./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.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 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 23:45:40,996 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 23:45:40,999 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 23:45:41,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 23:45:41,044 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 23:45:41,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 23:45:41,047 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 23:45:41,049 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 23:45:41,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 23:45:41,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 23:45:41,055 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 23:45:41,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 23:45:41,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 23:45:41,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 23:45:41,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 23:45:41,062 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 23:45:41,063 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 23:45:41,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 23:45:41,066 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 23:45:41,071 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 23:45:41,073 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 23:45:41,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 23:45:41,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 23:45:41,075 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 23:45:41,076 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 23:45:41,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 23:45:41,083 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 23:45:41,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 23:45:41,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 23:45:41,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 23:45:41,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 23:45:41,086 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 23:45:41,087 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 23:45:41,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 23:45:41,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 23:45:41,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 23:45:41,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 23:45:41,089 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 23:45:41,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 23:45:41,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 23:45:41,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 23:45:41,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 23:45:41,093 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 23:45:41,121 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 23:45:41,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 23:45:41,122 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 23:45:41,123 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 23:45:41,123 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 23:45:41,123 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 23:45:41,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 23:45:41,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 23:45:41,124 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 23:45:41,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 23:45:41,126 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 23:45:41,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 23:45:41,126 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 23:45:41,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 23:45:41,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 23:45:41,127 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 23:45:41,127 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 23:45:41,127 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 23:45:41,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 23:45:41,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 23:45:41,128 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 23:45:41,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:45:41,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 23:45:41,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 23:45:41,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 23:45:41,129 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 23:45:41,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 23:45:41,129 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 23:45:41,129 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 23:45:41,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 23:45:41,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6037d9c0da39b47219c2a722405991c574e168b5c260e77abe20cfd9849699bc [2022-07-22 23:45:41,360 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 23:45:41,388 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 23:45:41,390 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 23:45:41,391 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 23:45:41,392 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 23:45:41,393 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2022-07-22 23:45:41,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8f6037b9/d5c86915f28544f8a8855d48d78f3911/FLAG68c081aa3 [2022-07-22 23:45:42,052 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 23:45:42,053 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2022-07-22 23:45:42,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8f6037b9/d5c86915f28544f8a8855d48d78f3911/FLAG68c081aa3 [2022-07-22 23:45:42,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a8f6037b9/d5c86915f28544f8a8855d48d78f3911 [2022-07-22 23:45:42,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 23:45:42,230 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 23:45:42,242 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 23:45:42,242 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 23:45:42,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 23:45:42,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:45:42" (1/1) ... [2022-07-22 23:45:42,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a05f05e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:42, skipping insertion in model container [2022-07-22 23:45:42,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 11:45:42" (1/1) ... [2022-07-22 23:45:42,251 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 23:45:42,359 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 23:45:43,039 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2022-07-22 23:45:43,557 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:45:43,573 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 23:45:43,630 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-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i[158583,158596] [2022-07-22 23:45:43,767 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 23:45:43,827 INFO L208 MainTranslator]: Completed translation [2022-07-22 23:45:43,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43 WrapperNode [2022-07-22 23:45:43,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 23:45:43,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 23:45:43,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 23:45:43,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 23:45:43,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:43,902 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:44,027 INFO L137 Inliner]: procedures = 220, calls = 1799, calls flagged for inlining = 81, calls inlined = 72, statements flattened = 3230 [2022-07-22 23:45:44,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 23:45:44,029 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 23:45:44,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 23:45:44,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 23:45:44,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:44,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:44,057 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:44,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:44,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:44,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:44,195 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:44,215 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 23:45:44,216 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 23:45:44,217 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 23:45:44,217 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 23:45:44,218 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (1/1) ... [2022-07-22 23:45:44,236 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 23:45:44,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:45:44,300 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-22 23:45:44,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-22 23:45:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure nla_get_u32 [2022-07-22 23:45:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_get_u32 [2022-07-22 23:45:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_xmit [2022-07-22 23:45:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_xmit [2022-07-22 23:45:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-07-22 23:45:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-07-22 23:45:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2022-07-22 23:45:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2022-07-22 23:45:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure nla_put_u32 [2022-07-22 23:45:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure nla_put_u32 [2022-07-22 23:45:44,331 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_start_tx [2022-07-22 23:45:44,331 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_start_tx [2022-07-22 23:45:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-22 23:45:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-22 23:45:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure destroy_workqueue [2022-07-22 23:45:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure destroy_workqueue [2022-07-22 23:45:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure skb_copy_bits [2022-07-22 23:45:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_copy_bits [2022-07-22 23:45:44,332 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_unlock [2022-07-22 23:45:44,332 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_unlock [2022-07-22 23:45:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2022-07-22 23:45:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2022-07-22 23:45:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure dump_stack [2022-07-22 23:45:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure dump_stack [2022-07-22 23:45:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-22 23:45:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-22 23:45:44,333 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_release_4 [2022-07-22 23:45:44,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_release_4 [2022-07-22 23:45:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure clear_bit [2022-07-22 23:45:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure clear_bit [2022-07-22 23:45:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-07-22 23:45:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-07-22 23:45:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 23:45:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 23:45:44,334 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-22 23:45:44,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-22 23:45:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure spinlock_check [2022-07-22 23:45:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure spinlock_check [2022-07-22 23:45:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_fill_info [2022-07-22 23:45:44,335 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_fill_info [2022-07-22 23:45:44,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 23:45:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure INIT_LIST_HEAD [2022-07-22 23:45:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure INIT_LIST_HEAD [2022-07-22 23:45:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc [2022-07-22 23:45:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc [2022-07-22 23:45:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_update_aggregation_stats [2022-07-22 23:45:44,336 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_update_aggregation_stats [2022-07-22 23:45:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 23:45:44,336 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2022-07-22 23:45:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2022-07-22 23:45:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 23:45:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_frm [2022-07-22 23:45:44,337 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_frm [2022-07-22 23:45:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 23:45:44,337 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2022-07-22 23:45:44,338 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2022-07-22 23:45:44,338 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_dequeue [2022-07-22 23:45:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_dequeue [2022-07-22 23:45:44,339 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2022-07-22 23:45:44,339 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2022-07-22 23:45:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure lockdep_init_map [2022-07-22 23:45:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure lockdep_init_map [2022-07-22 23:45:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure spin_unlock_bh [2022-07-22 23:45:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_unlock_bh [2022-07-22 23:45:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_desc_len [2022-07-22 23:45:44,340 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_desc_len [2022-07-22 23:45:44,340 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-07-22 23:45:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2022-07-22 23:45:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2022-07-22 23:45:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_tx_queue_len [2022-07-22 23:45:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_tx_queue_len [2022-07-22 23:45:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure __raw_spin_lock_init [2022-07-22 23:45:44,341 INFO L138 BoogieDeclarations]: Found implementation of procedure __raw_spin_lock_init [2022-07-22 23:45:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-07-22 23:45:44,341 INFO L130 BoogieDeclarations]: Found specification of procedure activate_pending_timer_1 [2022-07-22 23:45:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_pending_timer_1 [2022-07-22 23:45:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 23:45:44,342 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_21 [2022-07-22 23:45:44,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_21 [2022-07-22 23:45:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure del_timer_sync [2022-07-22 23:45:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure del_timer_sync [2022-07-22 23:45:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-07-22 23:45:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-07-22 23:45:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free [2022-07-22 23:45:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free [2022-07-22 23:45:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure constant_test_bit [2022-07-22 23:45:44,343 INFO L138 BoogieDeclarations]: Found implementation of procedure constant_test_bit [2022-07-22 23:45:44,343 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_get_size [2022-07-22 23:45:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_get_size [2022-07-22 23:45:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_netlink_parms [2022-07-22 23:45:44,344 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_netlink_parms [2022-07-22 23:45:44,344 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_to_wait_event [2022-07-22 23:45:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_to_wait_event [2022-07-22 23:45:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2022-07-22 23:45:44,345 INFO L138 BoogieDeclarations]: Found implementation of procedure kfree [2022-07-22 23:45:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 23:45:44,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2022-07-22 23:45:44,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2022-07-22 23:45:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 23:45:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure disable_suitable_timer_1 [2022-07-22 23:45:44,346 INFO L138 BoogieDeclarations]: Found implementation of procedure disable_suitable_timer_1 [2022-07-22 23:45:44,346 INFO L130 BoogieDeclarations]: Found specification of procedure test_and_set_bit [2022-07-22 23:45:44,347 INFO L138 BoogieDeclarations]: Found implementation of procedure test_and_set_bit [2022-07-22 23:45:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2022-07-22 23:45:44,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2022-07-22 23:45:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 23:45:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-07-22 23:45:44,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-07-22 23:45:44,347 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_changelink [2022-07-22 23:45:44,347 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_changelink [2022-07-22 23:45:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 23:45:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2022-07-22 23:45:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure reg_timer_1 [2022-07-22 23:45:44,348 INFO L138 BoogieDeclarations]: Found implementation of procedure reg_timer_1 [2022-07-22 23:45:44,348 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:45:44,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-22 23:45:44,349 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_lock [2022-07-22 23:45:44,349 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_lock [2022-07-22 23:45:44,350 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_open [2022-07-22 23:45:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_open [2022-07-22 23:45:44,351 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_rx_done [2022-07-22 23:45:44,351 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_rx_done [2022-07-22 23:45:44,352 INFO L130 BoogieDeclarations]: Found specification of procedure mod_timer [2022-07-22 23:45:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure mod_timer [2022-07-22 23:45:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure rtnl_is_locked [2022-07-22 23:45:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure rtnl_is_locked [2022-07-22 23:45:44,353 INFO L130 BoogieDeclarations]: Found specification of procedure __init_work [2022-07-22 23:45:44,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_work [2022-07-22 23:45:44,357 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_can_send_aggregate [2022-07-22 23:45:44,357 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_can_send_aggregate [2022-07-22 23:45:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure warn_slowpath_null [2022-07-22 23:45:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure warn_slowpath_null [2022-07-22 23:45:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2022-07-22 23:45:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_put [2022-07-22 23:45:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:45:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-22 23:45:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~TO~VOID [2022-07-22 23:45:44,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~TO~VOID [2022-07-22 23:45:44,358 INFO L130 BoogieDeclarations]: Found specification of procedure __init_waitqueue_head [2022-07-22 23:45:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure __init_waitqueue_head [2022-07-22 23:45:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure set_bit [2022-07-22 23:45:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure set_bit [2022-07-22 23:45:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure caif_hsi_newlink [2022-07-22 23:45:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure caif_hsi_newlink [2022-07-22 23:45:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure schedule_timeout [2022-07-22 23:45:44,359 INFO L138 BoogieDeclarations]: Found implementation of procedure schedule_timeout [2022-07-22 23:45:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 23:45:44,359 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2022-07-22 23:45:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2022-07-22 23:45:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_close [2022-07-22 23:45:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_close [2022-07-22 23:45:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure queue_work [2022-07-22 23:45:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure queue_work [2022-07-22 23:45:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure cfhsi_abort_tx [2022-07-22 23:45:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure cfhsi_abort_tx [2022-07-22 23:45:44,360 INFO L130 BoogieDeclarations]: Found specification of procedure finish_wait [2022-07-22 23:45:44,360 INFO L138 BoogieDeclarations]: Found implementation of procedure finish_wait [2022-07-22 23:45:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 23:45:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 23:45:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure spin_lock_bh [2022-07-22 23:45:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure spin_lock_bh [2022-07-22 23:45:44,361 INFO L130 BoogieDeclarations]: Found specification of procedure preempt_count [2022-07-22 23:45:44,361 INFO L138 BoogieDeclarations]: Found implementation of procedure preempt_count [2022-07-22 23:45:44,889 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 23:45:44,891 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 23:45:45,392 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint ldv_stopFINAL: assume true; [2022-07-22 23:45:47,166 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 23:45:47,178 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 23:45:47,179 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-07-22 23:45:47,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:45:47 BoogieIcfgContainer [2022-07-22 23:45:47,182 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 23:45:47,183 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 23:45:47,183 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 23:45:47,187 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 23:45:47,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 11:45:42" (1/3) ... [2022-07-22 23:45:47,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a129d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:45:47, skipping insertion in model container [2022-07-22 23:45:47,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 11:45:43" (2/3) ... [2022-07-22 23:45:47,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a129d4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 11:45:47, skipping insertion in model container [2022-07-22 23:45:47,188 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 11:45:47" (3/3) ... [2022-07-22 23:45:47,189 INFO L111 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--caif--caif_hsi.ko-entry_point.cil.out.i [2022-07-22 23:45:47,201 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 23:45:47,202 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 23:45:47,259 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 23:45:47,264 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@20bbda15, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@78ec7021 [2022-07-22 23:45:47,264 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 23:45:47,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 1087 states, 758 states have (on average 1.3364116094986807) internal successors, (1013), 777 states have internal predecessors, (1013), 255 states have call successors, (255), 73 states have call predecessors, (255), 72 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) [2022-07-22 23:45:47,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2022-07-22 23:45:47,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:47,284 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:47,285 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:47,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:47,289 INFO L85 PathProgramCache]: Analyzing trace with hash 201705276, now seen corresponding path program 1 times [2022-07-22 23:45:47,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:47,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12683604] [2022-07-22 23:45:47,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:47,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:47,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:47,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:47,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-22 23:45:47,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:47,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12683604] [2022-07-22 23:45:47,874 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12683604] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:47,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:47,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 23:45:47,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205787679] [2022-07-22 23:45:47,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:47,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 23:45:47,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:47,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 23:45:47,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 23:45:47,911 INFO L87 Difference]: Start difference. First operand has 1087 states, 758 states have (on average 1.3364116094986807) internal successors, (1013), 777 states have internal predecessors, (1013), 255 states have call successors, (255), 73 states have call predecessors, (255), 72 states have return successors, (251), 251 states have call predecessors, (251), 251 states have call successors, (251) Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:45:52,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:45:52,133 INFO L93 Difference]: Finished difference Result 3554 states and 5253 transitions. [2022-07-22 23:45:52,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:45:52,135 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2022-07-22 23:45:52,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:45:52,169 INFO L225 Difference]: With dead ends: 3554 [2022-07-22 23:45:52,169 INFO L226 Difference]: Without dead ends: 2437 [2022-07-22 23:45:52,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:45:52,198 INFO L413 NwaCegarLoop]: 1846 mSDtfsCounter, 2075 mSDsluCounter, 4705 mSDsCounter, 0 mSdLazyCounter, 2622 mSolverCounterSat, 729 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2268 SdHoareTripleChecker+Valid, 6551 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 729 IncrementalHoareTripleChecker+Valid, 2622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:45:52,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2268 Valid, 6551 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [729 Valid, 2622 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-22 23:45:52,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2437 states. [2022-07-22 23:45:52,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2437 to 2233. [2022-07-22 23:45:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2233 states, 1564 states have (on average 1.3241687979539642) internal successors, (2071), 1597 states have internal predecessors, (2071), 518 states have call successors, (518), 141 states have call predecessors, (518), 150 states have return successors, (587), 523 states have call predecessors, (587), 517 states have call successors, (587) [2022-07-22 23:45:52,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2233 states to 2233 states and 3176 transitions. [2022-07-22 23:45:52,383 INFO L78 Accepts]: Start accepts. Automaton has 2233 states and 3176 transitions. Word has length 39 [2022-07-22 23:45:52,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:45:52,384 INFO L495 AbstractCegarLoop]: Abstraction has 2233 states and 3176 transitions. [2022-07-22 23:45:52,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-07-22 23:45:52,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2233 states and 3176 transitions. [2022-07-22 23:45:52,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-22 23:45:52,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:45:52,394 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:45:52,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 23:45:52,395 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:45:52,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:45:52,395 INFO L85 PathProgramCache]: Analyzing trace with hash -2097784552, now seen corresponding path program 1 times [2022-07-22 23:45:52,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:45:52,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587920116] [2022-07-22 23:45:52,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:45:52,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:45:52,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:45:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:45:52,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:45:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:45:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:45:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:45:52,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:52,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:45:52,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:45:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:45:52,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:45:52,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 23:45:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:45:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 23:45:52,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:45:52,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587920116] [2022-07-22 23:45:52,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587920116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:45:52,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:45:52,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:45:52,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255876245] [2022-07-22 23:45:52,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:45:52,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:45:52,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:45:52,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:45:52,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:45:52,948 INFO L87 Difference]: Start difference. First operand 2233 states and 3176 transitions. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:45:55,946 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.67s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:46:02,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:02,219 INFO L93 Difference]: Finished difference Result 4862 states and 7173 transitions. [2022-07-22 23:46:02,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-22 23:46:02,219 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 126 [2022-07-22 23:46:02,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:02,230 INFO L225 Difference]: With dead ends: 4862 [2022-07-22 23:46:02,230 INFO L226 Difference]: Without dead ends: 2639 [2022-07-22 23:46:02,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2022-07-22 23:46:02,238 INFO L413 NwaCegarLoop]: 1512 mSDtfsCounter, 473 mSDsluCounter, 8052 mSDsCounter, 0 mSdLazyCounter, 7252 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 534 SdHoareTripleChecker+Valid, 9564 SdHoareTripleChecker+Invalid, 7574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 7252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:02,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [534 Valid, 9564 Invalid, 7574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 7252 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-07-22 23:46:02,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2022-07-22 23:46:02,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2261. [2022-07-22 23:46:02,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2261 states, 1586 states have (on average 1.3209331651954603) internal successors, (2095), 1620 states have internal predecessors, (2095), 518 states have call successors, (518), 141 states have call predecessors, (518), 156 states have return successors, (612), 528 states have call predecessors, (612), 517 states have call successors, (612) [2022-07-22 23:46:02,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2261 states to 2261 states and 3225 transitions. [2022-07-22 23:46:02,303 INFO L78 Accepts]: Start accepts. Automaton has 2261 states and 3225 transitions. Word has length 126 [2022-07-22 23:46:02,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:02,305 INFO L495 AbstractCegarLoop]: Abstraction has 2261 states and 3225 transitions. [2022-07-22 23:46:02,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 7 states have internal predecessors, (82), 2 states have call successors, (16), 6 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-22 23:46:02,305 INFO L276 IsEmpty]: Start isEmpty. Operand 2261 states and 3225 transitions. [2022-07-22 23:46:02,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-07-22 23:46:02,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:02,311 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:46:02,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-22 23:46:02,311 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:02,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:02,311 INFO L85 PathProgramCache]: Analyzing trace with hash 885987727, now seen corresponding path program 1 times [2022-07-22 23:46:02,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:02,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606821151] [2022-07-22 23:46:02,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:02,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:02,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:02,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:02,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:02,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:46:02,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:46:02,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:02,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:02,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 23:46:02,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:46:02,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:46:02,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:46:02,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:02,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606821151] [2022-07-22 23:46:02,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606821151] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:46:02,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1109817032] [2022-07-22 23:46:02,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:02,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:46:02,705 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:46:02,733 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:46:02,734 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 23:46:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:03,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:46:03,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:46:03,400 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 23:46:03,404 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:46:03,552 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:46:03,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1109817032] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:46:03,552 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:46:03,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 4, 4] total 10 [2022-07-22 23:46:03,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412787372] [2022-07-22 23:46:03,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:46:03,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:46:03,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:03,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:46:03,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:46:03,556 INFO L87 Difference]: Start difference. First operand 2261 states and 3225 transitions. Second operand has 10 states, 10 states have (on average 10.1) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 23:46:06,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:06,985 INFO L93 Difference]: Finished difference Result 4966 states and 7355 transitions. [2022-07-22 23:46:06,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-22 23:46:06,986 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 130 [2022-07-22 23:46:06,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:07,020 INFO L225 Difference]: With dead ends: 4966 [2022-07-22 23:46:07,021 INFO L226 Difference]: Without dead ends: 2715 [2022-07-22 23:46:07,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 299 GetRequests, 287 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:46:07,035 INFO L413 NwaCegarLoop]: 1536 mSDtfsCounter, 846 mSDsluCounter, 2193 mSDsCounter, 0 mSdLazyCounter, 1976 mSolverCounterSat, 665 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 909 SdHoareTripleChecker+Valid, 3729 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 665 IncrementalHoareTripleChecker+Valid, 1976 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:07,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [909 Valid, 3729 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [665 Valid, 1976 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 23:46:07,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2715 states. [2022-07-22 23:46:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2715 to 2333. [2022-07-22 23:46:07,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2333 states, 1650 states have (on average 1.312121212121212) internal successors, (2165), 1677 states have internal predecessors, (2165), 526 states have call successors, (526), 141 states have call predecessors, (526), 156 states have return successors, (639), 543 states have call predecessors, (639), 525 states have call successors, (639) [2022-07-22 23:46:07,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2333 states to 2333 states and 3330 transitions. [2022-07-22 23:46:07,147 INFO L78 Accepts]: Start accepts. Automaton has 2333 states and 3330 transitions. Word has length 130 [2022-07-22 23:46:07,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:07,147 INFO L495 AbstractCegarLoop]: Abstraction has 2333 states and 3330 transitions. [2022-07-22 23:46:07,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.1) internal successors, (101), 6 states have internal predecessors, (101), 4 states have call successors, (29), 6 states have call predecessors, (29), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 23:46:07,147 INFO L276 IsEmpty]: Start isEmpty. Operand 2333 states and 3330 transitions. [2022-07-22 23:46:07,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 23:46:07,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:07,161 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2022-07-22 23:46:07,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-22 23:46:07,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:46:07,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:07,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:07,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1600831573, now seen corresponding path program 1 times [2022-07-22 23:46:07,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:07,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943879365] [2022-07-22 23:46:07,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:07,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:07,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:07,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:46:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:07,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:07,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:07,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:46:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 23:46:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:46:07,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-22 23:46:07,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:07,892 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:46:07,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:07,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943879365] [2022-07-22 23:46:07,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943879365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:07,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:07,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-22 23:46:07,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279273115] [2022-07-22 23:46:07,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:07,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 23:46:07,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:07,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 23:46:07,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:46:07,894 INFO L87 Difference]: Start difference. First operand 2333 states and 3330 transitions. Second operand has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 23:46:13,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:13,281 INFO L93 Difference]: Finished difference Result 5060 states and 7438 transitions. [2022-07-22 23:46:13,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:46:13,282 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) Word has length 133 [2022-07-22 23:46:13,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:13,294 INFO L225 Difference]: With dead ends: 5060 [2022-07-22 23:46:13,294 INFO L226 Difference]: Without dead ends: 2737 [2022-07-22 23:46:13,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:46:13,301 INFO L413 NwaCegarLoop]: 1533 mSDtfsCounter, 815 mSDsluCounter, 6804 mSDsCounter, 0 mSdLazyCounter, 5917 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 898 SdHoareTripleChecker+Valid, 8337 SdHoareTripleChecker+Invalid, 6556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 5917 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:13,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [898 Valid, 8337 Invalid, 6556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 5917 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-22 23:46:13,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2737 states. [2022-07-22 23:46:13,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2737 to 2351. [2022-07-22 23:46:13,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2351 states, 1666 states have (on average 1.3103241296518608) internal successors, (2183), 1693 states have internal predecessors, (2183), 526 states have call successors, (526), 141 states have call predecessors, (526), 158 states have return successors, (648), 545 states have call predecessors, (648), 525 states have call successors, (648) [2022-07-22 23:46:13,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2351 states to 2351 states and 3357 transitions. [2022-07-22 23:46:13,378 INFO L78 Accepts]: Start accepts. Automaton has 2351 states and 3357 transitions. Word has length 133 [2022-07-22 23:46:13,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:13,378 INFO L495 AbstractCegarLoop]: Abstraction has 2351 states and 3357 transitions. [2022-07-22 23:46:13,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.166666666666667) internal successors, (86), 6 states have internal predecessors, (86), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 23:46:13,378 INFO L276 IsEmpty]: Start isEmpty. Operand 2351 states and 3357 transitions. [2022-07-22 23:46:13,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-07-22 23:46:13,384 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:13,384 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:46:13,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-22 23:46:13,384 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:13,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:13,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1436537290, now seen corresponding path program 1 times [2022-07-22 23:46:13,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:13,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1953222951] [2022-07-22 23:46:13,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:13,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:13,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:13,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:13,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:46:13,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:13,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:46:13,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:46:13,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:46:13,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 23:46:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:46:13,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 23:46:13,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:46:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:46:13,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:13,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:13,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:13,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:46:13,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 23:46:13,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:13,636 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-22 23:46:13,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:13,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1953222951] [2022-07-22 23:46:13,637 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1953222951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:13,637 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:13,637 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:46:13,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928503474] [2022-07-22 23:46:13,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:13,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:46:13,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:13,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:46:13,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:46:13,639 INFO L87 Difference]: Start difference. First operand 2351 states and 3357 transitions. Second operand has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 23:46:18,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:18,499 INFO L93 Difference]: Finished difference Result 6763 states and 9755 transitions. [2022-07-22 23:46:18,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:46:18,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 162 [2022-07-22 23:46:18,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:18,519 INFO L225 Difference]: With dead ends: 6763 [2022-07-22 23:46:18,519 INFO L226 Difference]: Without dead ends: 4422 [2022-07-22 23:46:18,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=79, Unknown=0, NotChecked=0, Total=132 [2022-07-22 23:46:18,527 INFO L413 NwaCegarLoop]: 1627 mSDtfsCounter, 2182 mSDsluCounter, 2940 mSDsCounter, 0 mSdLazyCounter, 2549 mSolverCounterSat, 1067 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2343 SdHoareTripleChecker+Valid, 4567 SdHoareTripleChecker+Invalid, 3616 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1067 IncrementalHoareTripleChecker+Valid, 2549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:18,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2343 Valid, 4567 Invalid, 3616 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1067 Valid, 2549 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-22 23:46:18,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4422 states. [2022-07-22 23:46:18,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4422 to 3858. [2022-07-22 23:46:18,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3858 states, 2796 states have (on average 1.3204577968526467) internal successors, (3692), 2833 states have internal predecessors, (3692), 795 states have call successors, (795), 235 states have call predecessors, (795), 266 states have return successors, (991), 832 states have call predecessors, (991), 794 states have call successors, (991) [2022-07-22 23:46:18,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3858 states to 3858 states and 5478 transitions. [2022-07-22 23:46:18,748 INFO L78 Accepts]: Start accepts. Automaton has 3858 states and 5478 transitions. Word has length 162 [2022-07-22 23:46:18,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:18,748 INFO L495 AbstractCegarLoop]: Abstraction has 3858 states and 5478 transitions. [2022-07-22 23:46:18,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.0) internal successors, (105), 3 states have internal predecessors, (105), 2 states have call successors, (20), 6 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2022-07-22 23:46:18,749 INFO L276 IsEmpty]: Start isEmpty. Operand 3858 states and 5478 transitions. [2022-07-22 23:46:18,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-22 23:46:18,755 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:18,755 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2022-07-22 23:46:18,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 23:46:18,755 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:18,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:18,756 INFO L85 PathProgramCache]: Analyzing trace with hash 716705549, now seen corresponding path program 1 times [2022-07-22 23:46:18,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:18,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481586289] [2022-07-22 23:46:18,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:18,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:18,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:18,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:46:18,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:18,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:18,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:18,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:18,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:46:18,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:18,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:18,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:19,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:19,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:19,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:19,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:19,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:46:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:46:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:19,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:46:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-22 23:46:19,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:19,025 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:46:19,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:19,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481586289] [2022-07-22 23:46:19,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481586289] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:19,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:19,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:46:19,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665132062] [2022-07-22 23:46:19,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:19,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:46:19,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:19,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:46:19,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:46:19,028 INFO L87 Difference]: Start difference. First operand 3858 states and 5478 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 23:46:20,760 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.23s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:46:23,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:23,624 INFO L93 Difference]: Finished difference Result 8288 states and 12057 transitions. [2022-07-22 23:46:23,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:46:23,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 148 [2022-07-22 23:46:23,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:23,659 INFO L225 Difference]: With dead ends: 8288 [2022-07-22 23:46:23,660 INFO L226 Difference]: Without dead ends: 4440 [2022-07-22 23:46:23,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:46:23,674 INFO L413 NwaCegarLoop]: 1518 mSDtfsCounter, 518 mSDsluCounter, 1888 mSDsCounter, 0 mSdLazyCounter, 2196 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 3406 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 2196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:23,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [592 Valid, 3406 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 2196 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-22 23:46:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4440 states. [2022-07-22 23:46:23,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4440 to 3882. [2022-07-22 23:46:23,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3882 states, 2816 states have (on average 1.3196022727272727) internal successors, (3716), 2853 states have internal predecessors, (3716), 799 states have call successors, (799), 235 states have call predecessors, (799), 266 states have return successors, (1005), 836 states have call predecessors, (1005), 798 states have call successors, (1005) [2022-07-22 23:46:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3882 states to 3882 states and 5520 transitions. [2022-07-22 23:46:23,850 INFO L78 Accepts]: Start accepts. Automaton has 3882 states and 5520 transitions. Word has length 148 [2022-07-22 23:46:23,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:23,851 INFO L495 AbstractCegarLoop]: Abstraction has 3882 states and 5520 transitions. [2022-07-22 23:46:23,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-22 23:46:23,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3882 states and 5520 transitions. [2022-07-22 23:46:23,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-22 23:46:23,860 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:23,860 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2022-07-22 23:46:23,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 23:46:23,861 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:23,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:23,861 INFO L85 PathProgramCache]: Analyzing trace with hash 881327446, now seen corresponding path program 1 times [2022-07-22 23:46:23,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:23,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958755385] [2022-07-22 23:46:23,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:23,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:23,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:24,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:24,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:46:24,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:24,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:46:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:24,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:46:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:24,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:46:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:24,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 23:46:24,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 23:46:24,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:46:24,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:46:24,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:46:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:24,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 23:46:24,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:24,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958755385] [2022-07-22 23:46:24,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958755385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:24,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:24,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:46:24,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181832558] [2022-07-22 23:46:24,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:24,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:46:24,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:24,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:46:24,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:46:24,349 INFO L87 Difference]: Start difference. First operand 3882 states and 5520 transitions. Second operand has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 23:46:34,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:34,424 INFO L93 Difference]: Finished difference Result 13448 states and 19801 transitions. [2022-07-22 23:46:34,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-22 23:46:34,424 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 173 [2022-07-22 23:46:34,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:34,468 INFO L225 Difference]: With dead ends: 13448 [2022-07-22 23:46:34,468 INFO L226 Difference]: Without dead ends: 9576 [2022-07-22 23:46:34,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-07-22 23:46:34,484 INFO L413 NwaCegarLoop]: 2176 mSDtfsCounter, 3381 mSDsluCounter, 5225 mSDsCounter, 0 mSdLazyCounter, 6665 mSolverCounterSat, 2091 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 7401 SdHoareTripleChecker+Invalid, 8756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2091 IncrementalHoareTripleChecker+Valid, 6665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:34,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3625 Valid, 7401 Invalid, 8756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2091 Valid, 6665 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-07-22 23:46:34,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9576 states. [2022-07-22 23:46:34,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9576 to 7988. [2022-07-22 23:46:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7988 states, 5793 states have (on average 1.3188330744001382) internal successors, (7640), 5889 states have internal predecessors, (7640), 1646 states have call successors, (1646), 461 states have call predecessors, (1646), 548 states have return successors, (2273), 1733 states have call predecessors, (2273), 1645 states have call successors, (2273) [2022-07-22 23:46:34,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7988 states to 7988 states and 11559 transitions. [2022-07-22 23:46:34,887 INFO L78 Accepts]: Start accepts. Automaton has 7988 states and 11559 transitions. Word has length 173 [2022-07-22 23:46:34,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:34,888 INFO L495 AbstractCegarLoop]: Abstraction has 7988 states and 11559 transitions. [2022-07-22 23:46:34,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 12.777777777777779) internal successors, (115), 4 states have internal predecessors, (115), 4 states have call successors, (20), 7 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-22 23:46:34,888 INFO L276 IsEmpty]: Start isEmpty. Operand 7988 states and 11559 transitions. [2022-07-22 23:46:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-07-22 23:46:34,906 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:34,906 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 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] [2022-07-22 23:46:34,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-22 23:46:34,906 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:34,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1295827298, now seen corresponding path program 1 times [2022-07-22 23:46:34,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:34,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103106372] [2022-07-22 23:46:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:34,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:34,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:35,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:35,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:46:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:46:35,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:46:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:35,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:46:35,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:35,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 23:46:35,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 23:46:35,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:46:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:46:35,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:46:35,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:35,377 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 23:46:35,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:35,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103106372] [2022-07-22 23:46:35,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103106372] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:46:35,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1046155981] [2022-07-22 23:46:35,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:35,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:46:35,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:46:35,392 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:46:35,393 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 23:46:36,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:36,056 INFO L263 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:46:36,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:46:36,074 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-22 23:46:36,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:46:36,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1046155981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:36,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:46:36,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [14] total 15 [2022-07-22 23:46:36,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329031634] [2022-07-22 23:46:36,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:36,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:46:36,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:36,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:46:36,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:46:36,077 INFO L87 Difference]: Start difference. First operand 7988 states and 11559 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:46:36,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:36,376 INFO L93 Difference]: Finished difference Result 15974 states and 23222 transitions. [2022-07-22 23:46:36,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:46:36,376 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 178 [2022-07-22 23:46:36,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:36,409 INFO L225 Difference]: With dead ends: 15974 [2022-07-22 23:46:36,410 INFO L226 Difference]: Without dead ends: 7996 [2022-07-22 23:46:36,433 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:46:36,433 INFO L413 NwaCegarLoop]: 1495 mSDtfsCounter, 0 mSDsluCounter, 1491 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2986 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:36,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2986 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:46:36,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7996 states. [2022-07-22 23:46:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7996 to 7996. [2022-07-22 23:46:36,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7996 states, 5801 states have (on average 1.3183933804516463) internal successors, (7648), 5897 states have internal predecessors, (7648), 1646 states have call successors, (1646), 461 states have call predecessors, (1646), 548 states have return successors, (2273), 1733 states have call predecessors, (2273), 1645 states have call successors, (2273) [2022-07-22 23:46:36,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7996 states to 7996 states and 11567 transitions. [2022-07-22 23:46:36,699 INFO L78 Accepts]: Start accepts. Automaton has 7996 states and 11567 transitions. Word has length 178 [2022-07-22 23:46:36,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:36,700 INFO L495 AbstractCegarLoop]: Abstraction has 7996 states and 11567 transitions. [2022-07-22 23:46:36,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2022-07-22 23:46:36,700 INFO L276 IsEmpty]: Start isEmpty. Operand 7996 states and 11567 transitions. [2022-07-22 23:46:36,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-07-22 23:46:36,714 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:36,714 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 4, 3, 3, 3, 3, 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] [2022-07-22 23:46:36,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-22 23:46:36,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-22 23:46:36,933 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:36,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:36,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1479276519, now seen corresponding path program 1 times [2022-07-22 23:46:36,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:36,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775151316] [2022-07-22 23:46:36,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:36,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:37,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:37,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:46:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:46:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 23:46:37,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:46:37,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:37,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:37,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:46:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:46:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:37,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 23:46:37,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 23:46:37,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 23:46:37,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:46:37,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:46:37,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:37,508 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-07-22 23:46:37,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:37,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775151316] [2022-07-22 23:46:37,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775151316] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:46:37,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309679132] [2022-07-22 23:46:37,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:37,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:46:37,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:46:37,510 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:46:37,511 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 23:46:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:38,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 3113 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:46:38,247 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:46:38,279 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 23:46:38,279 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:46:38,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309679132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:38,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:46:38,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-22 23:46:38,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747979399] [2022-07-22 23:46:38,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:38,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:46:38,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:38,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:46:38,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:46:38,281 INFO L87 Difference]: Start difference. First operand 7996 states and 11567 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 23:46:38,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:38,557 INFO L93 Difference]: Finished difference Result 16086 states and 23336 transitions. [2022-07-22 23:46:38,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:46:38,558 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 200 [2022-07-22 23:46:38,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:38,587 INFO L225 Difference]: With dead ends: 16086 [2022-07-22 23:46:38,587 INFO L226 Difference]: Without dead ends: 8100 [2022-07-22 23:46:38,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:46:38,609 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 21 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:38,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4496 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:46:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8100 states. [2022-07-22 23:46:38,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8100 to 8012. [2022-07-22 23:46:38,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8012 states, 5817 states have (on average 1.3175176207667183) internal successors, (7664), 5913 states have internal predecessors, (7664), 1646 states have call successors, (1646), 461 states have call predecessors, (1646), 548 states have return successors, (2273), 1733 states have call predecessors, (2273), 1645 states have call successors, (2273) [2022-07-22 23:46:38,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8012 states to 8012 states and 11583 transitions. [2022-07-22 23:46:38,935 INFO L78 Accepts]: Start accepts. Automaton has 8012 states and 11583 transitions. Word has length 200 [2022-07-22 23:46:38,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:38,936 INFO L495 AbstractCegarLoop]: Abstraction has 8012 states and 11583 transitions. [2022-07-22 23:46:38,936 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (23), 2 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-22 23:46:38,936 INFO L276 IsEmpty]: Start isEmpty. Operand 8012 states and 11583 transitions. [2022-07-22 23:46:38,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-22 23:46:38,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:38,949 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 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] [2022-07-22 23:46:38,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 23:46:39,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:46:39,170 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:39,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1728748306, now seen corresponding path program 1 times [2022-07-22 23:46:39,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:39,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357203180] [2022-07-22 23:46:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:39,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:39,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:39,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:39,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:46:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:39,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:46:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:39,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:46:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:46:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:39,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:46:39,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:46:39,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:46:39,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:39,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:39,502 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 23:46:39,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:39,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357203180] [2022-07-22 23:46:39,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357203180] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:39,502 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:39,502 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:46:39,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126715927] [2022-07-22 23:46:39,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:39,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:46:39,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:39,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:46:39,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:46:39,504 INFO L87 Difference]: Start difference. First operand 8012 states and 11583 transitions. Second operand has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 6 states have internal predecessors, (106), 4 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 23:46:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:46:48,197 INFO L93 Difference]: Finished difference Result 17306 states and 25386 transitions. [2022-07-22 23:46:48,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 23:46:48,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 6 states have internal predecessors, (106), 4 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 156 [2022-07-22 23:46:48,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:46:48,280 INFO L225 Difference]: With dead ends: 17306 [2022-07-22 23:46:48,280 INFO L226 Difference]: Without dead ends: 9304 [2022-07-22 23:46:48,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=364, Unknown=0, NotChecked=0, Total=462 [2022-07-22 23:46:48,300 INFO L413 NwaCegarLoop]: 2107 mSDtfsCounter, 3331 mSDsluCounter, 6034 mSDsCounter, 0 mSdLazyCounter, 7777 mSolverCounterSat, 2055 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3553 SdHoareTripleChecker+Valid, 8141 SdHoareTripleChecker+Invalid, 9832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2055 IncrementalHoareTripleChecker+Valid, 7777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:46:48,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3553 Valid, 8141 Invalid, 9832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2055 Valid, 7777 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-07-22 23:46:48,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9304 states. [2022-07-22 23:46:48,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9304 to 8116. [2022-07-22 23:46:48,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8116 states, 5905 states have (on average 1.3182049110922947) internal successors, (7784), 5993 states have internal predecessors, (7784), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 556 states have return successors, (2313), 1757 states have call predecessors, (2313), 1653 states have call successors, (2313) [2022-07-22 23:46:48,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8116 states to 8116 states and 11751 transitions. [2022-07-22 23:46:48,623 INFO L78 Accepts]: Start accepts. Automaton has 8116 states and 11751 transitions. Word has length 156 [2022-07-22 23:46:48,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:46:48,624 INFO L495 AbstractCegarLoop]: Abstraction has 8116 states and 11751 transitions. [2022-07-22 23:46:48,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.636363636363637) internal successors, (106), 6 states have internal predecessors, (106), 4 states have call successors, (18), 7 states have call predecessors, (18), 2 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2022-07-22 23:46:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 8116 states and 11751 transitions. [2022-07-22 23:46:48,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-22 23:46:48,639 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:46:48,639 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 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] [2022-07-22 23:46:48,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-22 23:46:48,640 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:46:48,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:46:48,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1474577627, now seen corresponding path program 1 times [2022-07-22 23:46:48,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:46:48,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016650303] [2022-07-22 23:46:48,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:46:48,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:46:48,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:46:48,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:46:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:46:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:46:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:48,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:46:48,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:48,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:46:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:46:48,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:46:48,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:46:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:46:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 23:46:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 23:46:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:48,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:46:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:49,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:46:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:49,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:49,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:46:49,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:49,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:46:49,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:46:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 23:46:49,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:46:49,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016650303] [2022-07-22 23:46:49,142 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016650303] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:46:49,142 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:46:49,142 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-22 23:46:49,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330411836] [2022-07-22 23:46:49,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:46:49,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-22 23:46:49,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:46:49,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-22 23:46:49,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:46:49,144 INFO L87 Difference]: Start difference. First operand 8116 states and 11751 transitions. Second operand has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 9 states have internal predecessors, (121), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 23:47:01,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:01,718 INFO L93 Difference]: Finished difference Result 17054 states and 25433 transitions. [2022-07-22 23:47:01,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-22 23:47:01,719 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 9 states have internal predecessors, (121), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) Word has length 177 [2022-07-22 23:47:01,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:01,757 INFO L225 Difference]: With dead ends: 17054 [2022-07-22 23:47:01,757 INFO L226 Difference]: Without dead ends: 8948 [2022-07-22 23:47:01,785 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=915, Unknown=0, NotChecked=0, Total=1056 [2022-07-22 23:47:01,786 INFO L413 NwaCegarLoop]: 2119 mSDtfsCounter, 3175 mSDsluCounter, 13783 mSDsCounter, 0 mSdLazyCounter, 14681 mSolverCounterSat, 1989 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3397 SdHoareTripleChecker+Valid, 15902 SdHoareTripleChecker+Invalid, 16670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1989 IncrementalHoareTripleChecker+Valid, 14681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:01,787 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3397 Valid, 15902 Invalid, 16670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1989 Valid, 14681 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-07-22 23:47:01,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8948 states. [2022-07-22 23:47:02,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8948 to 8122. [2022-07-22 23:47:02,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8122 states, 5913 states have (on average 1.3164214442753255) internal successors, (7784), 5993 states have internal predecessors, (7784), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 554 states have return successors, (2297), 1763 states have call predecessors, (2297), 1653 states have call successors, (2297) [2022-07-22 23:47:02,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8122 states to 8122 states and 11735 transitions. [2022-07-22 23:47:02,245 INFO L78 Accepts]: Start accepts. Automaton has 8122 states and 11735 transitions. Word has length 177 [2022-07-22 23:47:02,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:02,245 INFO L495 AbstractCegarLoop]: Abstraction has 8122 states and 11735 transitions. [2022-07-22 23:47:02,246 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 8.066666666666666) internal successors, (121), 9 states have internal predecessors, (121), 4 states have call successors, (20), 6 states have call predecessors, (20), 4 states have return successors, (19), 6 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 23:47:02,246 INFO L276 IsEmpty]: Start isEmpty. Operand 8122 states and 11735 transitions. [2022-07-22 23:47:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-22 23:47:02,263 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:02,264 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2022-07-22 23:47:02,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 23:47:02,264 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash -57053180, now seen corresponding path program 1 times [2022-07-22 23:47:02,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:02,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313930266] [2022-07-22 23:47:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:02,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:02,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:02,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:02,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:47:02,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:47:02,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:02,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:47:02,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:47:02,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:47:02,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:47:02,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:47:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 23:47:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 23:47:02,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:47:02,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:47:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:02,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 23:47:02,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:02,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313930266] [2022-07-22 23:47:02,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313930266] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:02,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:02,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 23:47:02,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880424878] [2022-07-22 23:47:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:02,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 23:47:02,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 23:47:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:47:02,636 INFO L87 Difference]: Start difference. First operand 8122 states and 11735 transitions. Second operand has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 8 states have internal predecessors, (117), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:47:13,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:13,291 INFO L93 Difference]: Finished difference Result 17116 states and 25130 transitions. [2022-07-22 23:47:13,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 23:47:13,293 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 8 states have internal predecessors, (117), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) Word has length 171 [2022-07-22 23:47:13,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:13,318 INFO L225 Difference]: With dead ends: 17116 [2022-07-22 23:47:13,318 INFO L226 Difference]: Without dead ends: 9004 [2022-07-22 23:47:13,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=330, Invalid=1476, Unknown=0, NotChecked=0, Total=1806 [2022-07-22 23:47:13,336 INFO L413 NwaCegarLoop]: 2091 mSDtfsCounter, 2636 mSDsluCounter, 12324 mSDsCounter, 0 mSdLazyCounter, 13470 mSolverCounterSat, 1412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2854 SdHoareTripleChecker+Valid, 14415 SdHoareTripleChecker+Invalid, 14882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1412 IncrementalHoareTripleChecker+Valid, 13470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:13,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2854 Valid, 14415 Invalid, 14882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1412 Valid, 13470 Invalid, 0 Unknown, 0 Unchecked, 9.6s Time] [2022-07-22 23:47:13,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9004 states. [2022-07-22 23:47:13,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9004 to 8130. [2022-07-22 23:47:13,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8130 states, 5913 states have (on average 1.3157449687130052) internal successors, (7780), 6005 states have internal predecessors, (7780), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 562 states have return successors, (2355), 1759 states have call predecessors, (2355), 1653 states have call successors, (2355) [2022-07-22 23:47:13,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8130 states to 8130 states and 11789 transitions. [2022-07-22 23:47:13,658 INFO L78 Accepts]: Start accepts. Automaton has 8130 states and 11789 transitions. Word has length 171 [2022-07-22 23:47:13,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:13,660 INFO L495 AbstractCegarLoop]: Abstraction has 8130 states and 11789 transitions. [2022-07-22 23:47:13,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.357142857142858) internal successors, (117), 8 states have internal predecessors, (117), 3 states have call successors, (19), 6 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 2 states have call successors, (18) [2022-07-22 23:47:13,660 INFO L276 IsEmpty]: Start isEmpty. Operand 8130 states and 11789 transitions. [2022-07-22 23:47:13,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-07-22 23:47:13,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:13,676 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-22 23:47:13,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-22 23:47:13,677 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:13,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:13,677 INFO L85 PathProgramCache]: Analyzing trace with hash -699250297, now seen corresponding path program 1 times [2022-07-22 23:47:13,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:13,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280688866] [2022-07-22 23:47:13,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:13,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:13,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:13,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:47:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:13,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:47:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:47:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:13,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:13,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:47:13,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:13,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:47:13,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:13,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:47:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:13,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:47:13,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:13,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:47:13,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:14,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 23:47:14,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:14,004 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-22 23:47:14,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:14,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280688866] [2022-07-22 23:47:14,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280688866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:14,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:14,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:47:14,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215709270] [2022-07-22 23:47:14,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:14,007 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:47:14,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:14,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:47:14,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:47:14,008 INFO L87 Difference]: Start difference. First operand 8130 states and 11789 transitions. Second operand has 9 states, 9 states have (on average 10.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 23:47:19,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:19,088 INFO L93 Difference]: Finished difference Result 16940 states and 25046 transitions. [2022-07-22 23:47:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:47:19,088 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 184 [2022-07-22 23:47:19,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:19,120 INFO L225 Difference]: With dead ends: 16940 [2022-07-22 23:47:19,120 INFO L226 Difference]: Without dead ends: 8820 [2022-07-22 23:47:19,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:47:19,143 INFO L413 NwaCegarLoop]: 1523 mSDtfsCounter, 453 mSDsluCounter, 4325 mSDsCounter, 0 mSdLazyCounter, 4175 mSolverCounterSat, 316 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 5848 SdHoareTripleChecker+Invalid, 4491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 316 IncrementalHoareTripleChecker+Valid, 4175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:19,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [521 Valid, 5848 Invalid, 4491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [316 Valid, 4175 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-22 23:47:19,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8820 states. [2022-07-22 23:47:19,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8820 to 8178. [2022-07-22 23:47:19,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8178 states, 5949 states have (on average 1.31450663977139) internal successors, (7820), 6045 states have internal predecessors, (7820), 1654 states have call successors, (1654), 461 states have call predecessors, (1654), 574 states have return successors, (2391), 1767 states have call predecessors, (2391), 1653 states have call successors, (2391) [2022-07-22 23:47:19,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8178 states to 8178 states and 11865 transitions. [2022-07-22 23:47:19,519 INFO L78 Accepts]: Start accepts. Automaton has 8178 states and 11865 transitions. Word has length 184 [2022-07-22 23:47:19,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:19,520 INFO L495 AbstractCegarLoop]: Abstraction has 8178 states and 11865 transitions. [2022-07-22 23:47:19,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-22 23:47:19,520 INFO L276 IsEmpty]: Start isEmpty. Operand 8178 states and 11865 transitions. [2022-07-22 23:47:19,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-22 23:47:19,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:19,531 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 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] [2022-07-22 23:47:19,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 23:47:19,531 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:19,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:19,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1262956893, now seen corresponding path program 1 times [2022-07-22 23:47:19,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:19,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059693516] [2022-07-22 23:47:19,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:19,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:19,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:19,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:47:19,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:47:19,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:19,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:47:19,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:47:19,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:47:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:47:19,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:47:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 23:47:19,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 23:47:19,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:47:19,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:47:19,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:19,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-22 23:47:19,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:19,873 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-07-22 23:47:19,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:19,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059693516] [2022-07-22 23:47:19,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059693516] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:19,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:19,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 23:47:19,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763616209] [2022-07-22 23:47:19,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:19,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:47:19,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:19,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:47:19,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:47:19,876 INFO L87 Difference]: Start difference. First operand 8178 states and 11865 transitions. Second operand has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 23:47:29,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:29,267 INFO L93 Difference]: Finished difference Result 17968 states and 27325 transitions. [2022-07-22 23:47:29,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-22 23:47:29,267 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 174 [2022-07-22 23:47:29,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:29,308 INFO L225 Difference]: With dead ends: 17968 [2022-07-22 23:47:29,309 INFO L226 Difference]: Without dead ends: 9800 [2022-07-22 23:47:29,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2022-07-22 23:47:29,339 INFO L413 NwaCegarLoop]: 2222 mSDtfsCounter, 2343 mSDsluCounter, 8355 mSDsCounter, 0 mSdLazyCounter, 10100 mSolverCounterSat, 1080 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2624 SdHoareTripleChecker+Valid, 10577 SdHoareTripleChecker+Invalid, 11180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1080 IncrementalHoareTripleChecker+Valid, 10100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:29,339 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2624 Valid, 10577 Invalid, 11180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1080 Valid, 10100 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-07-22 23:47:29,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9800 states. [2022-07-22 23:47:29,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9800 to 8118. [2022-07-22 23:47:29,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 5889 states have (on average 1.3129563593139753) internal successors, (7732), 5985 states have internal predecessors, (7732), 1658 states have call successors, (1658), 461 states have call predecessors, (1658), 570 states have return successors, (2301), 1767 states have call predecessors, (2301), 1657 states have call successors, (2301) [2022-07-22 23:47:29,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 11691 transitions. [2022-07-22 23:47:29,668 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 11691 transitions. Word has length 174 [2022-07-22 23:47:29,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:29,668 INFO L495 AbstractCegarLoop]: Abstraction has 8118 states and 11691 transitions. [2022-07-22 23:47:29,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.727272727272727) internal successors, (118), 5 states have internal predecessors, (118), 3 states have call successors, (20), 7 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2022-07-22 23:47:29,669 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 11691 transitions. [2022-07-22 23:47:29,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-22 23:47:29,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:29,743 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-22 23:47:29,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 23:47:29,744 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:29,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:29,746 INFO L85 PathProgramCache]: Analyzing trace with hash 1653280966, now seen corresponding path program 1 times [2022-07-22 23:47:29,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:29,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333590390] [2022-07-22 23:47:29,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:29,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:29,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:29,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:29,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:29,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:29,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:47:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:29,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:29,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:29,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:47:29,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:29,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 23:47:29,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:29,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:29,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:47:30,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:47:30,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:47:30,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:47:30,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:47:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:47:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 23:47:30,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 23:47:30,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:47:30,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-22 23:47:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:30,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:47:30,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:30,146 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-22 23:47:30,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:30,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333590390] [2022-07-22 23:47:30,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333590390] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:47:30,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1596487340] [2022-07-22 23:47:30,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:30,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:47:30,147 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:47:30,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:47:30,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 23:47:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:31,090 INFO L263 TraceCheckSpWp]: Trace formula consists of 3144 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:47:31,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:31,120 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 23:47:31,120 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:31,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1596487340] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:31,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:47:31,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [12] total 14 [2022-07-22 23:47:31,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988233877] [2022-07-22 23:47:31,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:31,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 23:47:31,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:31,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 23:47:31,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:47:31,123 INFO L87 Difference]: Start difference. First operand 8118 states and 11691 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-22 23:47:31,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:31,432 INFO L93 Difference]: Finished difference Result 16330 states and 23584 transitions. [2022-07-22 23:47:31,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-22 23:47:31,433 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 209 [2022-07-22 23:47:31,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:31,470 INFO L225 Difference]: With dead ends: 16330 [2022-07-22 23:47:31,470 INFO L226 Difference]: Without dead ends: 8222 [2022-07-22 23:47:31,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:47:31,499 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 21 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 4496 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:31,500 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 4496 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:47:31,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8222 states. [2022-07-22 23:47:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8222 to 8118. [2022-07-22 23:47:31,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 5889 states have (on average 1.3129563593139753) internal successors, (7732), 5985 states have internal predecessors, (7732), 1658 states have call successors, (1658), 461 states have call predecessors, (1658), 570 states have return successors, (2301), 1767 states have call predecessors, (2301), 1657 states have call successors, (2301) [2022-07-22 23:47:31,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 11691 transitions. [2022-07-22 23:47:31,827 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 11691 transitions. Word has length 209 [2022-07-22 23:47:31,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:31,828 INFO L495 AbstractCegarLoop]: Abstraction has 8118 states and 11691 transitions. [2022-07-22 23:47:31,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-22 23:47:31,828 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 11691 transitions. [2022-07-22 23:47:31,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-07-22 23:47:31,839 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:31,840 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 3, 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] [2022-07-22 23:47:31,880 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 23:47:32,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-22 23:47:32,056 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:32,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:32,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1987673108, now seen corresponding path program 1 times [2022-07-22 23:47:32,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:32,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839484390] [2022-07-22 23:47:32,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:32,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:32,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:47:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:47:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:32,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:47:32,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:47:32,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:47:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:47:32,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-22 23:47:32,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-22 23:47:32,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-22 23:47:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-22 23:47:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:47:32,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:47:32,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:32,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:32,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:47:32,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:32,541 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 23:47:32,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:32,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839484390] [2022-07-22 23:47:32,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839484390] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:47:32,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610550591] [2022-07-22 23:47:32,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:32,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:47:32,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:47:32,564 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:47:32,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 23:47:33,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:33,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 3010 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-22 23:47:33,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:47:33,487 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 23:47:33,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:47:33,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1610550591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:33,487 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:47:33,488 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-07-22 23:47:33,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075866199] [2022-07-22 23:47:33,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:33,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 23:47:33,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:33,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 23:47:33,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-07-22 23:47:33,490 INFO L87 Difference]: Start difference. First operand 8118 states and 11691 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-22 23:47:33,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:33,796 INFO L93 Difference]: Finished difference Result 16354 states and 23628 transitions. [2022-07-22 23:47:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 23:47:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) Word has length 191 [2022-07-22 23:47:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:33,834 INFO L225 Difference]: With dead ends: 16354 [2022-07-22 23:47:33,835 INFO L226 Difference]: Without dead ends: 8246 [2022-07-22 23:47:33,859 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-07-22 23:47:33,862 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 10 mSDsluCounter, 4504 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 6012 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:33,863 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 6012 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:47:33,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8246 states. [2022-07-22 23:47:34,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8246 to 8158. [2022-07-22 23:47:34,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8158 states, 5917 states have (on average 1.3114754098360655) internal successors, (7760), 6017 states have internal predecessors, (7760), 1658 states have call successors, (1658), 461 states have call predecessors, (1658), 582 states have return successors, (2333), 1775 states have call predecessors, (2333), 1657 states have call successors, (2333) [2022-07-22 23:47:34,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8158 states to 8158 states and 11751 transitions. [2022-07-22 23:47:34,191 INFO L78 Accepts]: Start accepts. Automaton has 8158 states and 11751 transitions. Word has length 191 [2022-07-22 23:47:34,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:34,192 INFO L495 AbstractCegarLoop]: Abstraction has 8158 states and 11751 transitions. [2022-07-22 23:47:34,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 4 states have internal predecessors, (130), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 3 states have call predecessors, (21), 1 states have call successors, (21) [2022-07-22 23:47:34,193 INFO L276 IsEmpty]: Start isEmpty. Operand 8158 states and 11751 transitions. [2022-07-22 23:47:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2022-07-22 23:47:34,205 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:34,205 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-22 23:47:34,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 23:47:34,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-22 23:47:34,420 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:34,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:34,421 INFO L85 PathProgramCache]: Analyzing trace with hash -94020359, now seen corresponding path program 1 times [2022-07-22 23:47:34,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:34,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603871531] [2022-07-22 23:47:34,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:34,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:34,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:34,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:47:34,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:34,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:47:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 23:47:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:47:34,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:47:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:47:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:47:34,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:47:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:47:34,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 23:47:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 23:47:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:47:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:47:34,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:34,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:47:34,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:34,853 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-22 23:47:34,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:34,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603871531] [2022-07-22 23:47:34,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603871531] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:34,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:34,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:47:34,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329621449] [2022-07-22 23:47:34,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:34,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:47:34,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:34,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:47:34,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:47:34,855 INFO L87 Difference]: Start difference. First operand 8158 states and 11751 transitions. Second operand has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:47:39,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:39,971 INFO L93 Difference]: Finished difference Result 18060 states and 26671 transitions. [2022-07-22 23:47:39,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 23:47:39,972 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 205 [2022-07-22 23:47:39,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:40,014 INFO L225 Difference]: With dead ends: 18060 [2022-07-22 23:47:40,015 INFO L226 Difference]: Without dead ends: 9912 [2022-07-22 23:47:40,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:47:40,042 INFO L413 NwaCegarLoop]: 1576 mSDtfsCounter, 1001 mSDsluCounter, 3316 mSDsCounter, 0 mSdLazyCounter, 3496 mSolverCounterSat, 736 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 4892 SdHoareTripleChecker+Invalid, 4232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 736 IncrementalHoareTripleChecker+Valid, 3496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:40,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1123 Valid, 4892 Invalid, 4232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [736 Valid, 3496 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-22 23:47:40,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9912 states. [2022-07-22 23:47:40,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9912 to 8166. [2022-07-22 23:47:40,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8166 states, 5925 states have (on average 1.311054852320675) internal successors, (7768), 6025 states have internal predecessors, (7768), 1658 states have call successors, (1658), 461 states have call predecessors, (1658), 582 states have return successors, (2333), 1775 states have call predecessors, (2333), 1657 states have call successors, (2333) [2022-07-22 23:47:40,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8166 states to 8166 states and 11759 transitions. [2022-07-22 23:47:40,560 INFO L78 Accepts]: Start accepts. Automaton has 8166 states and 11759 transitions. Word has length 205 [2022-07-22 23:47:40,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:40,560 INFO L495 AbstractCegarLoop]: Abstraction has 8166 states and 11759 transitions. [2022-07-22 23:47:40,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:47:40,560 INFO L276 IsEmpty]: Start isEmpty. Operand 8166 states and 11759 transitions. [2022-07-22 23:47:40,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-22 23:47:40,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:40,572 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2022-07-22 23:47:40,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 23:47:40,572 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:40,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1051927289, now seen corresponding path program 1 times [2022-07-22 23:47:40,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:40,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115337331] [2022-07-22 23:47:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:40,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:47:40,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:47:40,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:47:40,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:47:40,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:47:40,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:47:40,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:47:40,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 23:47:40,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 23:47:40,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:47:40,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:47:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:40,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:40,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:47:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:40,948 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-22 23:47:40,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:40,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115337331] [2022-07-22 23:47:40,949 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115337331] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:40,949 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:40,949 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 23:47:40,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502549211] [2022-07-22 23:47:40,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:40,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 23:47:40,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:40,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 23:47:40,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:47:40,951 INFO L87 Difference]: Start difference. First operand 8166 states and 11759 transitions. Second operand has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 7 states have internal predecessors, (121), 4 states have call successors, (21), 8 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 23:47:55,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:47:55,097 INFO L93 Difference]: Finished difference Result 19104 states and 28392 transitions. [2022-07-22 23:47:55,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 23:47:55,098 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 7 states have internal predecessors, (121), 4 states have call successors, (21), 8 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 176 [2022-07-22 23:47:55,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:47:55,148 INFO L225 Difference]: With dead ends: 19104 [2022-07-22 23:47:55,149 INFO L226 Difference]: Without dead ends: 10948 [2022-07-22 23:47:55,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=732, Unknown=0, NotChecked=0, Total=930 [2022-07-22 23:47:55,177 INFO L413 NwaCegarLoop]: 2116 mSDtfsCounter, 3222 mSDsluCounter, 7272 mSDsCounter, 0 mSdLazyCounter, 15784 mSolverCounterSat, 2048 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3490 SdHoareTripleChecker+Valid, 9388 SdHoareTripleChecker+Invalid, 17832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2048 IncrementalHoareTripleChecker+Valid, 15784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:47:55,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3490 Valid, 9388 Invalid, 17832 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2048 Valid, 15784 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-07-22 23:47:55,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10948 states. [2022-07-22 23:47:55,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10948 to 8858. [2022-07-22 23:47:55,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8858 states, 6435 states have (on average 1.308003108003108) internal successors, (8417), 6518 states have internal predecessors, (8417), 1810 states have call successors, (1810), 461 states have call predecessors, (1810), 612 states have return successors, (2618), 1986 states have call predecessors, (2618), 1809 states have call successors, (2618) [2022-07-22 23:47:55,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8858 states to 8858 states and 12845 transitions. [2022-07-22 23:47:55,786 INFO L78 Accepts]: Start accepts. Automaton has 8858 states and 12845 transitions. Word has length 176 [2022-07-22 23:47:55,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:47:55,788 INFO L495 AbstractCegarLoop]: Abstraction has 8858 states and 12845 transitions. [2022-07-22 23:47:55,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 8.642857142857142) internal successors, (121), 7 states have internal predecessors, (121), 4 states have call successors, (21), 8 states have call predecessors, (21), 4 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-07-22 23:47:55,788 INFO L276 IsEmpty]: Start isEmpty. Operand 8858 states and 12845 transitions. [2022-07-22 23:47:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-22 23:47:55,800 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:47:55,801 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:47:55,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-22 23:47:55,801 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:47:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:47:55,801 INFO L85 PathProgramCache]: Analyzing trace with hash 523012344, now seen corresponding path program 1 times [2022-07-22 23:47:55,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:47:55,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1611943066] [2022-07-22 23:47:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:47:55,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:47:55,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:55,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:55,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:55,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:55,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:47:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:55,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:47:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:55,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:47:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:55,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:47:55,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:47:56,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:47:56,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:56,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:56,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:56,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:47:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:56,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:47:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:47:56,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:47:56,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:47:56,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:47:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:47:56,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 23:47:56,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 23:47:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:47:56,109 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-22 23:47:56,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:47:56,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1611943066] [2022-07-22 23:47:56,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1611943066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:47:56,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:47:56,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 23:47:56,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382366440] [2022-07-22 23:47:56,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:47:56,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 23:47:56,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:47:56,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 23:47:56,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-22 23:47:56,112 INFO L87 Difference]: Start difference. First operand 8858 states and 12845 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:48:00,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:00,090 INFO L93 Difference]: Finished difference Result 18556 states and 27537 transitions. [2022-07-22 23:48:00,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 23:48:00,090 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 188 [2022-07-22 23:48:00,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:00,117 INFO L225 Difference]: With dead ends: 18556 [2022-07-22 23:48:00,117 INFO L226 Difference]: Without dead ends: 9708 [2022-07-22 23:48:00,137 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-07-22 23:48:00,138 INFO L413 NwaCegarLoop]: 1535 mSDtfsCounter, 756 mSDsluCounter, 2175 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 3710 SdHoareTripleChecker+Invalid, 2540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 625 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:00,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 3710 Invalid, 2540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [625 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-22 23:48:00,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9708 states. [2022-07-22 23:48:00,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9708 to 8866. [2022-07-22 23:48:00,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8866 states, 6443 states have (on average 1.307620673599255) internal successors, (8425), 6526 states have internal predecessors, (8425), 1810 states have call successors, (1810), 461 states have call predecessors, (1810), 612 states have return successors, (2618), 1986 states have call predecessors, (2618), 1809 states have call successors, (2618) [2022-07-22 23:48:00,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8866 states to 8866 states and 12853 transitions. [2022-07-22 23:48:00,612 INFO L78 Accepts]: Start accepts. Automaton has 8866 states and 12853 transitions. Word has length 188 [2022-07-22 23:48:00,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:00,612 INFO L495 AbstractCegarLoop]: Abstraction has 8866 states and 12853 transitions. [2022-07-22 23:48:00,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 3 states have internal predecessors, (94), 2 states have call successors, (18), 6 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-22 23:48:00,613 INFO L276 IsEmpty]: Start isEmpty. Operand 8866 states and 12853 transitions. [2022-07-22 23:48:00,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2022-07-22 23:48:00,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:00,627 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2022-07-22 23:48:00,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-22 23:48:00,628 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:00,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:00,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1453547937, now seen corresponding path program 1 times [2022-07-22 23:48:00,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:48:00,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64461230] [2022-07-22 23:48:00,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:00,629 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:48:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:00,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:00,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:00,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:48:00,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:00,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:48:00,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:00,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:48:00,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:00,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-22 23:48:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:00,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:00,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:00,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 23:48:00,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:01,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:48:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:48:01,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-22 23:48:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:48:01,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-22 23:48:01,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 23:48:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 23:48:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:48:01,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:48:01,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:01,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:01,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:01,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-22 23:48:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:01,159 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-07-22 23:48:01,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:48:01,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64461230] [2022-07-22 23:48:01,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64461230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:01,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:01,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-22 23:48:01,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855291299] [2022-07-22 23:48:01,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:01,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-22 23:48:01,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:48:01,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-22 23:48:01,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-22 23:48:01,163 INFO L87 Difference]: Start difference. First operand 8866 states and 12853 transitions. Second operand has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (24), 8 states have call predecessors, (24), 4 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 23:48:03,803 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-22 23:48:17,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:17,521 INFO L93 Difference]: Finished difference Result 26738 states and 40342 transitions. [2022-07-22 23:48:17,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-22 23:48:17,522 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (24), 8 states have call predecessors, (24), 4 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23) Word has length 209 [2022-07-22 23:48:17,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:17,582 INFO L225 Difference]: With dead ends: 26738 [2022-07-22 23:48:17,583 INFO L226 Difference]: Without dead ends: 17882 [2022-07-22 23:48:17,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 388 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=310, Invalid=1250, Unknown=0, NotChecked=0, Total=1560 [2022-07-22 23:48:17,608 INFO L413 NwaCegarLoop]: 3017 mSDtfsCounter, 3916 mSDsluCounter, 10877 mSDsCounter, 0 mSdLazyCounter, 18591 mSolverCounterSat, 3370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4176 SdHoareTripleChecker+Valid, 13894 SdHoareTripleChecker+Invalid, 21961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3370 IncrementalHoareTripleChecker+Valid, 18591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:17,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4176 Valid, 13894 Invalid, 21961 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3370 Valid, 18591 Invalid, 0 Unknown, 0 Unchecked, 14.9s Time] [2022-07-22 23:48:17,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17882 states. [2022-07-22 23:48:18,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17882 to 14152. [2022-07-22 23:48:18,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14152 states, 10181 states have (on average 1.283370985168451) internal successors, (13066), 10303 states have internal predecessors, (13066), 2851 states have call successors, (2851), 867 states have call predecessors, (2851), 1119 states have return successors, (4482), 3116 states have call predecessors, (4482), 2850 states have call successors, (4482) [2022-07-22 23:48:18,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14152 states to 14152 states and 20399 transitions. [2022-07-22 23:48:18,345 INFO L78 Accepts]: Start accepts. Automaton has 14152 states and 20399 transitions. Word has length 209 [2022-07-22 23:48:18,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:18,346 INFO L495 AbstractCegarLoop]: Abstraction has 14152 states and 20399 transitions. [2022-07-22 23:48:18,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 7 states have internal predecessors, (144), 4 states have call successors, (24), 8 states have call predecessors, (24), 4 states have return successors, (23), 5 states have call predecessors, (23), 3 states have call successors, (23) [2022-07-22 23:48:18,346 INFO L276 IsEmpty]: Start isEmpty. Operand 14152 states and 20399 transitions. [2022-07-22 23:48:18,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2022-07-22 23:48:18,361 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:18,361 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 23:48:18,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-22 23:48:18,361 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:18,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:18,362 INFO L85 PathProgramCache]: Analyzing trace with hash -378098040, now seen corresponding path program 1 times [2022-07-22 23:48:18,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:48:18,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039975776] [2022-07-22 23:48:18,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:18,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:48:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:48:18,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:48:18,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:18,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:18,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:48:18,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:48:18,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:18,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:18,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:18,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:48:18,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:18,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:48:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:48:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:18,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:48:18,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:48:18,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 23:48:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 23:48:18,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:18,642 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-22 23:48:18,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:48:18,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039975776] [2022-07-22 23:48:18,643 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039975776] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:48:18,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868160390] [2022-07-22 23:48:18,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:18,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:48:18,644 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:48:18,656 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:48:18,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 23:48:19,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:19,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 2851 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-22 23:48:19,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:19,699 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 170 trivial. 0 not checked. [2022-07-22 23:48:19,699 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:19,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868160390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:19,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:48:19,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-22 23:48:19,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293758121] [2022-07-22 23:48:19,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:19,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 23:48:19,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:48:19,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 23:48:19,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:48:19,701 INFO L87 Difference]: Start difference. First operand 14152 states and 20399 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-22 23:48:20,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:20,465 INFO L93 Difference]: Finished difference Result 28594 states and 41840 transitions. [2022-07-22 23:48:20,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 23:48:20,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 194 [2022-07-22 23:48:20,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:20,512 INFO L225 Difference]: With dead ends: 28594 [2022-07-22 23:48:20,512 INFO L226 Difference]: Without dead ends: 14452 [2022-07-22 23:48:20,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:48:20,544 INFO L413 NwaCegarLoop]: 1530 mSDtfsCounter, 13 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 3032 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:20,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 3032 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 23:48:20,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14452 states. [2022-07-22 23:48:21,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14452 to 14164. [2022-07-22 23:48:21,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14164 states, 10193 states have (on average 1.2830373785931521) internal successors, (13078), 10315 states have internal predecessors, (13078), 2851 states have call successors, (2851), 867 states have call predecessors, (2851), 1119 states have return successors, (4482), 3116 states have call predecessors, (4482), 2850 states have call successors, (4482) [2022-07-22 23:48:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14164 states to 14164 states and 20411 transitions. [2022-07-22 23:48:21,206 INFO L78 Accepts]: Start accepts. Automaton has 14164 states and 20411 transitions. Word has length 194 [2022-07-22 23:48:21,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:21,207 INFO L495 AbstractCegarLoop]: Abstraction has 14164 states and 20411 transitions. [2022-07-22 23:48:21,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-22 23:48:21,207 INFO L276 IsEmpty]: Start isEmpty. Operand 14164 states and 20411 transitions. [2022-07-22 23:48:21,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-22 23:48:21,221 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:21,222 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2022-07-22 23:48:21,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-22 23:48:21,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:48:21,435 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:21,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:21,436 INFO L85 PathProgramCache]: Analyzing trace with hash -1364544696, now seen corresponding path program 1 times [2022-07-22 23:48:21,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:48:21,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207635022] [2022-07-22 23:48:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:21,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:48:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:21,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:48:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:48:21,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:21,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:21,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:21,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:48:21,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:48:21,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:21,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:21,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:48:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:48:21,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 23:48:21,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 23:48:21,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-22 23:48:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:21,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 23:48:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-22 23:48:21,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 23:48:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-22 23:48:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:48:21,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:48:21,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207635022] [2022-07-22 23:48:21,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207635022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:21,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:21,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 23:48:21,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759895036] [2022-07-22 23:48:21,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:21,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:48:21,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:48:21,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:48:21,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:48:21,995 INFO L87 Difference]: Start difference. First operand 14164 states and 20411 transitions. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (24), 8 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:48:28,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:28,692 INFO L93 Difference]: Finished difference Result 30050 states and 44920 transitions. [2022-07-22 23:48:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 23:48:28,694 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (24), 8 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2022-07-22 23:48:28,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:28,772 INFO L225 Difference]: With dead ends: 30050 [2022-07-22 23:48:28,772 INFO L226 Difference]: Without dead ends: 15856 [2022-07-22 23:48:28,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:48:28,834 INFO L413 NwaCegarLoop]: 1516 mSDtfsCounter, 858 mSDsluCounter, 4069 mSDsCounter, 0 mSdLazyCounter, 3742 mSolverCounterSat, 686 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 5585 SdHoareTripleChecker+Invalid, 4428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 686 IncrementalHoareTripleChecker+Valid, 3742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:28,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 5585 Invalid, 4428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [686 Valid, 3742 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-22 23:48:28,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15856 states. [2022-07-22 23:48:29,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15856 to 14218. [2022-07-22 23:48:29,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14218 states, 10241 states have (on average 1.2821013572893272) internal successors, (13130), 10363 states have internal predecessors, (13130), 2851 states have call successors, (2851), 873 states have call predecessors, (2851), 1125 states have return successors, (4473), 3116 states have call predecessors, (4473), 2850 states have call successors, (4473) [2022-07-22 23:48:29,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14218 states to 14218 states and 20454 transitions. [2022-07-22 23:48:29,564 INFO L78 Accepts]: Start accepts. Automaton has 14218 states and 20454 transitions. Word has length 193 [2022-07-22 23:48:29,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:29,565 INFO L495 AbstractCegarLoop]: Abstraction has 14218 states and 20454 transitions. [2022-07-22 23:48:29,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (24), 8 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:48:29,565 INFO L276 IsEmpty]: Start isEmpty. Operand 14218 states and 20454 transitions. [2022-07-22 23:48:29,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-22 23:48:29,583 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:29,584 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2022-07-22 23:48:29,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-22 23:48:29,584 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:29,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:29,584 INFO L85 PathProgramCache]: Analyzing trace with hash 240155942, now seen corresponding path program 1 times [2022-07-22 23:48:29,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:48:29,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826156879] [2022-07-22 23:48:29,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:29,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:48:29,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:29,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:48:29,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:48:29,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:29,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:48:29,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:48:29,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:29,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:29,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:29,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-22 23:48:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:48:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:29,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-22 23:48:29,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:29,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 23:48:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-22 23:48:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 23:48:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 23:48:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-22 23:48:29,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-22 23:48:29,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-22 23:48:29,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:48:29,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826156879] [2022-07-22 23:48:29,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826156879] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:48:29,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215845042] [2022-07-22 23:48:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:29,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:48:29,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:48:29,917 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:48:29,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 23:48:31,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:31,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 2961 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 23:48:31,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:31,096 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-07-22 23:48:31,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 23:48:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-22 23:48:31,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215845042] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 23:48:31,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 23:48:31,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 4, 4] total 11 [2022-07-22 23:48:31,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202498285] [2022-07-22 23:48:31,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 23:48:31,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 23:48:31,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:48:31,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 23:48:31,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:48:31,328 INFO L87 Difference]: Start difference. First operand 14218 states and 20454 transitions. Second operand has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 6 states have internal predecessors, (129), 2 states have call successors, (34), 7 states have call predecessors, (34), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:48:36,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:36,361 INFO L93 Difference]: Finished difference Result 30172 states and 44533 transitions. [2022-07-22 23:48:36,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:48:36,362 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 6 states have internal predecessors, (129), 2 states have call successors, (34), 7 states have call predecessors, (34), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 204 [2022-07-22 23:48:36,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:36,421 INFO L225 Difference]: With dead ends: 30172 [2022-07-22 23:48:36,422 INFO L226 Difference]: Without dead ends: 15964 [2022-07-22 23:48:36,463 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 467 GetRequests, 453 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=153, Unknown=0, NotChecked=0, Total=240 [2022-07-22 23:48:36,463 INFO L413 NwaCegarLoop]: 1527 mSDtfsCounter, 1159 mSDsluCounter, 3538 mSDsCounter, 0 mSdLazyCounter, 3358 mSolverCounterSat, 987 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 5065 SdHoareTripleChecker+Invalid, 4345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 987 IncrementalHoareTripleChecker+Valid, 3358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:36,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 5065 Invalid, 4345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [987 Valid, 3358 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 23:48:36,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15964 states. [2022-07-22 23:48:37,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15964 to 14326. [2022-07-22 23:48:37,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14326 states, 10349 states have (on average 1.2791574065127065) internal successors, (13238), 10471 states have internal predecessors, (13238), 2851 states have call successors, (2851), 873 states have call predecessors, (2851), 1125 states have return successors, (4473), 3116 states have call predecessors, (4473), 2850 states have call successors, (4473) [2022-07-22 23:48:37,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14326 states to 14326 states and 20562 transitions. [2022-07-22 23:48:37,182 INFO L78 Accepts]: Start accepts. Automaton has 14326 states and 20562 transitions. Word has length 204 [2022-07-22 23:48:37,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:37,182 INFO L495 AbstractCegarLoop]: Abstraction has 14326 states and 20562 transitions. [2022-07-22 23:48:37,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.727272727272727) internal successors, (129), 6 states have internal predecessors, (129), 2 states have call successors, (34), 7 states have call predecessors, (34), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:48:37,183 INFO L276 IsEmpty]: Start isEmpty. Operand 14326 states and 20562 transitions. [2022-07-22 23:48:37,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-22 23:48:37,197 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:37,197 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2022-07-22 23:48:37,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 23:48:37,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:48:37,404 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:37,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:37,404 INFO L85 PathProgramCache]: Analyzing trace with hash 500158816, now seen corresponding path program 1 times [2022-07-22 23:48:37,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:48:37,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767176407] [2022-07-22 23:48:37,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:37,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:48:37,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:37,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:48:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:48:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:37,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:48:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:48:37,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:37,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:37,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:48:37,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:48:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 23:48:37,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 23:48:37,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 23:48:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:37,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 23:48:37,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-22 23:48:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-22 23:48:37,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 23:48:37,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:37,853 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:48:37,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:48:37,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767176407] [2022-07-22 23:48:37,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767176407] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 23:48:37,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011459369] [2022-07-22 23:48:37,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:37,854 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 23:48:37,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 23:48:37,855 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-22 23:48:37,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 23:48:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:38,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 2951 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-22 23:48:38,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 23:48:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-22 23:48:39,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 23:48:39,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011459369] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:39,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 23:48:39,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-07-22 23:48:39,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910638305] [2022-07-22 23:48:39,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:39,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:48:39,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:48:39,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:48:39,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2022-07-22 23:48:39,262 INFO L87 Difference]: Start difference. First operand 14326 states and 20562 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 23:48:52,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:48:52,734 INFO L93 Difference]: Finished difference Result 58470 states and 111408 transitions. [2022-07-22 23:48:52,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 23:48:52,735 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) Word has length 193 [2022-07-22 23:48:52,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:48:53,253 INFO L225 Difference]: With dead ends: 58470 [2022-07-22 23:48:53,253 INFO L226 Difference]: Without dead ends: 50832 [2022-07-22 23:48:53,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=485, Unknown=0, NotChecked=0, Total=600 [2022-07-22 23:48:53,324 INFO L413 NwaCegarLoop]: 2427 mSDtfsCounter, 8505 mSDsluCounter, 6996 mSDsCounter, 0 mSdLazyCounter, 13869 mSolverCounterSat, 5073 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9151 SdHoareTripleChecker+Valid, 9423 SdHoareTripleChecker+Invalid, 18942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5073 IncrementalHoareTripleChecker+Valid, 13869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:48:53,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9151 Valid, 9423 Invalid, 18942 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5073 Valid, 13869 Invalid, 0 Unknown, 0 Unchecked, 10.6s Time] [2022-07-22 23:48:53,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50832 states. [2022-07-22 23:48:56,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50832 to 48876. [2022-07-22 23:48:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48876 states, 34869 states have (on average 1.2760044738879808) internal successors, (44493), 35280 states have internal predecessors, (44493), 10553 states have call successors, (10553), 2178 states have call predecessors, (10553), 3453 states have return successors, (37899), 11982 states have call predecessors, (37899), 10552 states have call successors, (37899) [2022-07-22 23:48:56,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48876 states to 48876 states and 92945 transitions. [2022-07-22 23:48:56,705 INFO L78 Accepts]: Start accepts. Automaton has 48876 states and 92945 transitions. Word has length 193 [2022-07-22 23:48:56,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:48:56,706 INFO L495 AbstractCegarLoop]: Abstraction has 48876 states and 92945 transitions. [2022-07-22 23:48:56,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 9 states have internal predecessors, (134), 6 states have call successors, (24), 4 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-22 23:48:56,706 INFO L276 IsEmpty]: Start isEmpty. Operand 48876 states and 92945 transitions. [2022-07-22 23:48:56,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-22 23:48:56,729 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:48:56,729 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 8, 3, 3, 3, 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] [2022-07-22 23:48:56,755 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 23:48:56,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-22 23:48:56,931 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:48:56,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:48:56,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1173558461, now seen corresponding path program 1 times [2022-07-22 23:48:56,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:48:56,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325646732] [2022-07-22 23:48:56,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:48:56,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:48:56,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:48:57,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:48:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 23:48:57,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 23:48:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-22 23:48:57,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-22 23:48:57,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-22 23:48:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 23:48:57,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:48:57,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 23:48:57,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-22 23:48:57,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-22 23:48:57,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 23:48:57,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 23:48:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 23:48:57,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:48:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:57,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 23:48:57,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:57,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:48:57,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:48:57,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-22 23:48:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-22 23:48:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:48:57,270 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 158 trivial. 0 not checked. [2022-07-22 23:48:57,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:48:57,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325646732] [2022-07-22 23:48:57,271 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325646732] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:48:57,271 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:48:57,271 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-22 23:48:57,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089476736] [2022-07-22 23:48:57,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:48:57,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-22 23:48:57,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:48:57,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-22 23:48:57,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-22 23:48:57,273 INFO L87 Difference]: Start difference. First operand 48876 states and 92945 transitions. Second operand has 13 states, 12 states have (on average 10.333333333333334) internal successors, (124), 7 states have internal predecessors, (124), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-22 23:49:10,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:49:10,792 INFO L93 Difference]: Finished difference Result 122365 states and 241361 transitions. [2022-07-22 23:49:10,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-22 23:49:10,793 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 10.333333333333334) internal successors, (124), 7 states have internal predecessors, (124), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) Word has length 206 [2022-07-22 23:49:10,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:49:11,540 INFO L225 Difference]: With dead ends: 122365 [2022-07-22 23:49:11,540 INFO L226 Difference]: Without dead ends: 73439 [2022-07-22 23:49:11,915 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=791, Unknown=0, NotChecked=0, Total=992 [2022-07-22 23:49:11,922 INFO L413 NwaCegarLoop]: 2447 mSDtfsCounter, 2055 mSDsluCounter, 13386 mSDsCounter, 0 mSdLazyCounter, 8890 mSolverCounterSat, 1223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 15833 SdHoareTripleChecker+Invalid, 10113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1223 IncrementalHoareTripleChecker+Valid, 8890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-22 23:49:11,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 15833 Invalid, 10113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1223 Valid, 8890 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-22 23:49:11,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73439 states. [2022-07-22 23:49:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73439 to 65612. [2022-07-22 23:49:15,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65612 states, 47466 states have (on average 1.283487127628197) internal successors, (60922), 47978 states have internal predecessors, (60922), 13510 states have call successors, (13510), 2983 states have call predecessors, (13510), 4635 states have return successors, (44088), 15354 states have call predecessors, (44088), 13509 states have call successors, (44088) [2022-07-22 23:49:16,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65612 states to 65612 states and 118520 transitions. [2022-07-22 23:49:16,569 INFO L78 Accepts]: Start accepts. Automaton has 65612 states and 118520 transitions. Word has length 206 [2022-07-22 23:49:16,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:49:16,570 INFO L495 AbstractCegarLoop]: Abstraction has 65612 states and 118520 transitions. [2022-07-22 23:49:16,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 10.333333333333334) internal successors, (124), 7 states have internal predecessors, (124), 4 states have call successors, (25), 6 states have call predecessors, (25), 3 states have return successors, (24), 5 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-22 23:49:16,570 INFO L276 IsEmpty]: Start isEmpty. Operand 65612 states and 118520 transitions. [2022-07-22 23:49:16,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-22 23:49:16,595 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:49:16,596 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2022-07-22 23:49:16,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-22 23:49:16,596 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:49:16,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:49:16,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1303295064, now seen corresponding path program 1 times [2022-07-22 23:49:16,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:49:16,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698626518] [2022-07-22 23:49:16,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:49:16,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:49:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:16,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:49:16,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:16,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:49:16,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:16,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:49:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:16,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-22 23:49:16,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:16,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:49:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:49:17,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:49:17,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:49:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:49:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:49:17,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:49:17,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:49:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:49:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:49:17,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:49:17,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 23:49:17,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 23:49:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 23:49:17,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:49:17,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 23:49:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 23:49:17,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-22 23:49:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 23:49:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:17,208 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:49:17,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:49:17,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698626518] [2022-07-22 23:49:17,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1698626518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:49:17,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:49:17,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-22 23:49:17,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665521903] [2022-07-22 23:49:17,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:49:17,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-22 23:49:17,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:49:17,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-22 23:49:17,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-22 23:49:17,210 INFO L87 Difference]: Start difference. First operand 65612 states and 118520 transitions. Second operand has 10 states, 10 states have (on average 13.2) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:49:25,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:49:25,808 INFO L93 Difference]: Finished difference Result 137127 states and 277943 transitions. [2022-07-22 23:49:25,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-22 23:49:25,809 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 193 [2022-07-22 23:49:25,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:49:26,543 INFO L225 Difference]: With dead ends: 137127 [2022-07-22 23:49:26,543 INFO L226 Difference]: Without dead ends: 71525 [2022-07-22 23:49:27,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-07-22 23:49:27,148 INFO L413 NwaCegarLoop]: 1520 mSDtfsCounter, 1263 mSDsluCounter, 3084 mSDsCounter, 0 mSdLazyCounter, 2825 mSolverCounterSat, 1070 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1331 SdHoareTripleChecker+Valid, 4604 SdHoareTripleChecker+Invalid, 3895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1070 IncrementalHoareTripleChecker+Valid, 2825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-22 23:49:27,149 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1331 Valid, 4604 Invalid, 3895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1070 Valid, 2825 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-22 23:49:27,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71525 states. [2022-07-22 23:49:31,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71525 to 65732. [2022-07-22 23:49:31,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65732 states, 47571 states have (on average 1.2831767253158437) internal successors, (61042), 48098 states have internal predecessors, (61042), 13510 states have call successors, (13510), 2983 states have call predecessors, (13510), 4650 states have return successors, (44148), 15354 states have call predecessors, (44148), 13509 states have call successors, (44148) [2022-07-22 23:49:31,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65732 states to 65732 states and 118700 transitions. [2022-07-22 23:49:31,840 INFO L78 Accepts]: Start accepts. Automaton has 65732 states and 118700 transitions. Word has length 193 [2022-07-22 23:49:31,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 23:49:31,841 INFO L495 AbstractCegarLoop]: Abstraction has 65732 states and 118700 transitions. [2022-07-22 23:49:31,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 13.2) internal successors, (132), 4 states have internal predecessors, (132), 2 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:49:31,841 INFO L276 IsEmpty]: Start isEmpty. Operand 65732 states and 118700 transitions. [2022-07-22 23:49:31,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2022-07-22 23:49:31,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 23:49:31,869 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 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] [2022-07-22 23:49:31,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-22 23:49:31,870 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 23:49:31,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 23:49:31,870 INFO L85 PathProgramCache]: Analyzing trace with hash -537366364, now seen corresponding path program 1 times [2022-07-22 23:49:31,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 23:49:31,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750767191] [2022-07-22 23:49:31,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 23:49:31,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 23:49:31,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:31,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:49:31,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:31,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:49:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-22 23:49:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 23:49:32,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 23:49:32,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-22 23:49:32,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:49:32,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-22 23:49:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-22 23:49:32,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:49:32,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:49:32,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:49:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 23:49:32,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 23:49:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 23:49:32,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-22 23:49:32,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-22 23:49:32,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 23:49:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 23:49:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-22 23:49:32,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 23:49:32,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-22 23:49:32,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-22 23:49:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 23:49:32,253 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-22 23:49:32,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 23:49:32,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750767191] [2022-07-22 23:49:32,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750767191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 23:49:32,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 23:49:32,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 23:49:32,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459328247] [2022-07-22 23:49:32,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 23:49:32,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 23:49:32,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 23:49:32,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 23:49:32,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-22 23:49:32,255 INFO L87 Difference]: Start difference. First operand 65732 states and 118700 transitions. Second operand has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2022-07-22 23:49:40,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 23:49:40,800 INFO L93 Difference]: Finished difference Result 127608 states and 253854 transitions. [2022-07-22 23:49:40,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 23:49:40,801 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.11111111111111) internal successors, (136), 3 states have internal predecessors, (136), 2 states have call successors, (24), 8 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 197 [2022-07-22 23:49:40,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 23:49:41,563 INFO L225 Difference]: With dead ends: 127608 [2022-07-22 23:49:41,563 INFO L226 Difference]: Without dead ends: 71120 [2022-07-22 23:49:41,957 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2022-07-22 23:49:41,957 INFO L413 NwaCegarLoop]: 1486 mSDtfsCounter, 850 mSDsluCounter, 2700 mSDsCounter, 0 mSdLazyCounter, 2491 mSolverCounterSat, 700 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 4186 SdHoareTripleChecker+Invalid, 3191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 700 IncrementalHoareTripleChecker+Valid, 2491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-22 23:49:41,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 4186 Invalid, 3191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [700 Valid, 2491 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-22 23:49:42,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71120 states.