 states, 16 states have (on average 11.25) internal successors, (180), 5 states have internal predecessors, (180), 5 states have call successors, (49), 13 states have call predecessors, (49), 3 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) [2021-12-18 07:03:31,901 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 [] [2021-12-18 07:03:33,852 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.95s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:03:40,712 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:03:45,544 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.83s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:03:47,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:03:49,686 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:03:53,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-12-18 07:03:55,511 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 [] [2021-12-18 07:04:28,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 07:04:28,544 INFO L93 Difference]: Finished difference Result 270610 states and 446131 transitions. [2021-12-18 07:04:28,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-18 07:04:28,545 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 11.25) internal successors, (180), 5 states have internal predecessors, (180), 5 states have call successors, (49), 13 states have call predecessors, (49), 3 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) Word has length 386 [2021-12-18 07:04:28,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 07:04:31,463 INFO L225 Difference]: With dead ends: 270610 [2021-12-18 07:04:31,463 INFO L226 Difference]: Without dead ends: 223223 [2021-12-18 07:04:32,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 763 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=540, Invalid=2010, Unknown=0, NotChecked=0, Total=2550 [2021-12-18 07:04:32,179 INFO L933 BasicCegarLoop]: 3219 mSDtfsCounter, 14277 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 30608 mSolverCounterSat, 12933 mSolverCounterUnsat, 7 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 47.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14456 SdHoareTripleChecker+Valid, 5664 SdHoareTripleChecker+Invalid, 43548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 12933 IncrementalHoareTripleChecker+Valid, 30608 IncrementalHoareTripleChecker+Invalid, 7 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.9s IncrementalHoareTripleChecker+Time [2021-12-18 07:04:32,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14456 Valid, 5664 Invalid, 43548 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [12933 Valid, 30608 Invalid, 7 Unknown, 0 Unchecked, 52.9s Time] [2021-12-18 07:04:32,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223223 states. [2021-12-18 07:04:46,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223223 to 170133. [2021-12-18 07:04:46,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170133 states, 121553 states have (on average 1.3097002953444177) internal successors, (159198), 125436 states have internal predecessors, (159198), 38718 states have call successors, (38718), 8052 states have call predecessors, (38718), 9861 states have return successors, (67613), 39870 states have call predecessors, (67613), 38717 states have call successors, (67613) [2021-12-18 07:04:48,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170133 states to 170133 states and 265529 transitions. [2021-12-18 07:04:48,341 INFO L78 Accepts]: Start accepts. Automaton has 170133 states and 265529 transitions. Word has length 386 [2021-12-18 07:04:48,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 07:04:48,342 INFO L470 AbstractCegarLoop]: Abstraction has 170133 states and 265529 transitions. [2021-12-18 07:04:48,342 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 11.25) internal successors, (180), 5 states have internal predecessors, (180), 5 states have call successors, (49), 13 states have call predecessors, (49), 3 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47) [2021-12-18 07:04:48,342 INFO L276 IsEmpty]: Start isEmpty. Operand 170133 states and 265529 transitions. [2021-12-18 07:04:48,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2021-12-18 07:04:48,560 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 07:04:48,560 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 07:04:48,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-18 07:04:48,561 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 07:04:48,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 07:04:48,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1154294136, now seen corresponding path program 1 times [2021-12-18 07:04:48,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 07:04:48,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967660340] [2021-12-18 07:04:48,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 07:04:48,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 07:04:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:04:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:04:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2021-12-18 07:04:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:04:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-18 07:04:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-18 07:04:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-18 07:04:48,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 07:04:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:04:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 07:04:48,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:04:48,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 07:04:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 07:04:48,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 07:04:48,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2021-12-18 07:04:48,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 07:04:48,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-18 07:04:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 07:04:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 07:04:48,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2021-12-18 07:04:48,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:48,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 07:04:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 07:04:48,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2021-12-18 07:04:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2021-12-18 07:04:48,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2021-12-18 07:04:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:49,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:04:49,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 07:04:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 07:04:49,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 07:04:49,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-18 07:04:49,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 07:04:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 07:04:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 306 [2021-12-18 07:04:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 312 [2021-12-18 07:04:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2021-12-18 07:04:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 323 [2021-12-18 07:04:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:49,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 343 [2021-12-18 07:04:49,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2021-12-18 07:04:49,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 07:04:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-18 07:04:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 07:04:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 07:04:49,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2021-12-18 07:04:49,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 07:04:49,363 INFO L134 CoverageAnalysis]: Checked inductivity of 242 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2021-12-18 07:04:49,364 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 07:04:49,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967660340] [2021-12-18 07:04:49,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967660340] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 07:04:49,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 07:04:49,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-12-18 07:04:49,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022291403] [2021-12-18 07:04:49,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 07:04:49,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-12-18 07:04:49,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 07:04:49,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-12-18 07:04:49,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-12-18 07:04:49,366 INFO L87 Difference]: Start difference. First operand 170133 states and 265529 transitions. Second operand has 16 states, 16 states have (on average 11.3125) internal successors, (181), 5 states have internal predecessors, (181), 5 states have call successors, (49), 13 states have call predecessors, (49), 3 states have return successors, (47), 5 states have call predecessors, (47), 5 states have call successors, (47)