./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.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 efa92cfb99ddf37faa5e05d118bbca018e76e6d1ade87f7958feff968c230276 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 23:23:18,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 23:23:18,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 23:23:18,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 23:23:18,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 23:23:18,151 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 23:23:18,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 23:23:18,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 23:23:18,155 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 23:23:18,155 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 23:23:18,156 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 23:23:18,157 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 23:23:18,157 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 23:23:18,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 23:23:18,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 23:23:18,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 23:23:18,160 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 23:23:18,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 23:23:18,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 23:23:18,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 23:23:18,164 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 23:23:18,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 23:23:18,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 23:23:18,166 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 23:23:18,167 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 23:23:18,169 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 23:23:18,169 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 23:23:18,169 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 23:23:18,170 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 23:23:18,170 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 23:23:18,171 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 23:23:18,171 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 23:23:18,172 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 23:23:18,172 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 23:23:18,173 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 23:23:18,173 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 23:23:18,174 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 23:23:18,174 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 23:23:18,174 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 23:23:18,174 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 23:23:18,175 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 23:23:18,176 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 23:23:18,176 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-13 23:23:18,192 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 23:23:18,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 23:23:18,192 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 23:23:18,193 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 23:23:18,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 23:23:18,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 23:23:18,194 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 23:23:18,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 23:23:18,194 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 23:23:18,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 23:23:18,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 23:23:18,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 23:23:18,195 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 23:23:18,195 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 23:23:18,195 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 23:23:18,195 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 23:23:18,195 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 23:23:18,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 23:23:18,196 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 23:23:18,196 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 23:23:18,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 23:23:18,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:23:18,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 23:23:18,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 23:23:18,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 23:23:18,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 23:23:18,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 23:23:18,197 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 23:23:18,197 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 23:23:18,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 23:23:18,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> efa92cfb99ddf37faa5e05d118bbca018e76e6d1ade87f7958feff968c230276 [2022-07-13 23:23:18,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 23:23:18,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 23:23:18,431 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 23:23:18,431 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 23:23:18,432 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 23:23:18,433 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i [2022-07-13 23:23:18,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9c9c0f7/250b2cb719de44a0be02ff4fa33d398d/FLAG5b7221713 [2022-07-13 23:23:19,074 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 23:23:19,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i [2022-07-13 23:23:19,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9c9c0f7/250b2cb719de44a0be02ff4fa33d398d/FLAG5b7221713 [2022-07-13 23:23:19,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d9c9c0f7/250b2cb719de44a0be02ff4fa33d398d [2022-07-13 23:23:19,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 23:23:19,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 23:23:19,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 23:23:19,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 23:23:19,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 23:23:19,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:23:19" (1/1) ... [2022-07-13 23:23:19,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@489a1555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:19, skipping insertion in model container [2022-07-13 23:23:19,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 11:23:19" (1/1) ... [2022-07-13 23:23:19,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 23:23:19,639 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 23:23:20,822 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-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i[404095,404108] [2022-07-13 23:23:20,910 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:23:20,938 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 23:23:21,232 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-commit-tester/m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i[404095,404108] [2022-07-13 23:23:21,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 23:23:21,291 INFO L208 MainTranslator]: Completed translation [2022-07-13 23:23:21,293 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21 WrapperNode [2022-07-13 23:23:21,293 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 23:23:21,294 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 23:23:21,294 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 23:23:21,295 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 23:23:21,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,500 INFO L137 Inliner]: procedures = 167, calls = 2343, calls flagged for inlining = 49, calls inlined = 38, statements flattened = 5030 [2022-07-13 23:23:21,501 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 23:23:21,502 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 23:23:21,502 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 23:23:21,502 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 23:23:21,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,551 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,672 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 23:23:21,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 23:23:21,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 23:23:21,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 23:23:21,702 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (1/1) ... [2022-07-13 23:23:21,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 23:23:21,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:23:21,736 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) [2022-07-13 23:23:21,765 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 [2022-07-13 23:23:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_remove [2022-07-13 23:23:21,778 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_remove [2022-07-13 23:23:21,778 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-13 23:23:21,779 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~int [2022-07-13 23:23:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure dntv_live_dvbt_demod_init [2022-07-13 23:23:21,779 INFO L138 BoogieDeclarations]: Found implementation of procedure dntv_live_dvbt_demod_init [2022-07-13 23:23:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure msleep [2022-07-13 23:23:21,779 INFO L138 BoogieDeclarations]: Found implementation of procedure msleep [2022-07-13 23:23:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_advise_release [2022-07-13 23:23:21,779 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_advise_release [2022-07-13 23:23:21,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 23:23:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-13 23:23:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~TO~$Pointer$ [2022-07-13 23:23:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-13 23:23:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-13 23:23:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure stv0299_writereg [2022-07-13 23:23:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0299_writereg [2022-07-13 23:23:21,780 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-13 23:23:21,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-13 23:23:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure attach_xc3028 [2022-07-13 23:23:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure attach_xc3028 [2022-07-13 23:23:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 23:23:21,781 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2022-07-13 23:23:21,781 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_unlock [2022-07-13 23:23:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure stb6100_get_freq [2022-07-13 23:23:21,782 INFO L138 BoogieDeclarations]: Found implementation of procedure stb6100_get_freq [2022-07-13 23:23:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2022-07-13 23:23:21,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2022-07-13 23:23:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure dvico_fusionhdtv_demod_init [2022-07-13 23:23:21,782 INFO L138 BoogieDeclarations]: Found implementation of procedure dvico_fusionhdtv_demod_init [2022-07-13 23:23:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure stv0900_set_ts_param [2022-07-13 23:23:21,782 INFO L138 BoogieDeclarations]: Found implementation of procedure stv0900_set_ts_param [2022-07-13 23:23:21,782 INFO L130 BoogieDeclarations]: Found specification of procedure i2c_transfer [2022-07-13 23:23:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure i2c_transfer [2022-07-13 23:23:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure samsung_smt_7020_tuner_set_params [2022-07-13 23:23:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure samsung_smt_7020_tuner_set_params [2022-07-13 23:23:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_put [2022-07-13 23:23:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_put [2022-07-13 23:23:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_dvb_gate_ctrl [2022-07-13 23:23:21,783 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_dvb_gate_ctrl [2022-07-13 23:23:21,783 INFO L130 BoogieDeclarations]: Found specification of procedure cx24116_set_ts_param [2022-07-13 23:23:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24116_set_ts_param [2022-07-13 23:23:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_buf_prepare [2022-07-13 23:23:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_buf_prepare [2022-07-13 23:23:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-13 23:23:21,784 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_advise_acquire [2022-07-13 23:23:21,784 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_advise_acquire [2022-07-13 23:23:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock [2022-07-13 23:23:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure mutex_lock [2022-07-13 23:23:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-13 23:23:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~TO~VOID [2022-07-13 23:23:21,785 INFO L130 BoogieDeclarations]: Found specification of procedure cx88_dvb_bus_ctrl [2022-07-13 23:23:21,785 INFO L138 BoogieDeclarations]: Found implementation of procedure cx88_dvb_bus_ctrl [2022-07-13 23:23:21,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 23:23:21,786 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-07-13 23:23:21,786 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~TO~int [2022-07-13 23:23:21,786 INFO L130 BoogieDeclarations]: Found specification of procedure __const_udelay [2022-07-13 23:23:21,787 INFO L138 BoogieDeclarations]: Found implementation of procedure __const_udelay [2022-07-13 23:23:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 23:23:21,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 23:23:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure mt352_write [2022-07-13 23:23:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure mt352_write [2022-07-13 23:23:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure nxt200x_set_ts_param [2022-07-13 23:23:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure nxt200x_set_ts_param [2022-07-13 23:23:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~int [2022-07-13 23:23:21,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~int [2022-07-13 23:23:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 23:23:21,788 INFO L130 BoogieDeclarations]: Found specification of procedure __symbol_get [2022-07-13 23:23:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure __symbol_get [2022-07-13 23:23:21,789 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-13 23:23:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~int~TO~int [2022-07-13 23:23:21,789 INFO L130 BoogieDeclarations]: Found specification of procedure or51132_set_ts_param [2022-07-13 23:23:21,789 INFO L138 BoogieDeclarations]: Found implementation of procedure or51132_set_ts_param [2022-07-13 23:23:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure cx8802_dvb_probe [2022-07-13 23:23:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure cx8802_dvb_probe [2022-07-13 23:23:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dvb_get_frontend [2022-07-13 23:23:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dvb_get_frontend [2022-07-13 23:23:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure cx24116_reset_device [2022-07-13 23:23:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24116_reset_device [2022-07-13 23:23:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2022-07-13 23:23:21,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~$Pointer$~X~int~TO~$Pointer$ [2022-07-13 23:23:21,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 23:23:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure dvico_dual_demod_init [2022-07-13 23:23:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure dvico_dual_demod_init [2022-07-13 23:23:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 23:23:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure dntv_live_dvbt_pro_demod_init [2022-07-13 23:23:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure dntv_live_dvbt_pro_demod_init [2022-07-13 23:23:21,791 INFO L130 BoogieDeclarations]: Found specification of procedure stb6100_get_bandw [2022-07-13 23:23:21,791 INFO L138 BoogieDeclarations]: Found implementation of procedure stb6100_get_bandw [2022-07-13 23:23:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure cx24123_set_ts_param [2022-07-13 23:23:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure cx24123_set_ts_param [2022-07-13 23:23:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-13 23:23:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~TO~int [2022-07-13 23:23:21,792 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-13 23:23:21,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~int~TO~$Pointer$ [2022-07-13 23:23:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure lgdt330x_set_ts_param [2022-07-13 23:23:21,793 INFO L138 BoogieDeclarations]: Found implementation of procedure lgdt330x_set_ts_param [2022-07-13 23:23:21,793 INFO L130 BoogieDeclarations]: Found specification of procedure dvb_register [2022-07-13 23:23:21,793 INFO L138 BoogieDeclarations]: Found implementation of procedure dvb_register [2022-07-13 23:23:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure readl [2022-07-13 23:23:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure readl [2022-07-13 23:23:21,794 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~$Pointer$ [2022-07-13 23:23:21,794 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~~u8~0~X~~u8~0~X~~u8~0~TO~$Pointer$ [2022-07-13 23:23:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure videobuf_dvb_dealloc_frontends [2022-07-13 23:23:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure videobuf_dvb_dealloc_frontends [2022-07-13 23:23:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure writel [2022-07-13 23:23:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure writel [2022-07-13 23:23:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 23:23:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_handler_precall [2022-07-13 23:23:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_handler_precall [2022-07-13 23:23:21,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 23:23:21,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 23:23:21,796 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-13 23:23:21,796 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~$Pointer$~X~$Pointer$~TO~$Pointer$ [2022-07-13 23:23:22,427 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 23:23:22,429 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 23:23:28,728 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 23:23:28,746 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 23:23:28,747 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 23:23:28,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:23:28 BoogieIcfgContainer [2022-07-13 23:23:28,751 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 23:23:28,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 23:23:28,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 23:23:28,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 23:23:28,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 11:23:19" (1/3) ... [2022-07-13 23:23:28,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e68969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:23:28, skipping insertion in model container [2022-07-13 23:23:28,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 11:23:21" (2/3) ... [2022-07-13 23:23:28,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46e68969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 11:23:28, skipping insertion in model container [2022-07-13 23:23:28,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 11:23:28" (3/3) ... [2022-07-13 23:23:28,762 INFO L111 eAbstractionObserver]: Analyzing ICFG m0_drivers-media-video-cx88-cx88-dvb-ko--32_7a--d47b389.i [2022-07-13 23:23:28,771 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 23:23:28,771 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 23:23:28,836 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 23:23:28,842 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@1d483c7a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4e9fc9fb [2022-07-13 23:23:28,842 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 23:23:28,850 INFO L276 IsEmpty]: Start isEmpty. Operand has 1938 states, 1297 states have (on average 1.3824209714726292) internal successors, (1793), 1390 states have internal predecessors, (1793), 588 states have call successors, (588), 51 states have call predecessors, (588), 51 states have return successors, (588), 587 states have call predecessors, (588), 588 states have call successors, (588) [2022-07-13 23:23:28,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-13 23:23:28,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:28,855 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:23:28,856 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:28,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:28,859 INFO L85 PathProgramCache]: Analyzing trace with hash 983380094, now seen corresponding path program 1 times [2022-07-13 23:23:28,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:28,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309000339] [2022-07-13 23:23:28,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:28,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:29,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:29,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:23:29,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:29,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:23:29,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:29,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309000339] [2022-07-13 23:23:29,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309000339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:29,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:29,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:23:29,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808300824] [2022-07-13 23:23:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:29,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:23:29,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:29,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:23:29,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:29,412 INFO L87 Difference]: Start difference. First operand has 1938 states, 1297 states have (on average 1.3824209714726292) internal successors, (1793), 1390 states have internal predecessors, (1793), 588 states have call successors, (588), 51 states have call predecessors, (588), 51 states have return successors, (588), 587 states have call predecessors, (588), 588 states have call successors, (588) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:29,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:29,653 INFO L93 Difference]: Finished difference Result 5574 states and 8588 transitions. [2022-07-13 23:23:29,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:23:29,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-07-13 23:23:29,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:29,684 INFO L225 Difference]: With dead ends: 5574 [2022-07-13 23:23:29,684 INFO L226 Difference]: Without dead ends: 3640 [2022-07-13 23:23:29,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:29,698 INFO L413 NwaCegarLoop]: 3489 mSDtfsCounter, 2902 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2902 SdHoareTripleChecker+Valid, 6153 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:29,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2902 Valid, 6153 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 23:23:29,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-07-13 23:23:29,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3637. [2022-07-13 23:23:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3637 states, 2447 states have (on average 1.3796485492439723) internal successors, (3376), 2620 states have internal predecessors, (3376), 1093 states have call successors, (1093), 96 states have call predecessors, (1093), 96 states have return successors, (1106), 1088 states have call predecessors, (1106), 1087 states have call successors, (1106) [2022-07-13 23:23:29,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3637 states to 3637 states and 5575 transitions. [2022-07-13 23:23:29,959 INFO L78 Accepts]: Start accepts. Automaton has 3637 states and 5575 transitions. Word has length 14 [2022-07-13 23:23:29,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:29,960 INFO L495 AbstractCegarLoop]: Abstraction has 3637 states and 5575 transitions. [2022-07-13 23:23:29,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:29,960 INFO L276 IsEmpty]: Start isEmpty. Operand 3637 states and 5575 transitions. [2022-07-13 23:23:29,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-13 23:23:29,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:29,962 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:23:29,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 23:23:29,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:29,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:29,963 INFO L85 PathProgramCache]: Analyzing trace with hash 418913757, now seen corresponding path program 1 times [2022-07-13 23:23:29,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:29,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202524973] [2022-07-13 23:23:29,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:29,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:23:30,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:30,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:23:30,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:30,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202524973] [2022-07-13 23:23:30,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202524973] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:30,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:30,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:23:30,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925930661] [2022-07-13 23:23:30,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:30,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:23:30,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:30,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:23:30,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:30,209 INFO L87 Difference]: Start difference. First operand 3637 states and 5575 transitions. Second operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:30,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:30,296 INFO L93 Difference]: Finished difference Result 3639 states and 5576 transitions. [2022-07-13 23:23:30,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:23:30,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-07-13 23:23:30,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:30,309 INFO L225 Difference]: With dead ends: 3639 [2022-07-13 23:23:30,309 INFO L226 Difference]: Without dead ends: 3636 [2022-07-13 23:23:30,311 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:30,311 INFO L413 NwaCegarLoop]: 2951 mSDtfsCounter, 2942 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2942 SdHoareTripleChecker+Valid, 2951 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:30,312 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2942 Valid, 2951 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 23:23:30,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3636 states. [2022-07-13 23:23:30,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3636 to 3636. [2022-07-13 23:23:30,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3636 states, 2447 states have (on average 1.3792398855741725) internal successors, (3375), 2619 states have internal predecessors, (3375), 1092 states have call successors, (1092), 96 states have call predecessors, (1092), 96 states have return successors, (1106), 1088 states have call predecessors, (1106), 1087 states have call successors, (1106) [2022-07-13 23:23:30,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 5573 transitions. [2022-07-13 23:23:30,517 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 5573 transitions. Word has length 15 [2022-07-13 23:23:30,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:30,518 INFO L495 AbstractCegarLoop]: Abstraction has 3636 states and 5573 transitions. [2022-07-13 23:23:30,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:30,518 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 5573 transitions. [2022-07-13 23:23:30,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-13 23:23:30,519 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:30,519 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:23:30,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 23:23:30,520 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:30,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:30,520 INFO L85 PathProgramCache]: Analyzing trace with hash 100331361, now seen corresponding path program 1 times [2022-07-13 23:23:30,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:30,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305531252] [2022-07-13 23:23:30,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:30,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:30,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:30,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:23:30,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:23:30,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:30,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305531252] [2022-07-13 23:23:30,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305531252] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:30,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:30,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:23:30,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944536752] [2022-07-13 23:23:30,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:30,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:23:30,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:30,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:23:30,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:30,718 INFO L87 Difference]: Start difference. First operand 3636 states and 5573 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:30,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:30,830 INFO L93 Difference]: Finished difference Result 3638 states and 5574 transitions. [2022-07-13 23:23:30,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:23:30,831 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2022-07-13 23:23:30,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:30,845 INFO L225 Difference]: With dead ends: 3638 [2022-07-13 23:23:30,846 INFO L226 Difference]: Without dead ends: 3635 [2022-07-13 23:23:30,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:30,863 INFO L413 NwaCegarLoop]: 2949 mSDtfsCounter, 2939 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2939 SdHoareTripleChecker+Valid, 2949 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:30,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2939 Valid, 2949 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 23:23:30,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3635 states. [2022-07-13 23:23:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3635 to 3635. [2022-07-13 23:23:31,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3635 states, 2447 states have (on average 1.3788312219043728) internal successors, (3374), 2618 states have internal predecessors, (3374), 1091 states have call successors, (1091), 96 states have call predecessors, (1091), 96 states have return successors, (1106), 1088 states have call predecessors, (1106), 1087 states have call successors, (1106) [2022-07-13 23:23:31,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3635 states to 3635 states and 5571 transitions. [2022-07-13 23:23:31,045 INFO L78 Accepts]: Start accepts. Automaton has 3635 states and 5571 transitions. Word has length 16 [2022-07-13 23:23:31,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:31,046 INFO L495 AbstractCegarLoop]: Abstraction has 3635 states and 5571 transitions. [2022-07-13 23:23:31,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:31,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3635 states and 5571 transitions. [2022-07-13 23:23:31,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-07-13 23:23:31,047 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:31,047 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:23:31,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 23:23:31,047 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:31,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:31,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1185783456, now seen corresponding path program 1 times [2022-07-13 23:23:31,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:31,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541042191] [2022-07-13 23:23:31,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:31,048 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:31,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:31,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:23:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:23:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:31,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541042191] [2022-07-13 23:23:31,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541042191] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:31,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:31,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:23:31,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890956307] [2022-07-13 23:23:31,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:31,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:23:31,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:31,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:23:31,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:31,181 INFO L87 Difference]: Start difference. First operand 3635 states and 5571 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:31,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:31,324 INFO L93 Difference]: Finished difference Result 3637 states and 5572 transitions. [2022-07-13 23:23:31,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:23:31,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2022-07-13 23:23:31,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:31,348 INFO L225 Difference]: With dead ends: 3637 [2022-07-13 23:23:31,348 INFO L226 Difference]: Without dead ends: 3634 [2022-07-13 23:23:31,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:31,350 INFO L413 NwaCegarLoop]: 2947 mSDtfsCounter, 2936 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2936 SdHoareTripleChecker+Valid, 2947 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:31,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2936 Valid, 2947 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 23:23:31,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-07-13 23:23:31,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2022-07-13 23:23:31,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 2447 states have (on average 1.378422558234573) internal successors, (3373), 2617 states have internal predecessors, (3373), 1090 states have call successors, (1090), 96 states have call predecessors, (1090), 96 states have return successors, (1106), 1088 states have call predecessors, (1106), 1087 states have call successors, (1106) [2022-07-13 23:23:31,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5569 transitions. [2022-07-13 23:23:31,489 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5569 transitions. Word has length 17 [2022-07-13 23:23:31,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:31,490 INFO L495 AbstractCegarLoop]: Abstraction has 3634 states and 5569 transitions. [2022-07-13 23:23:31,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:31,491 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5569 transitions. [2022-07-13 23:23:31,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-13 23:23:31,492 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:31,492 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:23:31,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 23:23:31,492 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:31,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:31,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1894335044, now seen corresponding path program 1 times [2022-07-13 23:23:31,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:31,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561458093] [2022-07-13 23:23:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:31,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:31,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:23:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:31,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 23:23:31,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:31,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561458093] [2022-07-13 23:23:31,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561458093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:31,670 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:31,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 23:23:31,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500753106] [2022-07-13 23:23:31,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:31,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:23:31,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:31,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:23:31,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:31,672 INFO L87 Difference]: Start difference. First operand 3634 states and 5569 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:31,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:31,757 INFO L93 Difference]: Finished difference Result 3636 states and 5570 transitions. [2022-07-13 23:23:31,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:23:31,761 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-07-13 23:23:31,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:31,777 INFO L225 Difference]: With dead ends: 3636 [2022-07-13 23:23:31,777 INFO L226 Difference]: Without dead ends: 3623 [2022-07-13 23:23:31,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 23:23:31,780 INFO L413 NwaCegarLoop]: 2946 mSDtfsCounter, 2933 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 1 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2933 SdHoareTripleChecker+Valid, 2946 SdHoareTripleChecker+Invalid, 1 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 1 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:31,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2933 Valid, 2946 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 23:23:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3623 states. [2022-07-13 23:23:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3623 to 3623. [2022-07-13 23:23:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3623 states, 2438 states have (on average 1.3785890073831009) internal successors, (3361), 2607 states have internal predecessors, (3361), 1088 states have call successors, (1088), 96 states have call predecessors, (1088), 96 states have return successors, (1105), 1087 states have call predecessors, (1105), 1086 states have call successors, (1105) [2022-07-13 23:23:31,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3623 states to 3623 states and 5554 transitions. [2022-07-13 23:23:31,924 INFO L78 Accepts]: Start accepts. Automaton has 3623 states and 5554 transitions. Word has length 18 [2022-07-13 23:23:31,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:31,924 INFO L495 AbstractCegarLoop]: Abstraction has 3623 states and 5554 transitions. [2022-07-13 23:23:31,924 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-13 23:23:31,924 INFO L276 IsEmpty]: Start isEmpty. Operand 3623 states and 5554 transitions. [2022-07-13 23:23:31,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 23:23:31,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:31,945 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:23:31,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 23:23:31,945 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:31,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:31,946 INFO L85 PathProgramCache]: Analyzing trace with hash -400911686, now seen corresponding path program 1 times [2022-07-13 23:23:31,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:31,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425318081] [2022-07-13 23:23:31,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:31,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:23:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 23:23:32,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 23:23:32,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:32,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 23:23:32,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:32,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 23:23:32,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 23:23:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:32,242 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-13 23:23:32,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:32,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425318081] [2022-07-13 23:23:32,243 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425318081] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:32,243 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:32,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 23:23:32,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427433725] [2022-07-13 23:23:32,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:32,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:23:32,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:32,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:23:32,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:23:32,244 INFO L87 Difference]: Start difference. First operand 3623 states and 5554 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 23:23:38,667 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:23:42,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:42,309 INFO L93 Difference]: Finished difference Result 7333 states and 11735 transitions. [2022-07-13 23:23:42,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 23:23:42,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 137 [2022-07-13 23:23:42,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:42,328 INFO L225 Difference]: With dead ends: 7333 [2022-07-13 23:23:42,328 INFO L226 Difference]: Without dead ends: 3718 [2022-07-13 23:23:42,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:23:42,340 INFO L413 NwaCegarLoop]: 2933 mSDtfsCounter, 297 mSDsluCounter, 6534 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 598 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 9467 SdHoareTripleChecker+Invalid, 2265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 598 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:42,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 9467 Invalid, 2265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [598 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-07-13 23:23:42,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3718 states. [2022-07-13 23:23:42,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3718 to 3630. [2022-07-13 23:23:42,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3630 states, 2444 states have (on average 1.377659574468085) internal successors, (3367), 2614 states have internal predecessors, (3367), 1088 states have call successors, (1088), 96 states have call predecessors, (1088), 97 states have return successors, (1106), 1087 states have call predecessors, (1106), 1086 states have call successors, (1106) [2022-07-13 23:23:42,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3630 states to 3630 states and 5561 transitions. [2022-07-13 23:23:42,591 INFO L78 Accepts]: Start accepts. Automaton has 3630 states and 5561 transitions. Word has length 137 [2022-07-13 23:23:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:42,593 INFO L495 AbstractCegarLoop]: Abstraction has 3630 states and 5561 transitions. [2022-07-13 23:23:42,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 23:23:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3630 states and 5561 transitions. [2022-07-13 23:23:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-13 23:23:42,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:42,604 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:23:42,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 23:23:42,604 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash 409251297, now seen corresponding path program 1 times [2022-07-13 23:23:42,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:42,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425615388] [2022-07-13 23:23:42,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:42,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:23:42,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:23:42,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:42,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:23:42,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:23:42,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:42,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-13 23:23:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 23:23:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-13 23:23:42,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:42,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425615388] [2022-07-13 23:23:42,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425615388] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:42,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:42,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:23:42,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041484165] [2022-07-13 23:23:42,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:42,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:23:42,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:42,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:23:42,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:23:42,898 INFO L87 Difference]: Start difference. First operand 3630 states and 5561 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 23:23:45,606 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:23:47,059 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.45s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:23:49,113 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:23:50,558 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:23:52,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:23:52,218 INFO L93 Difference]: Finished difference Result 7327 states and 11730 transitions. [2022-07-13 23:23:52,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:23:52,219 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 139 [2022-07-13 23:23:52,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:23:52,235 INFO L225 Difference]: With dead ends: 7327 [2022-07-13 23:23:52,235 INFO L226 Difference]: Without dead ends: 3705 [2022-07-13 23:23:52,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:23:52,245 INFO L413 NwaCegarLoop]: 2938 mSDtfsCounter, 272 mSDsluCounter, 4089 mSDsCounter, 0 mSdLazyCounter, 1142 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 7027 SdHoareTripleChecker+Invalid, 1735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 1142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:23:52,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 7027 Invalid, 1735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [593 Valid, 1142 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-07-13 23:23:52,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3705 states. [2022-07-13 23:23:52,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3705 to 3632. [2022-07-13 23:23:52,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3632 states, 2446 states have (on average 1.3773507767784137) internal successors, (3369), 2616 states have internal predecessors, (3369), 1088 states have call successors, (1088), 96 states have call predecessors, (1088), 97 states have return successors, (1106), 1087 states have call predecessors, (1106), 1086 states have call successors, (1106) [2022-07-13 23:23:52,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3632 states to 3632 states and 5563 transitions. [2022-07-13 23:23:52,462 INFO L78 Accepts]: Start accepts. Automaton has 3632 states and 5563 transitions. Word has length 139 [2022-07-13 23:23:52,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:23:52,464 INFO L495 AbstractCegarLoop]: Abstraction has 3632 states and 5563 transitions. [2022-07-13 23:23:52,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 23:23:52,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3632 states and 5563 transitions. [2022-07-13 23:23:52,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-13 23:23:52,469 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:23:52,469 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-13 23:23:52,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 23:23:52,469 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:23:52,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:23:52,470 INFO L85 PathProgramCache]: Analyzing trace with hash -102740549, now seen corresponding path program 1 times [2022-07-13 23:23:52,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:23:52,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796608384] [2022-07-13 23:23:52,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:23:52,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:23:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:23:52,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:23:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:52,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:23:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:23:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:23:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 23:23:52,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 23:23:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:23:52,788 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-13 23:23:52,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:23:52,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796608384] [2022-07-13 23:23:52,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796608384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:23:52,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:23:52,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:23:52,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680697818] [2022-07-13 23:23:52,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:23:52,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:23:52,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:23:52,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:23:52,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:23:52,791 INFO L87 Difference]: Start difference. First operand 3632 states and 5563 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 23:23:55,192 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.36s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:00,203 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:02,254 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:06,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:06,104 INFO L93 Difference]: Finished difference Result 5648 states and 9037 transitions. [2022-07-13 23:24:06,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:24:06,105 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 141 [2022-07-13 23:24:06,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:06,123 INFO L225 Difference]: With dead ends: 5648 [2022-07-13 23:24:06,139 INFO L226 Difference]: Without dead ends: 3695 [2022-07-13 23:24:06,145 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:24:06,147 INFO L413 NwaCegarLoop]: 5534 mSDtfsCounter, 2620 mSDsluCounter, 5463 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 794 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3045 SdHoareTripleChecker+Valid, 10997 SdHoareTripleChecker+Invalid, 2474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 794 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:06,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3045 Valid, 10997 Invalid, 2474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [794 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 13.1s Time] [2022-07-13 23:24:06,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3695 states. [2022-07-13 23:24:06,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3695 to 3620. [2022-07-13 23:24:06,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3620 states, 2437 states have (on average 1.3779236766516207) internal successors, (3358), 2607 states have internal predecessors, (3358), 1087 states have call successors, (1087), 96 states have call predecessors, (1087), 95 states have return successors, (1086), 1084 states have call predecessors, (1086), 1086 states have call successors, (1086) [2022-07-13 23:24:06,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3620 states to 3620 states and 5531 transitions. [2022-07-13 23:24:06,337 INFO L78 Accepts]: Start accepts. Automaton has 3620 states and 5531 transitions. Word has length 141 [2022-07-13 23:24:06,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:06,338 INFO L495 AbstractCegarLoop]: Abstraction has 3620 states and 5531 transitions. [2022-07-13 23:24:06,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (13), 3 states have call predecessors, (13), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 23:24:06,338 INFO L276 IsEmpty]: Start isEmpty. Operand 3620 states and 5531 transitions. [2022-07-13 23:24:06,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-13 23:24:06,348 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:06,348 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:24:06,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 23:24:06,348 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:06,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:06,349 INFO L85 PathProgramCache]: Analyzing trace with hash -741859133, now seen corresponding path program 1 times [2022-07-13 23:24:06,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:06,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005681641] [2022-07-13 23:24:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:06,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:06,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:24:06,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:24:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:24:06,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:24:06,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 23:24:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 23:24:06,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 23:24:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 23:24:06,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:06,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-13 23:24:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:06,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:06,855 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-13 23:24:06,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:06,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005681641] [2022-07-13 23:24:06,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005681641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:24:06,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:24:06,855 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 23:24:06,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925067403] [2022-07-13 23:24:06,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:06,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 23:24:06,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:06,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 23:24:06,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:24:06,857 INFO L87 Difference]: Start difference. First operand 3620 states and 5531 transitions. Second operand has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 23:24:14,320 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:18,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:18,741 INFO L93 Difference]: Finished difference Result 7442 states and 11802 transitions. [2022-07-13 23:24:18,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 23:24:18,742 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 228 [2022-07-13 23:24:18,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:18,757 INFO L225 Difference]: With dead ends: 7442 [2022-07-13 23:24:18,757 INFO L226 Difference]: Without dead ends: 3830 [2022-07-13 23:24:18,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:24:18,769 INFO L413 NwaCegarLoop]: 2989 mSDtfsCounter, 456 mSDsluCounter, 11803 mSDsCounter, 0 mSdLazyCounter, 2815 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 14792 SdHoareTripleChecker+Invalid, 3484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 2815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:18,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [509 Valid, 14792 Invalid, 3484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [669 Valid, 2815 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-07-13 23:24:18,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3830 states. [2022-07-13 23:24:18,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3830 to 3722. [2022-07-13 23:24:18,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3722 states, 2509 states have (on average 1.3754483858110802) internal successors, (3451), 2679 states have internal predecessors, (3451), 1113 states have call successors, (1113), 100 states have call predecessors, (1113), 99 states have return successors, (1112), 1110 states have call predecessors, (1112), 1112 states have call successors, (1112) [2022-07-13 23:24:19,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5676 transitions. [2022-07-13 23:24:19,005 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5676 transitions. Word has length 228 [2022-07-13 23:24:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:19,006 INFO L495 AbstractCegarLoop]: Abstraction has 3722 states and 5676 transitions. [2022-07-13 23:24:19,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.571428571428573) internal successors, (158), 4 states have internal predecessors, (158), 4 states have call successors, (21), 5 states have call predecessors, (21), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 23:24:19,006 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5676 transitions. [2022-07-13 23:24:19,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-13 23:24:19,015 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:19,015 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:24:19,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 23:24:19,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1549007365, now seen corresponding path program 1 times [2022-07-13 23:24:19,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:19,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628727981] [2022-07-13 23:24:19,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:19,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:19,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:24:19,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:24:19,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:19,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:24:19,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:19,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:24:19,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 23:24:19,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 23:24:19,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 23:24:19,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:19,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 23:24:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:19,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-13 23:24:19,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:19,633 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-13 23:24:19,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:19,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628727981] [2022-07-13 23:24:19,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628727981] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:24:19,634 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:24:19,634 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:24:19,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194731002] [2022-07-13 23:24:19,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:19,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:24:19,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:19,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:24:19,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:24:19,636 INFO L87 Difference]: Start difference. First operand 3722 states and 5676 transitions. Second operand has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 23:24:21,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:24,353 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:25,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:25,938 INFO L93 Difference]: Finished difference Result 7526 states and 11964 transitions. [2022-07-13 23:24:25,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:24:25,939 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 228 [2022-07-13 23:24:25,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:25,954 INFO L225 Difference]: With dead ends: 7526 [2022-07-13 23:24:25,954 INFO L226 Difference]: Without dead ends: 3812 [2022-07-13 23:24:25,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:24:25,968 INFO L413 NwaCegarLoop]: 3015 mSDtfsCounter, 2805 mSDsluCounter, 1694 mSDsCounter, 0 mSdLazyCounter, 636 mSolverCounterSat, 791 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3132 SdHoareTripleChecker+Valid, 4709 SdHoareTripleChecker+Invalid, 1427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 791 IncrementalHoareTripleChecker+Valid, 636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:25,969 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3132 Valid, 4709 Invalid, 1427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [791 Valid, 636 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-07-13 23:24:25,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3812 states. [2022-07-13 23:24:26,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3812 to 3722. [2022-07-13 23:24:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3722 states, 2509 states have (on average 1.3698684734954165) internal successors, (3437), 2679 states have internal predecessors, (3437), 1113 states have call successors, (1113), 100 states have call predecessors, (1113), 99 states have return successors, (1112), 1110 states have call predecessors, (1112), 1112 states have call successors, (1112) [2022-07-13 23:24:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3722 states to 3722 states and 5662 transitions. [2022-07-13 23:24:26,200 INFO L78 Accepts]: Start accepts. Automaton has 3722 states and 5662 transitions. Word has length 228 [2022-07-13 23:24:26,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:26,201 INFO L495 AbstractCegarLoop]: Abstraction has 3722 states and 5662 transitions. [2022-07-13 23:24:26,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.25) internal successors, (113), 3 states have internal predecessors, (113), 3 states have call successors, (15), 4 states have call predecessors, (15), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 23:24:26,201 INFO L276 IsEmpty]: Start isEmpty. Operand 3722 states and 5662 transitions. [2022-07-13 23:24:26,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-13 23:24:26,212 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:26,213 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:24:26,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 23:24:26,213 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:26,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:26,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1801960069, now seen corresponding path program 1 times [2022-07-13 23:24:26,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:26,214 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779745351] [2022-07-13 23:24:26,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:26,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:26,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:24:26,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:24:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:24:26,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:26,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:24:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:26,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 23:24:26,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 23:24:26,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 23:24:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 23:24:26,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:26,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-13 23:24:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:26,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:26,722 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-13 23:24:26,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:26,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779745351] [2022-07-13 23:24:26,723 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779745351] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:24:26,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1418040261] [2022-07-13 23:24:26,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:26,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:24:26,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:24:26,725 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) [2022-07-13 23:24:26,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 23:24:27,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:27,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 4738 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-13 23:24:27,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:24:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 111 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-13 23:24:27,945 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:24:27,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1418040261] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:24:27,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:24:27,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-13 23:24:27,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062431015] [2022-07-13 23:24:27,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:27,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 23:24:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 23:24:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:24:27,947 INFO L87 Difference]: Start difference. First operand 3722 states and 5662 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 23:24:28,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:28,044 INFO L93 Difference]: Finished difference Result 7496 states and 11429 transitions. [2022-07-13 23:24:28,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 23:24:28,044 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 228 [2022-07-13 23:24:28,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:28,054 INFO L225 Difference]: With dead ends: 7496 [2022-07-13 23:24:28,054 INFO L226 Difference]: Without dead ends: 3782 [2022-07-13 23:24:28,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 258 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-13 23:24:28,064 INFO L413 NwaCegarLoop]: 2926 mSDtfsCounter, 1134 mSDsluCounter, 1412 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1514 SdHoareTripleChecker+Valid, 4338 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:28,065 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1514 Valid, 4338 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 23:24:28,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3782 states. [2022-07-13 23:24:28,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3782 to 3734. [2022-07-13 23:24:28,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3734 states, 2521 states have (on average 1.3704879016263387) internal successors, (3455), 2691 states have internal predecessors, (3455), 1113 states have call successors, (1113), 100 states have call predecessors, (1113), 99 states have return successors, (1112), 1110 states have call predecessors, (1112), 1112 states have call successors, (1112) [2022-07-13 23:24:28,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3734 states to 3734 states and 5680 transitions. [2022-07-13 23:24:28,205 INFO L78 Accepts]: Start accepts. Automaton has 3734 states and 5680 transitions. Word has length 228 [2022-07-13 23:24:28,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:28,205 INFO L495 AbstractCegarLoop]: Abstraction has 3734 states and 5680 transitions. [2022-07-13 23:24:28,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 23:24:28,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3734 states and 5680 transitions. [2022-07-13 23:24:28,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-13 23:24:28,215 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:28,215 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:24:28,242 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-13 23:24:28,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-13 23:24:28,435 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:28,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:28,436 INFO L85 PathProgramCache]: Analyzing trace with hash 974849929, now seen corresponding path program 1 times [2022-07-13 23:24:28,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:28,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428554404] [2022-07-13 23:24:28,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:28,436 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:28,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:24:28,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:24:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:28,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:24:28,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:24:28,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:28,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 23:24:28,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 23:24:28,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 23:24:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:28,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 23:24:28,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:28,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-13 23:24:28,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:28,768 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-13 23:24:28,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:28,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428554404] [2022-07-13 23:24:28,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428554404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:24:28,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:24:28,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-13 23:24:28,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789184287] [2022-07-13 23:24:28,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:28,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:24:28,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:28,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:24:28,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:24:28,771 INFO L87 Difference]: Start difference. First operand 3734 states and 5680 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:24:30,440 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:33,278 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:36,179 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:37,373 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:39,563 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:41,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:41,658 INFO L93 Difference]: Finished difference Result 7604 states and 12035 transitions. [2022-07-13 23:24:41,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 23:24:41,658 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 228 [2022-07-13 23:24:41,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:41,685 INFO L225 Difference]: With dead ends: 7604 [2022-07-13 23:24:41,686 INFO L226 Difference]: Without dead ends: 3876 [2022-07-13 23:24:41,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-13 23:24:41,696 INFO L413 NwaCegarLoop]: 2987 mSDtfsCounter, 353 mSDsluCounter, 6524 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 594 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 9511 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 594 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.7s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:41,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 9511 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [594 Valid, 1668 Invalid, 1 Unknown, 0 Unchecked, 12.7s Time] [2022-07-13 23:24:41,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3876 states. [2022-07-13 23:24:41,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3876 to 3736. [2022-07-13 23:24:41,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3736 states, 2523 states have (on average 1.3694015061434799) internal successors, (3455), 2693 states have internal predecessors, (3455), 1113 states have call successors, (1113), 100 states have call predecessors, (1113), 99 states have return successors, (1112), 1110 states have call predecessors, (1112), 1112 states have call successors, (1112) [2022-07-13 23:24:41,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3736 states to 3736 states and 5680 transitions. [2022-07-13 23:24:41,888 INFO L78 Accepts]: Start accepts. Automaton has 3736 states and 5680 transitions. Word has length 228 [2022-07-13 23:24:41,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:41,888 INFO L495 AbstractCegarLoop]: Abstraction has 3736 states and 5680 transitions. [2022-07-13 23:24:41,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 4 states have internal predecessors, (145), 2 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 23:24:41,888 INFO L276 IsEmpty]: Start isEmpty. Operand 3736 states and 5680 transitions. [2022-07-13 23:24:41,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-13 23:24:41,898 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:41,899 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:24:41,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 23:24:41,899 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:41,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:41,899 INFO L85 PathProgramCache]: Analyzing trace with hash 764046341, now seen corresponding path program 1 times [2022-07-13 23:24:41,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:41,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796147810] [2022-07-13 23:24:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:41,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:24:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:24:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:24:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:42,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:24:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:42,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 23:24:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 23:24:42,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-13 23:24:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:42,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 23:24:42,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-13 23:24:42,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:42,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-13 23:24:42,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:42,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796147810] [2022-07-13 23:24:42,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796147810] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:24:42,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172969288] [2022-07-13 23:24:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:42,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:24:42,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:24:42,394 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) [2022-07-13 23:24:42,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 23:24:43,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:43,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 4706 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-13 23:24:43,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:24:43,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:24:43,661 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:24:43,685 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2022-07-13 23:24:43,688 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-07-13 23:24:43,698 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 20 proven. 16 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-13 23:24:43,698 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:24:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-13 23:24:43,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172969288] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 23:24:43,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:24:43,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 15 [2022-07-13 23:24:43,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210853065] [2022-07-13 23:24:43,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:43,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:24:43,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:43,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:24:43,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-13 23:24:43,799 INFO L87 Difference]: Start difference. First operand 3736 states and 5680 transitions. Second operand has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 23:24:47,837 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:48,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:48,140 INFO L93 Difference]: Finished difference Result 7514 states and 11448 transitions. [2022-07-13 23:24:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 23:24:48,141 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 228 [2022-07-13 23:24:48,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:48,151 INFO L225 Difference]: With dead ends: 7514 [2022-07-13 23:24:48,151 INFO L226 Difference]: Without dead ends: 3786 [2022-07-13 23:24:48,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 481 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-13 23:24:48,161 INFO L413 NwaCegarLoop]: 2945 mSDtfsCounter, 41 mSDsluCounter, 8529 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 18 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 11474 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:48,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 11474 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 271 Invalid, 1 Unknown, 0 Unchecked, 4.2s Time] [2022-07-13 23:24:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3786 states. [2022-07-13 23:24:48,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3786 to 3772. [2022-07-13 23:24:48,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3772 states, 2549 states have (on average 1.369556688897607) internal successors, (3491), 2721 states have internal predecessors, (3491), 1123 states have call successors, (1123), 100 states have call predecessors, (1123), 99 states have return successors, (1122), 1120 states have call predecessors, (1122), 1122 states have call successors, (1122) [2022-07-13 23:24:48,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3772 states to 3772 states and 5736 transitions. [2022-07-13 23:24:48,291 INFO L78 Accepts]: Start accepts. Automaton has 3772 states and 5736 transitions. Word has length 228 [2022-07-13 23:24:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:48,291 INFO L495 AbstractCegarLoop]: Abstraction has 3772 states and 5736 transitions. [2022-07-13 23:24:48,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.6) internal successors, (138), 5 states have internal predecessors, (138), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 23:24:48,291 INFO L276 IsEmpty]: Start isEmpty. Operand 3772 states and 5736 transitions. [2022-07-13 23:24:48,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-13 23:24:48,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:48,300 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:24:48,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 23:24:48,517 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,SelfDestructingSolverStorable12 [2022-07-13 23:24:48,518 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:48,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:48,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1231334777, now seen corresponding path program 1 times [2022-07-13 23:24:48,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:48,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051849840] [2022-07-13 23:24:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:48,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:48,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:24:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:24:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 23:24:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:48,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 23:24:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:48,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 23:24:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 23:24:48,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-13 23:24:48,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:48,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-13 23:24:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:48,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-13 23:24:48,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2022-07-13 23:24:48,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:48,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051849840] [2022-07-13 23:24:48,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051849840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:24:48,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:24:48,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 23:24:48,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327668015] [2022-07-13 23:24:48,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:48,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:24:48,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:48,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:24:48,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:24:48,826 INFO L87 Difference]: Start difference. First operand 3772 states and 5736 transitions. Second operand has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 23:24:50,684 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:52,858 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.48s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:24:57,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:24:57,726 INFO L93 Difference]: Finished difference Result 7698 states and 12175 transitions. [2022-07-13 23:24:57,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:24:57,726 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 242 [2022-07-13 23:24:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:24:57,738 INFO L225 Difference]: With dead ends: 7698 [2022-07-13 23:24:57,739 INFO L226 Difference]: Without dead ends: 3934 [2022-07-13 23:24:57,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 23:24:57,749 INFO L413 NwaCegarLoop]: 2993 mSDtfsCounter, 1367 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 1093 mSolverCounterSat, 675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1881 SdHoareTripleChecker+Valid, 5648 SdHoareTripleChecker+Invalid, 1768 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 675 IncrementalHoareTripleChecker+Valid, 1093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:24:57,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1881 Valid, 5648 Invalid, 1768 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [675 Valid, 1093 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-07-13 23:24:57,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3934 states. [2022-07-13 23:24:57,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3934 to 3834. [2022-07-13 23:24:57,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3834 states, 2611 states have (on average 1.3600153198008427) internal successors, (3551), 2783 states have internal predecessors, (3551), 1123 states have call successors, (1123), 100 states have call predecessors, (1123), 99 states have return successors, (1122), 1120 states have call predecessors, (1122), 1122 states have call successors, (1122) [2022-07-13 23:24:57,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3834 states to 3834 states and 5796 transitions. [2022-07-13 23:24:57,946 INFO L78 Accepts]: Start accepts. Automaton has 3834 states and 5796 transitions. Word has length 242 [2022-07-13 23:24:57,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:24:57,947 INFO L495 AbstractCegarLoop]: Abstraction has 3834 states and 5796 transitions. [2022-07-13 23:24:57,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 35.5) internal successors, (142), 3 states have internal predecessors, (142), 2 states have call successors, (17), 3 states have call predecessors, (17), 1 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-13 23:24:57,947 INFO L276 IsEmpty]: Start isEmpty. Operand 3834 states and 5796 transitions. [2022-07-13 23:24:57,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2022-07-13 23:24:57,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:24:57,959 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:24:57,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 23:24:57,959 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:24:57,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:24:57,960 INFO L85 PathProgramCache]: Analyzing trace with hash 135716423, now seen corresponding path program 1 times [2022-07-13 23:24:57,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:24:57,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781552643] [2022-07-13 23:24:57,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:57,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:24:58,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:24:58,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:24:58,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 23:24:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 23:24:58,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 23:24:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 23:24:58,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-13 23:24:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:58,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-13 23:24:58,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:58,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-13 23:24:58,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:24:58,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2022-07-13 23:24:58,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:24:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781552643] [2022-07-13 23:24:58,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781552643] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:24:58,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051328684] [2022-07-13 23:24:58,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:24:58,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:24:58,525 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:24:58,532 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) [2022-07-13 23:24:58,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 23:24:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:24:59,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 4722 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-13 23:24:59,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:24:59,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:24:59,681 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:24:59,708 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2022-07-13 23:24:59,710 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-07-13 23:24:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 20 proven. 23 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2022-07-13 23:24:59,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:24:59,824 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-13 23:24:59,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051328684] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 23:24:59,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:24:59,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 7] total 15 [2022-07-13 23:24:59,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902766942] [2022-07-13 23:24:59,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:24:59,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:24:59,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:24:59,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:24:59,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2022-07-13 23:24:59,826 INFO L87 Difference]: Start difference. First operand 3834 states and 5796 transitions. Second operand has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 23:25:01,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.38s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:25:03,942 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.70s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:25:04,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:25:04,260 INFO L93 Difference]: Finished difference Result 7710 states and 11680 transitions. [2022-07-13 23:25:04,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 23:25:04,260 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 242 [2022-07-13 23:25:04,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:25:04,271 INFO L225 Difference]: With dead ends: 7710 [2022-07-13 23:25:04,271 INFO L226 Difference]: Without dead ends: 3884 [2022-07-13 23:25:04,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 509 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-07-13 23:25:04,278 INFO L413 NwaCegarLoop]: 2943 mSDtfsCounter, 41 mSDsluCounter, 8523 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 11466 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:25:04,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 11466 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-13 23:25:04,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2022-07-13 23:25:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3866. [2022-07-13 23:25:04,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3866 states, 2633 states have (on average 1.3608051652107862) internal successors, (3583), 2807 states have internal predecessors, (3583), 1133 states have call successors, (1133), 100 states have call predecessors, (1133), 99 states have return successors, (1132), 1130 states have call predecessors, (1132), 1132 states have call successors, (1132) [2022-07-13 23:25:04,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3866 states to 3866 states and 5848 transitions. [2022-07-13 23:25:04,442 INFO L78 Accepts]: Start accepts. Automaton has 3866 states and 5848 transitions. Word has length 242 [2022-07-13 23:25:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:25:04,443 INFO L495 AbstractCegarLoop]: Abstraction has 3866 states and 5848 transitions. [2022-07-13 23:25:04,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.0) internal successors, (145), 5 states have internal predecessors, (145), 3 states have call successors, (19), 2 states have call predecessors, (19), 1 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-13 23:25:04,443 INFO L276 IsEmpty]: Start isEmpty. Operand 3866 states and 5848 transitions. [2022-07-13 23:25:04,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-13 23:25:04,452 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:25:04,452 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:25:04,481 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-13 23:25:04,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:04,667 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:25:04,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:25:04,668 INFO L85 PathProgramCache]: Analyzing trace with hash 502834811, now seen corresponding path program 1 times [2022-07-13 23:25:04,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:25:04,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045592167] [2022-07-13 23:25:04,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:04,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:25:04,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:25:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:25:05,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:05,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:25:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:05,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:25:05,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:05,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 23:25:05,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 23:25:05,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 23:25:05,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 23:25:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:05,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-13 23:25:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-13 23:25:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 23:25:05,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:05,260 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 22 proven. 15 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-13 23:25:05,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:25:05,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045592167] [2022-07-13 23:25:05,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045592167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:25:05,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712054954] [2022-07-13 23:25:05,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:05,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:05,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:25:05,262 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) [2022-07-13 23:25:05,287 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 23:25:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:06,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 4776 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-13 23:25:06,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:25:06,427 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 109 proven. 4 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 23:25:06,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:25:06,566 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 48 proven. 4 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2022-07-13 23:25:06,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712054954] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 23:25:06,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 23:25:06,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 15 [2022-07-13 23:25:06,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369997371] [2022-07-13 23:25:06,567 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 23:25:06,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-13 23:25:06,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:25:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-13 23:25:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-07-13 23:25:06,569 INFO L87 Difference]: Start difference. First operand 3866 states and 5848 transitions. Second operand has 15 states, 15 states have (on average 14.466666666666667) internal successors, (217), 10 states have internal predecessors, (217), 3 states have call successors, (40), 3 states have call predecessors, (40), 6 states have return successors, (27), 7 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-13 23:25:11,329 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:25:18,262 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.55s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:25:21,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.80s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:25:25,069 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:25:29,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:25:29,464 INFO L93 Difference]: Finished difference Result 7888 states and 12409 transitions. [2022-07-13 23:25:29,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 23:25:29,464 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 14.466666666666667) internal successors, (217), 10 states have internal predecessors, (217), 3 states have call successors, (40), 3 states have call predecessors, (40), 6 states have return successors, (27), 7 states have call predecessors, (27), 3 states have call successors, (27) Word has length 240 [2022-07-13 23:25:29,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:25:29,474 INFO L225 Difference]: With dead ends: 7888 [2022-07-13 23:25:29,474 INFO L226 Difference]: Without dead ends: 4030 [2022-07-13 23:25:29,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 506 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=396, Unknown=0, NotChecked=0, Total=462 [2022-07-13 23:25:29,483 INFO L413 NwaCegarLoop]: 2960 mSDtfsCounter, 1408 mSDsluCounter, 22698 mSDsCounter, 0 mSdLazyCounter, 5332 mSolverCounterSat, 605 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1971 SdHoareTripleChecker+Valid, 25658 SdHoareTripleChecker+Invalid, 5937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 605 IncrementalHoareTripleChecker+Valid, 5332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.6s IncrementalHoareTripleChecker+Time [2022-07-13 23:25:29,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1971 Valid, 25658 Invalid, 5937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [605 Valid, 5332 Invalid, 0 Unknown, 0 Unchecked, 22.6s Time] [2022-07-13 23:25:29,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4030 states. [2022-07-13 23:25:29,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4030 to 3878. [2022-07-13 23:25:29,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3878 states, 2641 states have (on average 1.3589549413101099) internal successors, (3589), 2815 states have internal predecessors, (3589), 1133 states have call successors, (1133), 100 states have call predecessors, (1133), 103 states have return successors, (1154), 1134 states have call predecessors, (1154), 1132 states have call successors, (1154) [2022-07-13 23:25:29,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3878 states to 3878 states and 5876 transitions. [2022-07-13 23:25:29,671 INFO L78 Accepts]: Start accepts. Automaton has 3878 states and 5876 transitions. Word has length 240 [2022-07-13 23:25:29,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:25:29,671 INFO L495 AbstractCegarLoop]: Abstraction has 3878 states and 5876 transitions. [2022-07-13 23:25:29,671 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 14.466666666666667) internal successors, (217), 10 states have internal predecessors, (217), 3 states have call successors, (40), 3 states have call predecessors, (40), 6 states have return successors, (27), 7 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-13 23:25:29,671 INFO L276 IsEmpty]: Start isEmpty. Operand 3878 states and 5876 transitions. [2022-07-13 23:25:29,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-13 23:25:29,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:25:29,683 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:25:29,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 23:25:29,908 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,SelfDestructingSolverStorable15 [2022-07-13 23:25:29,908 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:25:29,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:25:29,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1707745159, now seen corresponding path program 1 times [2022-07-13 23:25:29,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:25:29,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620958472] [2022-07-13 23:25:29,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:29,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:25:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:25:30,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:25:30,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:25:30,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:30,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:25:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:30,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 23:25:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 23:25:30,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 23:25:30,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 23:25:30,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-13 23:25:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:30,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-13 23:25:30,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 23:25:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:30,295 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-13 23:25:30,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:25:30,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620958472] [2022-07-13 23:25:30,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1620958472] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:25:30,298 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396464849] [2022-07-13 23:25:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:30,298 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:30,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:25:30,299 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) [2022-07-13 23:25:30,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 23:25:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:31,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 4794 conjuncts, 23 conjunts are in the unsatisfiable core [2022-07-13 23:25:31,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:25:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-07-13 23:25:31,580 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:25:31,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396464849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:25:31,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:25:31,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 13 [2022-07-13 23:25:31,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340714986] [2022-07-13 23:25:31,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:25:31,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 23:25:31,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:25:31,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 23:25:31,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-13 23:25:31,582 INFO L87 Difference]: Start difference. First operand 3878 states and 5876 transitions. Second operand has 8 states, 8 states have (on average 22.375) internal successors, (179), 7 states have internal predecessors, (179), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-13 23:25:31,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:25:31,794 INFO L93 Difference]: Finished difference Result 7826 states and 11868 transitions. [2022-07-13 23:25:31,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:25:31,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 7 states have internal predecessors, (179), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 240 [2022-07-13 23:25:31,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:25:31,809 INFO L225 Difference]: With dead ends: 7826 [2022-07-13 23:25:31,809 INFO L226 Difference]: Without dead ends: 3956 [2022-07-13 23:25:31,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 269 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-13 23:25:31,818 INFO L413 NwaCegarLoop]: 2925 mSDtfsCounter, 1159 mSDsluCounter, 16007 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1541 SdHoareTripleChecker+Valid, 18932 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:25:31,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1541 Valid, 18932 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-13 23:25:31,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3956 states. [2022-07-13 23:25:31,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3956 to 3884. [2022-07-13 23:25:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 2647 states have (on average 1.3581412920287117) internal successors, (3595), 2819 states have internal predecessors, (3595), 1133 states have call successors, (1133), 100 states have call predecessors, (1133), 103 states have return successors, (1154), 1136 states have call predecessors, (1154), 1132 states have call successors, (1154) [2022-07-13 23:25:31,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5882 transitions. [2022-07-13 23:25:31,986 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5882 transitions. Word has length 240 [2022-07-13 23:25:31,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:25:31,986 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 5882 transitions. [2022-07-13 23:25:31,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.375) internal successors, (179), 7 states have internal predecessors, (179), 3 states have call successors, (25), 2 states have call predecessors, (25), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-13 23:25:31,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5882 transitions. [2022-07-13 23:25:31,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-13 23:25:31,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:25:31,997 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:25:32,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 23:25:32,211 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,SelfDestructingSolverStorable16 [2022-07-13 23:25:32,211 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:25:32,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:25:32,212 INFO L85 PathProgramCache]: Analyzing trace with hash -576958534, now seen corresponding path program 2 times [2022-07-13 23:25:32,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:25:32,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47715489] [2022-07-13 23:25:32,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:32,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:25:32,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:25:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:25:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:25:32,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:32,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:25:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 23:25:32,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 23:25:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 23:25:32,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-13 23:25:32,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-13 23:25:32,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:32,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-13 23:25:32,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-13 23:25:32,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 28 proven. 19 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-13 23:25:32,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:25:32,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47715489] [2022-07-13 23:25:32,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47715489] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:25:32,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782747844] [2022-07-13 23:25:32,752 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 23:25:32,752 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:32,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:25:32,754 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) [2022-07-13 23:25:32,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-13 23:25:33,780 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 23:25:33,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 23:25:33,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 3856 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-13 23:25:33,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:25:33,859 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2022-07-13 23:25:33,859 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:25:33,859 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782747844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:25:33,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:25:33,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-13 23:25:33,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218920056] [2022-07-13 23:25:33,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:25:33,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:25:33,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:25:33,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:25:33,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-13 23:25:33,862 INFO L87 Difference]: Start difference. First operand 3884 states and 5882 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 23:25:33,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:25:33,963 INFO L93 Difference]: Finished difference Result 7820 states and 11865 transitions. [2022-07-13 23:25:33,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:25:33,964 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 240 [2022-07-13 23:25:33,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:25:33,974 INFO L225 Difference]: With dead ends: 7820 [2022-07-13 23:25:33,974 INFO L226 Difference]: Without dead ends: 3944 [2022-07-13 23:25:33,981 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-13 23:25:33,982 INFO L413 NwaCegarLoop]: 2980 mSDtfsCounter, 46 mSDsluCounter, 5903 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 8883 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 23:25:33,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 8883 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 23:25:33,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-07-13 23:25:34,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3884. [2022-07-13 23:25:34,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 2647 states have (on average 1.3573857196826595) internal successors, (3593), 2819 states have internal predecessors, (3593), 1133 states have call successors, (1133), 100 states have call predecessors, (1133), 103 states have return successors, (1154), 1136 states have call predecessors, (1154), 1132 states have call successors, (1154) [2022-07-13 23:25:34,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 5880 transitions. [2022-07-13 23:25:34,118 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 5880 transitions. Word has length 240 [2022-07-13 23:25:34,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:25:34,119 INFO L495 AbstractCegarLoop]: Abstraction has 3884 states and 5880 transitions. [2022-07-13 23:25:34,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 23:25:34,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 5880 transitions. [2022-07-13 23:25:34,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-13 23:25:34,126 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:25:34,126 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:25:34,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-13 23:25:34,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-13 23:25:34,348 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:25:34,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:25:34,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1738221158, now seen corresponding path program 1 times [2022-07-13 23:25:34,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:25:34,348 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673502227] [2022-07-13 23:25:34,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:34,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:25:34,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:25:34,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:25:34,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 23:25:34,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 23:25:34,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:34,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 23:25:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 23:25:34,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 23:25:34,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 23:25:34,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 23:25:34,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 23:25:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:34,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-13 23:25:34,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:34,789 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 35 proven. 19 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-13 23:25:34,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:25:34,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673502227] [2022-07-13 23:25:34,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673502227] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:25:34,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873315835] [2022-07-13 23:25:34,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:34,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:34,790 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:25:34,804 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) [2022-07-13 23:25:34,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-13 23:25:35,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:36,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 4819 conjuncts, 29 conjunts are in the unsatisfiable core [2022-07-13 23:25:36,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:25:36,127 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-13 23:25:36,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:25:36,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873315835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:25:36,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:25:36,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2022-07-13 23:25:36,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076239745] [2022-07-13 23:25:36,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:25:36,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 23:25:36,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:25:36,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 23:25:36,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 23:25:36,130 INFO L87 Difference]: Start difference. First operand 3884 states and 5880 transitions. Second operand has 8 states, 8 states have (on average 21.25) internal successors, (170), 6 states have internal predecessors, (170), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 23:25:36,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:25:36,569 INFO L93 Difference]: Finished difference Result 7820 states and 12312 transitions. [2022-07-13 23:25:36,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 23:25:36,569 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 6 states have internal predecessors, (170), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 254 [2022-07-13 23:25:36,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:25:36,580 INFO L225 Difference]: With dead ends: 7820 [2022-07-13 23:25:36,580 INFO L226 Difference]: Without dead ends: 3944 [2022-07-13 23:25:36,588 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 295 GetRequests, 284 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:25:36,588 INFO L413 NwaCegarLoop]: 2984 mSDtfsCounter, 47 mSDsluCounter, 17634 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 20618 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:25:36,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 20618 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-13 23:25:36,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3944 states. [2022-07-13 23:25:36,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3944 to 3896. [2022-07-13 23:25:36,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 2657 states have (on average 1.3560406473466315) internal successors, (3603), 2827 states have internal predecessors, (3603), 1133 states have call successors, (1133), 100 states have call predecessors, (1133), 105 states have return successors, (1604), 1140 states have call predecessors, (1604), 1132 states have call successors, (1604) [2022-07-13 23:25:36,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 6340 transitions. [2022-07-13 23:25:36,809 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 6340 transitions. Word has length 254 [2022-07-13 23:25:36,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:25:36,810 INFO L495 AbstractCegarLoop]: Abstraction has 3896 states and 6340 transitions. [2022-07-13 23:25:36,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 21.25) internal successors, (170), 6 states have internal predecessors, (170), 2 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 23:25:36,810 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 6340 transitions. [2022-07-13 23:25:36,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2022-07-13 23:25:36,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:25:36,820 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:25:36,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-13 23:25:37,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:37,042 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:25:37,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:25:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash 852430086, now seen corresponding path program 2 times [2022-07-13 23:25:37,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:25:37,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487384271] [2022-07-13 23:25:37,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:37,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:25:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:25:37,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:25:37,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:37,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 23:25:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:37,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 23:25:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:37,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 23:25:37,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-13 23:25:37,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 23:25:37,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-13 23:25:37,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:37,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-13 23:25:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 23:25:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:37,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 222 [2022-07-13 23:25:37,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:37,506 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 35 proven. 19 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-13 23:25:37,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:25:37,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487384271] [2022-07-13 23:25:37,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487384271] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:25:37,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526888432] [2022-07-13 23:25:37,507 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 23:25:37,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:37,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:25:37,524 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) [2022-07-13 23:25:37,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-13 23:25:38,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 23:25:38,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 23:25:38,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 3865 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 23:25:38,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:25:38,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 47 [2022-07-13 23:25:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2022-07-13 23:25:38,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:25:38,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526888432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:25:38,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:25:38,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-13 23:25:38,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57379542] [2022-07-13 23:25:38,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:25:38,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:25:38,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:25:38,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:25:38,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 23:25:38,612 INFO L87 Difference]: Start difference. First operand 3896 states and 6340 transitions. Second operand has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 23:25:40,430 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.13s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:25:44,729 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:25:45,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:25:45,178 INFO L93 Difference]: Finished difference Result 7804 states and 12718 transitions. [2022-07-13 23:25:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 23:25:45,179 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 254 [2022-07-13 23:25:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:25:45,189 INFO L225 Difference]: With dead ends: 7804 [2022-07-13 23:25:45,190 INFO L226 Difference]: Without dead ends: 3916 [2022-07-13 23:25:45,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:25:45,199 INFO L413 NwaCegarLoop]: 2925 mSDtfsCounter, 4 mSDsluCounter, 8276 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11201 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-13 23:25:45,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11201 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 6.5s Time] [2022-07-13 23:25:45,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3916 states. [2022-07-13 23:25:45,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3916 to 3896. [2022-07-13 23:25:45,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3896 states, 2657 states have (on average 1.3560406473466315) internal successors, (3603), 2827 states have internal predecessors, (3603), 1133 states have call successors, (1133), 100 states have call predecessors, (1133), 105 states have return successors, (1604), 1140 states have call predecessors, (1604), 1132 states have call successors, (1604) [2022-07-13 23:25:45,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3896 states to 3896 states and 6340 transitions. [2022-07-13 23:25:45,504 INFO L78 Accepts]: Start accepts. Automaton has 3896 states and 6340 transitions. Word has length 254 [2022-07-13 23:25:45,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:25:45,505 INFO L495 AbstractCegarLoop]: Abstraction has 3896 states and 6340 transitions. [2022-07-13 23:25:45,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.8) internal successors, (144), 5 states have internal predecessors, (144), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 23:25:45,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3896 states and 6340 transitions. [2022-07-13 23:25:45,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-07-13 23:25:45,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:25:45,514 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:25:45,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-13 23:25:45,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:45,740 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:25:45,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:25:45,740 INFO L85 PathProgramCache]: Analyzing trace with hash 219479446, now seen corresponding path program 1 times [2022-07-13 23:25:45,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:25:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329684294] [2022-07-13 23:25:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:45,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:25:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:45,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:25:45,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:45,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:25:45,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:45,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:45,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 23:25:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:45,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 23:25:46,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-13 23:25:46,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 23:25:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-13 23:25:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:46,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 23:25:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-13 23:25:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:46,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:46,138 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-13 23:25:46,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:25:46,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329684294] [2022-07-13 23:25:46,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329684294] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:25:46,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430384847] [2022-07-13 23:25:46,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:46,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:46,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:25:46,145 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:25:46,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-13 23:25:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:47,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 4787 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-13 23:25:47,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:25:47,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:25:47,493 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:25:47,520 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2022-07-13 23:25:47,523 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-07-13 23:25:47,538 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 123 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 23:25:47,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:25:47,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430384847] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:25:47,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:25:47,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-13 23:25:47,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233679424] [2022-07-13 23:25:47,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:25:47,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:25:47,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:25:47,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:25:47,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:25:47,541 INFO L87 Difference]: Start difference. First operand 3896 states and 6340 transitions. Second operand has 6 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 23:25:51,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:25:51,210 INFO L93 Difference]: Finished difference Result 7880 states and 12843 transitions. [2022-07-13 23:25:51,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 23:25:51,211 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 260 [2022-07-13 23:25:51,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:25:51,223 INFO L225 Difference]: With dead ends: 7880 [2022-07-13 23:25:51,223 INFO L226 Difference]: Without dead ends: 3992 [2022-07-13 23:25:51,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 298 GetRequests, 286 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:25:51,233 INFO L413 NwaCegarLoop]: 2944 mSDtfsCounter, 1171 mSDsluCounter, 5986 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 8930 SdHoareTripleChecker+Invalid, 1475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-13 23:25:51,233 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 8930 Invalid, 1475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-13 23:25:51,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3992 states. [2022-07-13 23:25:51,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3992 to 3928. [2022-07-13 23:25:51,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3928 states, 2679 states have (on average 1.356849570735349) internal successors, (3635), 2851 states have internal predecessors, (3635), 1143 states have call successors, (1143), 100 states have call predecessors, (1143), 105 states have return successors, (1620), 1150 states have call predecessors, (1620), 1142 states have call successors, (1620) [2022-07-13 23:25:51,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3928 states to 3928 states and 6398 transitions. [2022-07-13 23:25:51,459 INFO L78 Accepts]: Start accepts. Automaton has 3928 states and 6398 transitions. Word has length 260 [2022-07-13 23:25:51,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:25:51,460 INFO L495 AbstractCegarLoop]: Abstraction has 3928 states and 6398 transitions. [2022-07-13 23:25:51,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 30.5) internal successors, (183), 6 states have internal predecessors, (183), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 23:25:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3928 states and 6398 transitions. [2022-07-13 23:25:51,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 269 [2022-07-13 23:25:51,468 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:25:51,469 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:25:51,513 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-13 23:25:51,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:25:51,684 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:25:51,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:25:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash 100388038, now seen corresponding path program 1 times [2022-07-13 23:25:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:25:51,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301589160] [2022-07-13 23:25:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:25:51,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:25:52,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:25:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:25:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:52,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 23:25:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 23:25:52,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:52,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-13 23:25:52,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 23:25:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2022-07-13 23:25:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:52,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-13 23:25:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:52,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-13 23:25:52,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:25:52,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:25:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-13 23:25:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:25:52,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301589160] [2022-07-13 23:25:52,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301589160] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:25:52,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:25:52,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 23:25:52,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902505981] [2022-07-13 23:25:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:25:52,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 23:25:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:25:52,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 23:25:52,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:25:52,600 INFO L87 Difference]: Start difference. First operand 3928 states and 6398 transitions. Second operand has 7 states, 7 states have (on average 26.0) internal successors, (182), 6 states have internal predecessors, (182), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 23:26:00,809 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.15s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:05,597 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:07,628 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:09,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:26:09,550 INFO L93 Difference]: Finished difference Result 7928 states and 12917 transitions. [2022-07-13 23:26:09,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 23:26:09,551 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 6 states have internal predecessors, (182), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 268 [2022-07-13 23:26:09,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:26:09,562 INFO L225 Difference]: With dead ends: 7928 [2022-07-13 23:26:09,562 INFO L226 Difference]: Without dead ends: 4008 [2022-07-13 23:26:09,570 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-13 23:26:09,571 INFO L413 NwaCegarLoop]: 2996 mSDtfsCounter, 272 mSDsluCounter, 11484 mSDsCounter, 0 mSdLazyCounter, 3072 mSolverCounterSat, 597 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 14480 SdHoareTripleChecker+Invalid, 3671 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 597 IncrementalHoareTripleChecker+Valid, 3072 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-07-13 23:26:09,574 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 14480 Invalid, 3671 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [597 Valid, 3072 Invalid, 2 Unknown, 0 Unchecked, 16.8s Time] [2022-07-13 23:26:09,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2022-07-13 23:26:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 3932. [2022-07-13 23:26:09,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 2683 states have (on average 1.3563175549757733) internal successors, (3639), 2855 states have internal predecessors, (3639), 1143 states have call successors, (1143), 100 states have call predecessors, (1143), 105 states have return successors, (1620), 1150 states have call predecessors, (1620), 1142 states have call successors, (1620) [2022-07-13 23:26:09,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 6402 transitions. [2022-07-13 23:26:09,834 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 6402 transitions. Word has length 268 [2022-07-13 23:26:09,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:26:09,835 INFO L495 AbstractCegarLoop]: Abstraction has 3932 states and 6402 transitions. [2022-07-13 23:26:09,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 26.0) internal successors, (182), 6 states have internal predecessors, (182), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 23:26:09,835 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 6402 transitions. [2022-07-13 23:26:09,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-13 23:26:09,843 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:26:09,844 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:26:09,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 23:26:09,844 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:26:09,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:26:09,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1537715532, now seen corresponding path program 1 times [2022-07-13 23:26:09,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:26:09,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63891858] [2022-07-13 23:26:09,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:09,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:26:09,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:26:10,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:26:10,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 23:26:10,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:10,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 23:26:10,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 23:26:10,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 23:26:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 23:26:10,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-13 23:26:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-13 23:26:10,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-13 23:26:10,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:10,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-13 23:26:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:10,315 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 49 proven. 5 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-07-13 23:26:10,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:26:10,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63891858] [2022-07-13 23:26:10,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63891858] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:26:10,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852854205] [2022-07-13 23:26:10,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:10,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:26:10,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:26:10,317 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:26:10,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-13 23:26:11,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:11,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 4857 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-13 23:26:11,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:26:11,870 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 51 proven. 28 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2022-07-13 23:26:11,870 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 23:26:12,047 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-13 23:26:12,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1852854205] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-13 23:26:12,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-13 23:26:12,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 10] total 19 [2022-07-13 23:26:12,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443752730] [2022-07-13 23:26:12,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:26:12,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 23:26:12,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:26:12,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 23:26:12,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-07-13 23:26:12,049 INFO L87 Difference]: Start difference. First operand 3932 states and 6402 transitions. Second operand has 8 states, 8 states have (on average 20.25) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 23:26:12,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:26:12,542 INFO L93 Difference]: Finished difference Result 7926 states and 12920 transitions. [2022-07-13 23:26:12,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:26:12,542 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 272 [2022-07-13 23:26:12,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:26:12,554 INFO L225 Difference]: With dead ends: 7926 [2022-07-13 23:26:12,554 INFO L226 Difference]: Without dead ends: 4002 [2022-07-13 23:26:12,562 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 585 GetRequests, 566 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-07-13 23:26:12,563 INFO L413 NwaCegarLoop]: 3005 mSDtfsCounter, 53 mSDsluCounter, 17733 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 20738 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:26:12,563 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 20738 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-13 23:26:12,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4002 states. [2022-07-13 23:26:12,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4002 to 3938. [2022-07-13 23:26:12,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 2689 states have (on average 1.3555224990702863) internal successors, (3645), 2859 states have internal predecessors, (3645), 1143 states have call successors, (1143), 100 states have call predecessors, (1143), 105 states have return successors, (1620), 1152 states have call predecessors, (1620), 1142 states have call successors, (1620) [2022-07-13 23:26:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 6408 transitions. [2022-07-13 23:26:12,832 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 6408 transitions. Word has length 272 [2022-07-13 23:26:12,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:26:12,833 INFO L495 AbstractCegarLoop]: Abstraction has 3938 states and 6408 transitions. [2022-07-13 23:26:12,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 20.25) internal successors, (162), 6 states have internal predecessors, (162), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 23:26:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 6408 transitions. [2022-07-13 23:26:12,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2022-07-13 23:26:12,841 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:26:12,842 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 6, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:26:12,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-13 23:26:13,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-07-13 23:26:13,064 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:26:13,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:26:13,064 INFO L85 PathProgramCache]: Analyzing trace with hash -1915454451, now seen corresponding path program 2 times [2022-07-13 23:26:13,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:26:13,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719835889] [2022-07-13 23:26:13,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:13,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:26:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:26:13,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:26:13,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 23:26:13,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:13,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 23:26:13,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:13,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 23:26:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-13 23:26:13,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 23:26:13,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-13 23:26:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-13 23:26:13,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:13,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-13 23:26:13,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-13 23:26:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 44 proven. 19 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-13 23:26:13,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:26:13,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719835889] [2022-07-13 23:26:13,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719835889] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:26:13,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261197155] [2022-07-13 23:26:13,456 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 23:26:13,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:26:13,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:26:13,457 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:26:13,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-13 23:26:14,521 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-13 23:26:14,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-13 23:26:14,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 3865 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 23:26:14,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:26:14,584 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 47 [2022-07-13 23:26:14,603 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-13 23:26:14,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:26:14,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261197155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:26:14,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:26:14,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-13 23:26:14,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960455808] [2022-07-13 23:26:14,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:26:14,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-13 23:26:14,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:26:14,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-13 23:26:14,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-13 23:26:14,605 INFO L87 Difference]: Start difference. First operand 3938 states and 6408 transitions. Second operand has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 23:26:20,850 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:21,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:26:21,088 INFO L93 Difference]: Finished difference Result 7888 states and 12854 transitions. [2022-07-13 23:26:21,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 23:26:21,088 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 272 [2022-07-13 23:26:21,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:26:21,100 INFO L225 Difference]: With dead ends: 7888 [2022-07-13 23:26:21,100 INFO L226 Difference]: Without dead ends: 3958 [2022-07-13 23:26:21,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:26:21,110 INFO L413 NwaCegarLoop]: 2925 mSDtfsCounter, 4 mSDsluCounter, 8276 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 11201 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:26:21,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 11201 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 514 Invalid, 1 Unknown, 0 Unchecked, 6.4s Time] [2022-07-13 23:26:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3958 states. [2022-07-13 23:26:21,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3958 to 3938. [2022-07-13 23:26:21,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3938 states, 2689 states have (on average 1.3555224990702863) internal successors, (3645), 2859 states have internal predecessors, (3645), 1143 states have call successors, (1143), 100 states have call predecessors, (1143), 105 states have return successors, (1620), 1152 states have call predecessors, (1620), 1142 states have call successors, (1620) [2022-07-13 23:26:21,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3938 states to 3938 states and 6408 transitions. [2022-07-13 23:26:21,391 INFO L78 Accepts]: Start accepts. Automaton has 3938 states and 6408 transitions. Word has length 272 [2022-07-13 23:26:21,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:26:21,391 INFO L495 AbstractCegarLoop]: Abstraction has 3938 states and 6408 transitions. [2022-07-13 23:26:21,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.6) internal successors, (153), 5 states have internal predecessors, (153), 2 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-13 23:26:21,391 INFO L276 IsEmpty]: Start isEmpty. Operand 3938 states and 6408 transitions. [2022-07-13 23:26:21,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2022-07-13 23:26:21,400 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:26:21,401 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 9, 8, 8, 8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:26:21,426 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-13 23:26:21,626 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-13 23:26:21,626 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:26:21,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:26:21,627 INFO L85 PathProgramCache]: Analyzing trace with hash 644618884, now seen corresponding path program 1 times [2022-07-13 23:26:21,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:26:21,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822415995] [2022-07-13 23:26:21,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:21,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:26:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:26:21,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:26:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:26:21,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:21,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:26:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 23:26:21,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 23:26:21,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 23:26:21,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:21,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-13 23:26:21,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-13 23:26:21,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-13 23:26:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-13 23:26:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:21,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:21,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:22,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-13 23:26:22,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:22,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:22,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2022-07-13 23:26:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:22,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2022-07-13 23:26:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:22,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:22,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 254 [2022-07-13 23:26:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:22,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:22,058 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-07-13 23:26:22,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:26:22,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822415995] [2022-07-13 23:26:22,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822415995] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:26:22,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88549300] [2022-07-13 23:26:22,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:22,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:26:22,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:26:22,060 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:26:22,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-13 23:26:23,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:23,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 5059 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 23:26:23,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:26:23,379 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 251 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-13 23:26:23,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:26:23,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88549300] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:26:23,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:26:23,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-13 23:26:23,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466899026] [2022-07-13 23:26:23,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:26:23,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:26:23,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:26:23,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:26:23,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 23:26:23,380 INFO L87 Difference]: Start difference. First operand 3938 states and 6408 transitions. Second operand has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 23:26:24,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:26:24,047 INFO L93 Difference]: Finished difference Result 7930 states and 12921 transitions. [2022-07-13 23:26:24,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:26:24,047 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 292 [2022-07-13 23:26:24,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:26:24,059 INFO L225 Difference]: With dead ends: 7930 [2022-07-13 23:26:24,059 INFO L226 Difference]: Without dead ends: 4000 [2022-07-13 23:26:24,067 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 23:26:24,068 INFO L413 NwaCegarLoop]: 2930 mSDtfsCounter, 1139 mSDsluCounter, 3929 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1517 SdHoareTripleChecker+Valid, 6859 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-13 23:26:24,068 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1517 Valid, 6859 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-13 23:26:24,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4000 states. [2022-07-13 23:26:24,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4000 to 3940. [2022-07-13 23:26:24,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3940 states, 2691 states have (on average 1.3552582683017467) internal successors, (3647), 2861 states have internal predecessors, (3647), 1143 states have call successors, (1143), 100 states have call predecessors, (1143), 105 states have return successors, (1620), 1152 states have call predecessors, (1620), 1142 states have call successors, (1620) [2022-07-13 23:26:24,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3940 states to 3940 states and 6410 transitions. [2022-07-13 23:26:24,293 INFO L78 Accepts]: Start accepts. Automaton has 3940 states and 6410 transitions. Word has length 292 [2022-07-13 23:26:24,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:26:24,294 INFO L495 AbstractCegarLoop]: Abstraction has 3940 states and 6410 transitions. [2022-07-13 23:26:24,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 42.5) internal successors, (170), 4 states have internal predecessors, (170), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 23:26:24,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3940 states and 6410 transitions. [2022-07-13 23:26:24,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-13 23:26:24,302 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:26:24,302 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:26:24,331 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-13 23:26:24,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-13 23:26:24,524 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:26:24,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:26:24,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1279441468, now seen corresponding path program 1 times [2022-07-13 23:26:24,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:26:24,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219717476] [2022-07-13 23:26:24,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:24,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:26:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:26:24,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:26:24,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:24,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 23:26:24,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 23:26:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:24,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 23:26:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 23:26:24,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 23:26:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-13 23:26:24,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:24,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-13 23:26:24,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:24,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-13 23:26:24,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:24,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:24,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 23:26:24,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:25,002 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 57 proven. 14 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2022-07-13 23:26:25,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:26:25,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219717476] [2022-07-13 23:26:25,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219717476] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:26:25,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782503443] [2022-07-13 23:26:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:25,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:26:25,003 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:26:25,032 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:26:25,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-13 23:26:27,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:27,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 4875 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-13 23:26:27,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:26:27,535 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 130 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2022-07-13 23:26:27,536 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:26:27,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782503443] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:26:27,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:26:27,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 13 [2022-07-13 23:26:27,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845008824] [2022-07-13 23:26:27,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:26:27,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 23:26:27,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:26:27,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 23:26:27,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-13 23:26:27,538 INFO L87 Difference]: Start difference. First operand 3940 states and 6410 transitions. Second operand has 9 states, 9 states have (on average 21.666666666666668) internal successors, (195), 7 states have internal predecessors, (195), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-13 23:26:28,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:26:28,959 INFO L93 Difference]: Finished difference Result 7946 states and 12935 transitions. [2022-07-13 23:26:28,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:26:28,959 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 21.666666666666668) internal successors, (195), 7 states have internal predecessors, (195), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 280 [2022-07-13 23:26:28,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:26:28,970 INFO L225 Difference]: With dead ends: 7946 [2022-07-13 23:26:28,970 INFO L226 Difference]: Without dead ends: 4014 [2022-07-13 23:26:28,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 310 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:26:28,978 INFO L413 NwaCegarLoop]: 3004 mSDtfsCounter, 1140 mSDsluCounter, 16419 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1661 SdHoareTripleChecker+Valid, 19423 SdHoareTripleChecker+Invalid, 1655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:26:28,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1661 Valid, 19423 Invalid, 1655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-13 23:26:28,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4014 states. [2022-07-13 23:26:29,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4014 to 3946. [2022-07-13 23:26:29,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 2697 states have (on average 1.3544679273266593) internal successors, (3653), 2865 states have internal predecessors, (3653), 1143 states have call successors, (1143), 100 states have call predecessors, (1143), 105 states have return successors, (1620), 1154 states have call predecessors, (1620), 1142 states have call successors, (1620) [2022-07-13 23:26:29,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6416 transitions. [2022-07-13 23:26:29,270 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6416 transitions. Word has length 280 [2022-07-13 23:26:29,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:26:29,271 INFO L495 AbstractCegarLoop]: Abstraction has 3946 states and 6416 transitions. [2022-07-13 23:26:29,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 21.666666666666668) internal successors, (195), 7 states have internal predecessors, (195), 3 states have call successors, (22), 2 states have call predecessors, (22), 4 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-13 23:26:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6416 transitions. [2022-07-13 23:26:29,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-13 23:26:29,280 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:26:29,280 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:26:29,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-13 23:26:29,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-13 23:26:29,504 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:26:29,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:26:29,504 INFO L85 PathProgramCache]: Analyzing trace with hash 1381787516, now seen corresponding path program 2 times [2022-07-13 23:26:29,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:26:29,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165342991] [2022-07-13 23:26:29,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:29,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:26:29,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:29,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:26:29,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:26:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:30,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 23:26:30,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:30,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 23:26:30,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:30,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 23:26:30,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 23:26:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 23:26:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-13 23:26:30,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-13 23:26:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-13 23:26:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:30,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 23:26:30,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:30,127 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2022-07-13 23:26:30,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:26:30,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165342991] [2022-07-13 23:26:30,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165342991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:26:30,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:26:30,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 23:26:30,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605505535] [2022-07-13 23:26:30,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:26:30,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:26:30,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:26:30,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:26:30,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-13 23:26:30,130 INFO L87 Difference]: Start difference. First operand 3946 states and 6416 transitions. Second operand has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 23:26:35,075 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:38,306 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.44s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:42,865 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:43,943 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:45,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:26:45,692 INFO L93 Difference]: Finished difference Result 7964 states and 12951 transitions. [2022-07-13 23:26:45,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 23:26:45,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 280 [2022-07-13 23:26:45,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:26:45,704 INFO L225 Difference]: With dead ends: 7964 [2022-07-13 23:26:45,704 INFO L226 Difference]: Without dead ends: 4026 [2022-07-13 23:26:45,714 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:26:45,715 INFO L413 NwaCegarLoop]: 2915 mSDtfsCounter, 264 mSDsluCounter, 8618 mSDsCounter, 0 mSdLazyCounter, 2562 mSolverCounterSat, 590 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 11533 SdHoareTripleChecker+Invalid, 3153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 590 IncrementalHoareTripleChecker+Valid, 2562 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.4s IncrementalHoareTripleChecker+Time [2022-07-13 23:26:45,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 11533 Invalid, 3153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [590 Valid, 2562 Invalid, 1 Unknown, 0 Unchecked, 15.4s Time] [2022-07-13 23:26:45,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2022-07-13 23:26:45,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 3946. [2022-07-13 23:26:45,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3946 states, 2697 states have (on average 1.3544679273266593) internal successors, (3653), 2865 states have internal predecessors, (3653), 1143 states have call successors, (1143), 100 states have call predecessors, (1143), 105 states have return successors, (1620), 1154 states have call predecessors, (1620), 1142 states have call successors, (1620) [2022-07-13 23:26:45,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3946 states to 3946 states and 6416 transitions. [2022-07-13 23:26:45,986 INFO L78 Accepts]: Start accepts. Automaton has 3946 states and 6416 transitions. Word has length 280 [2022-07-13 23:26:45,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:26:45,986 INFO L495 AbstractCegarLoop]: Abstraction has 3946 states and 6416 transitions. [2022-07-13 23:26:45,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 31.333333333333332) internal successors, (188), 5 states have internal predecessors, (188), 2 states have call successors, (21), 3 states have call predecessors, (21), 1 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-13 23:26:45,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3946 states and 6416 transitions. [2022-07-13 23:26:45,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-13 23:26:45,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:26:45,996 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:26:45,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 23:26:45,996 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:26:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:26:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1935295812, now seen corresponding path program 1 times [2022-07-13 23:26:45,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:26:45,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433321586] [2022-07-13 23:26:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:46,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:26:46,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:26:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:26:46,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:46,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 23:26:46,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-13 23:26:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-13 23:26:46,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-13 23:26:46,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-13 23:26:46,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:46,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-13 23:26:46,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:46,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 239 [2022-07-13 23:26:46,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:46,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:46,518 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-07-13 23:26:46,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:26:46,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433321586] [2022-07-13 23:26:46,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433321586] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:26:46,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952510865] [2022-07-13 23:26:46,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:46,519 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:26:46,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:26:46,521 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:26:46,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-13 23:26:47,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:47,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 4815 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 23:26:47,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:26:47,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:26:47,875 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:26:47,913 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2022-07-13 23:26:47,916 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-07-13 23:26:47,932 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 23:26:47,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:26:47,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1952510865] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:26:47,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:26:47,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-13 23:26:47,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619633620] [2022-07-13 23:26:47,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:26:47,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:26:47,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:26:47,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:26:47,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:26:47,934 INFO L87 Difference]: Start difference. First operand 3946 states and 6416 transitions. Second operand has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 23:26:50,391 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:51,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:26:51,373 INFO L93 Difference]: Finished difference Result 7980 states and 12995 transitions. [2022-07-13 23:26:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 23:26:51,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 278 [2022-07-13 23:26:51,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:26:51,385 INFO L225 Difference]: With dead ends: 7980 [2022-07-13 23:26:51,385 INFO L226 Difference]: Without dead ends: 4042 [2022-07-13 23:26:51,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:26:51,393 INFO L413 NwaCegarLoop]: 2938 mSDtfsCounter, 1172 mSDsluCounter, 4703 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1552 SdHoareTripleChecker+Valid, 7641 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 23:26:51,394 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1552 Valid, 7641 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1329 Invalid, 1 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 23:26:51,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4042 states. [2022-07-13 23:26:51,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4042 to 3978. [2022-07-13 23:26:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3978 states, 2719 states have (on average 1.3552776756160354) internal successors, (3685), 2889 states have internal predecessors, (3685), 1153 states have call successors, (1153), 100 states have call predecessors, (1153), 105 states have return successors, (1636), 1164 states have call predecessors, (1636), 1152 states have call successors, (1636) [2022-07-13 23:26:51,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3978 states to 3978 states and 6474 transitions. [2022-07-13 23:26:51,610 INFO L78 Accepts]: Start accepts. Automaton has 3978 states and 6474 transitions. Word has length 278 [2022-07-13 23:26:51,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:26:51,611 INFO L495 AbstractCegarLoop]: Abstraction has 3978 states and 6474 transitions. [2022-07-13 23:26:51,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 33.5) internal successors, (201), 6 states have internal predecessors, (201), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 23:26:51,611 INFO L276 IsEmpty]: Start isEmpty. Operand 3978 states and 6474 transitions. [2022-07-13 23:26:51,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-07-13 23:26:51,619 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:26:51,619 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:26:51,646 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-13 23:26:51,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:26:51,821 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:26:51,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:26:51,821 INFO L85 PathProgramCache]: Analyzing trace with hash 645266540, now seen corresponding path program 1 times [2022-07-13 23:26:51,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:26:51,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [317766275] [2022-07-13 23:26:51,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:26:51,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:26:52,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:26:52,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:26:52,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:52,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 23:26:52,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 23:26:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-13 23:26:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-13 23:26:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-13 23:26:52,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-13 23:26:52,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:52,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 241 [2022-07-13 23:26:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:26:52,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:26:52,431 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-13 23:26:52,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:26:52,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [317766275] [2022-07-13 23:26:52,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [317766275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:26:52,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 23:26:52,432 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 23:26:52,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889623769] [2022-07-13 23:26:52,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:26:52,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 23:26:52,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:26:52,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 23:26:52,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-13 23:26:52,433 INFO L87 Difference]: Start difference. First operand 3978 states and 6474 transitions. Second operand has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 6 states have internal predecessors, (194), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 23:26:55,801 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:26:56,994 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.19s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:27:02,195 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.25s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:27:04,018 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.82s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:27:06,011 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.16s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:27:09,927 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:27:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:12,144 INFO L93 Difference]: Finished difference Result 8028 states and 13069 transitions. [2022-07-13 23:27:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 23:27:12,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 6 states have internal predecessors, (194), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 280 [2022-07-13 23:27:12,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:12,155 INFO L225 Difference]: With dead ends: 8028 [2022-07-13 23:27:12,155 INFO L226 Difference]: Without dead ends: 4058 [2022-07-13 23:27:12,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-07-13 23:27:12,266 INFO L413 NwaCegarLoop]: 2882 mSDtfsCounter, 272 mSDsluCounter, 10896 mSDsCounter, 0 mSdLazyCounter, 3079 mSolverCounterSat, 596 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 325 SdHoareTripleChecker+Valid, 13778 SdHoareTripleChecker+Invalid, 3676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 596 IncrementalHoareTripleChecker+Valid, 3079 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-07-13 23:27:12,266 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [325 Valid, 13778 Invalid, 3676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [596 Valid, 3079 Invalid, 1 Unknown, 0 Unchecked, 19.5s Time] [2022-07-13 23:27:12,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4058 states. [2022-07-13 23:27:12,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4058 to 3982. [2022-07-13 23:27:12,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3982 states, 2723 states have (on average 1.3547557840616966) internal successors, (3689), 2893 states have internal predecessors, (3689), 1153 states have call successors, (1153), 100 states have call predecessors, (1153), 105 states have return successors, (1636), 1164 states have call predecessors, (1636), 1152 states have call successors, (1636) [2022-07-13 23:27:12,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3982 states to 3982 states and 6478 transitions. [2022-07-13 23:27:12,479 INFO L78 Accepts]: Start accepts. Automaton has 3982 states and 6478 transitions. Word has length 280 [2022-07-13 23:27:12,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:12,480 INFO L495 AbstractCegarLoop]: Abstraction has 3982 states and 6478 transitions. [2022-07-13 23:27:12,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 27.714285714285715) internal successors, (194), 6 states have internal predecessors, (194), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-13 23:27:12,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3982 states and 6478 transitions. [2022-07-13 23:27:12,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-13 23:27:12,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:12,495 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:27:12,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 23:27:12,496 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:12,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -808767452, now seen corresponding path program 1 times [2022-07-13 23:27:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:27:12,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624022954] [2022-07-13 23:27:12,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:12,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:27:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:27:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:27:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:12,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 23:27:12,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:12,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 23:27:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:12,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-13 23:27:12,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-13 23:27:12,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-13 23:27:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:12,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-13 23:27:12,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 243 [2022-07-13 23:27:12,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:12,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:12,903 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-07-13 23:27:12,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:27:12,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624022954] [2022-07-13 23:27:12,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624022954] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:27:12,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001546777] [2022-07-13 23:27:12,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:12,904 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:27:12,904 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:27:12,905 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:27:12,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-13 23:27:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:14,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 4823 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-13 23:27:14,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:14,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:27:14,250 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:27:14,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2022-07-13 23:27:14,279 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-07-13 23:27:14,294 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 23:27:14,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:27:14,295 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001546777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:27:14,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:27:14,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-13 23:27:14,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418598423] [2022-07-13 23:27:14,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:27:14,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:27:14,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:27:14,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:27:14,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:27:14,296 INFO L87 Difference]: Start difference. First operand 3982 states and 6478 transitions. Second operand has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 23:27:16,666 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:27:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:17,540 INFO L93 Difference]: Finished difference Result 8052 states and 13119 transitions. [2022-07-13 23:27:17,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 23:27:17,540 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 282 [2022-07-13 23:27:17,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:17,551 INFO L225 Difference]: With dead ends: 8052 [2022-07-13 23:27:17,551 INFO L226 Difference]: Without dead ends: 4078 [2022-07-13 23:27:17,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 308 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:27:17,560 INFO L413 NwaCegarLoop]: 2937 mSDtfsCounter, 1171 mSDsluCounter, 4702 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 28 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1551 SdHoareTripleChecker+Valid, 7639 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 23:27:17,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1551 Valid, 7639 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1329 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 23:27:17,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4078 states. [2022-07-13 23:27:17,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4078 to 4014. [2022-07-13 23:27:17,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4014 states, 2745 states have (on average 1.3555555555555556) internal successors, (3721), 2917 states have internal predecessors, (3721), 1163 states have call successors, (1163), 100 states have call predecessors, (1163), 105 states have return successors, (1652), 1174 states have call predecessors, (1652), 1162 states have call successors, (1652) [2022-07-13 23:27:17,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4014 states to 4014 states and 6536 transitions. [2022-07-13 23:27:17,787 INFO L78 Accepts]: Start accepts. Automaton has 4014 states and 6536 transitions. Word has length 282 [2022-07-13 23:27:17,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:17,787 INFO L495 AbstractCegarLoop]: Abstraction has 4014 states and 6536 transitions. [2022-07-13 23:27:17,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.166666666666664) internal successors, (205), 6 states have internal predecessors, (205), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 23:27:17,787 INFO L276 IsEmpty]: Start isEmpty. Operand 4014 states and 6536 transitions. [2022-07-13 23:27:17,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2022-07-13 23:27:17,795 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:17,795 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 8, 8, 8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:27:17,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:18,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:27:18,024 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:18,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:18,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1038160699, now seen corresponding path program 1 times [2022-07-13 23:27:18,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:27:18,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2054049388] [2022-07-13 23:27:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:18,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:27:18,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:27:18,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:27:18,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 23:27:18,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 23:27:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 23:27:18,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-13 23:27:18,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-13 23:27:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-13 23:27:18,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2022-07-13 23:27:18,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 203 [2022-07-13 23:27:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-13 23:27:18,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-13 23:27:18,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 23:27:18,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 256 [2022-07-13 23:27:18,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 268 [2022-07-13 23:27:18,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 35 proven. 39 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-07-13 23:27:18,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:27:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2054049388] [2022-07-13 23:27:18,505 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2054049388] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:27:18,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794025243] [2022-07-13 23:27:18,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:18,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:27:18,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:27:18,508 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:27:18,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-13 23:27:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:19,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 5066 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-13 23:27:19,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:19,967 INFO L134 CoverageAnalysis]: Checked inductivity of 440 backedges. 258 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-13 23:27:19,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:27:19,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794025243] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:27:19,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:27:19,968 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-07-13 23:27:19,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610915078] [2022-07-13 23:27:19,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:27:19,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 23:27:19,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:27:19,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 23:27:19,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 23:27:19,969 INFO L87 Difference]: Start difference. First operand 4014 states and 6536 transitions. Second operand has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 23:27:20,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:20,828 INFO L93 Difference]: Finished difference Result 8082 states and 13177 transitions. [2022-07-13 23:27:20,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 23:27:20,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 306 [2022-07-13 23:27:20,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:20,845 INFO L225 Difference]: With dead ends: 8082 [2022-07-13 23:27:20,845 INFO L226 Difference]: Without dead ends: 4076 [2022-07-13 23:27:20,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 354 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 23:27:20,856 INFO L413 NwaCegarLoop]: 2930 mSDtfsCounter, 1132 mSDsluCounter, 3929 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 6859 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-13 23:27:20,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 6859 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-13 23:27:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4076 states. [2022-07-13 23:27:21,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4076 to 4016. [2022-07-13 23:27:21,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4016 states, 2747 states have (on average 1.3552966872952312) internal successors, (3723), 2919 states have internal predecessors, (3723), 1163 states have call successors, (1163), 100 states have call predecessors, (1163), 105 states have return successors, (1652), 1174 states have call predecessors, (1652), 1162 states have call successors, (1652) [2022-07-13 23:27:21,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4016 states to 4016 states and 6538 transitions. [2022-07-13 23:27:21,096 INFO L78 Accepts]: Start accepts. Automaton has 4016 states and 6538 transitions. Word has length 306 [2022-07-13 23:27:21,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:21,096 INFO L495 AbstractCegarLoop]: Abstraction has 4016 states and 6538 transitions. [2022-07-13 23:27:21,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 45.75) internal successors, (183), 4 states have internal predecessors, (183), 4 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-07-13 23:27:21,096 INFO L276 IsEmpty]: Start isEmpty. Operand 4016 states and 6538 transitions. [2022-07-13 23:27:21,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2022-07-13 23:27:21,106 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:21,106 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:27:21,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:21,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:27:21,320 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:21,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:21,320 INFO L85 PathProgramCache]: Analyzing trace with hash 199102020, now seen corresponding path program 1 times [2022-07-13 23:27:21,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:27:21,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420329030] [2022-07-13 23:27:21,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:21,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:27:21,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:27:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:27:21,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 23:27:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:21,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-13 23:27:21,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:21,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-13 23:27:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-13 23:27:21,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-13 23:27:21,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:21,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2022-07-13 23:27:21,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:21,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2022-07-13 23:27:21,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:21,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:21,787 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 46 proven. 5 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2022-07-13 23:27:21,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:27:21,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420329030] [2022-07-13 23:27:21,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420329030] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:27:21,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [904002355] [2022-07-13 23:27:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:21,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:27:21,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:27:21,790 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:27:21,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-13 23:27:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:23,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 4831 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-13 23:27:23,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:23,203 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:27:23,207 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-13 23:27:23,235 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 37 [2022-07-13 23:27:23,238 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 21 [2022-07-13 23:27:23,254 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-13 23:27:23,254 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:27:23,254 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [904002355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:27:23,254 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:27:23,254 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-13 23:27:23,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407623167] [2022-07-13 23:27:23,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:27:23,255 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 23:27:23,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:27:23,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 23:27:23,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:27:23,255 INFO L87 Difference]: Start difference. First operand 4016 states and 6538 transitions. Second operand has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 23:27:25,694 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-13 23:27:27,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:27,106 INFO L93 Difference]: Finished difference Result 8120 states and 13239 transitions. [2022-07-13 23:27:27,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 23:27:27,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 286 [2022-07-13 23:27:27,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:27,120 INFO L225 Difference]: With dead ends: 8120 [2022-07-13 23:27:27,121 INFO L226 Difference]: Without dead ends: 4112 [2022-07-13 23:27:27,131 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 312 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-13 23:27:27,132 INFO L413 NwaCegarLoop]: 2943 mSDtfsCounter, 1152 mSDsluCounter, 7480 mSDsCounter, 0 mSdLazyCounter, 1358 mSolverCounterSat, 20 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1532 SdHoareTripleChecker+Valid, 10423 SdHoareTripleChecker+Invalid, 1379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 1358 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 23:27:27,132 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1532 Valid, 10423 Invalid, 1379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 1358 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-07-13 23:27:27,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4112 states. [2022-07-13 23:27:27,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4112 to 4048. [2022-07-13 23:27:27,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4048 states, 2769 states have (on average 1.356085229324666) internal successors, (3755), 2943 states have internal predecessors, (3755), 1173 states have call successors, (1173), 100 states have call predecessors, (1173), 105 states have return successors, (1668), 1184 states have call predecessors, (1668), 1172 states have call successors, (1668) [2022-07-13 23:27:27,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4048 states to 4048 states and 6596 transitions. [2022-07-13 23:27:27,387 INFO L78 Accepts]: Start accepts. Automaton has 4048 states and 6596 transitions. Word has length 286 [2022-07-13 23:27:27,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:27,388 INFO L495 AbstractCegarLoop]: Abstraction has 4048 states and 6596 transitions. [2022-07-13 23:27:27,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.833333333333336) internal successors, (209), 6 states have internal predecessors, (209), 4 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-13 23:27:27,388 INFO L276 IsEmpty]: Start isEmpty. Operand 4048 states and 6596 transitions. [2022-07-13 23:27:27,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-13 23:27:27,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:27,398 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 8, 8, 8, 8, 8, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:27:27,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:27,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:27:27,612 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:27,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:27,612 INFO L85 PathProgramCache]: Analyzing trace with hash 372479888, now seen corresponding path program 1 times [2022-07-13 23:27:27,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:27:27,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509262390] [2022-07-13 23:27:27,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:27,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:27:27,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:27:27,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:27:27,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:27,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:27:27,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:27,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:27:27,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:27,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 23:27:27,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 23:27:27,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 23:27:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:27,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 23:27:27,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-13 23:27:27,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:27,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-13 23:27:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-13 23:27:28,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-13 23:27:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-13 23:27:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:28,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-13 23:27:28,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 23:27:28,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:28,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-13 23:27:28,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-13 23:27:28,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:28,074 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-07-13 23:27:28,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:27:28,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509262390] [2022-07-13 23:27:28,074 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509262390] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:27:28,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642387991] [2022-07-13 23:27:28,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:28,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:27:28,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:27:28,076 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:27:28,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-13 23:27:29,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:29,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 5099 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-13 23:27:29,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 23:27:29,813 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-13 23:27:29,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 23:27:29,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642387991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 23:27:29,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 23:27:29,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8] total 12 [2022-07-13 23:27:29,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202118589] [2022-07-13 23:27:29,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 23:27:29,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 23:27:29,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 23:27:29,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 23:27:29,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-13 23:27:29,816 INFO L87 Difference]: Start difference. First operand 4048 states and 6596 transitions. Second operand has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 7 states have internal predecessors, (177), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 23:27:31,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 23:27:31,203 INFO L93 Difference]: Finished difference Result 8160 states and 13307 transitions. [2022-07-13 23:27:31,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 23:27:31,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 7 states have internal predecessors, (177), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) Word has length 304 [2022-07-13 23:27:31,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 23:27:31,216 INFO L225 Difference]: With dead ends: 8160 [2022-07-13 23:27:31,216 INFO L226 Difference]: Without dead ends: 4120 [2022-07-13 23:27:31,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-07-13 23:27:31,226 INFO L413 NwaCegarLoop]: 2954 mSDtfsCounter, 1143 mSDsluCounter, 13491 mSDsCounter, 0 mSdLazyCounter, 1475 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1708 SdHoareTripleChecker+Valid, 16445 SdHoareTripleChecker+Invalid, 1479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 1475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-13 23:27:31,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1708 Valid, 16445 Invalid, 1479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 1475 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-13 23:27:31,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4120 states. [2022-07-13 23:27:31,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4120 to 4054. [2022-07-13 23:27:31,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4054 states, 2775 states have (on average 1.3553153153153152) internal successors, (3761), 2947 states have internal predecessors, (3761), 1173 states have call successors, (1173), 100 states have call predecessors, (1173), 105 states have return successors, (1668), 1186 states have call predecessors, (1668), 1172 states have call successors, (1668) [2022-07-13 23:27:31,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4054 states to 4054 states and 6602 transitions. [2022-07-13 23:27:31,497 INFO L78 Accepts]: Start accepts. Automaton has 4054 states and 6602 transitions. Word has length 304 [2022-07-13 23:27:31,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 23:27:31,497 INFO L495 AbstractCegarLoop]: Abstraction has 4054 states and 6602 transitions. [2022-07-13 23:27:31,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.666666666666668) internal successors, (177), 7 states have internal predecessors, (177), 3 states have call successors, (28), 2 states have call predecessors, (28), 4 states have return successors, (21), 5 states have call predecessors, (21), 3 states have call successors, (21) [2022-07-13 23:27:31,497 INFO L276 IsEmpty]: Start isEmpty. Operand 4054 states and 6602 transitions. [2022-07-13 23:27:31,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2022-07-13 23:27:31,505 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 23:27:31,505 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 8, 8, 8, 8, 8, 6, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 23:27:31,537 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-13 23:27:31,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:27:31,708 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 23:27:31,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 23:27:31,708 INFO L85 PathProgramCache]: Analyzing trace with hash 1159993102, now seen corresponding path program 2 times [2022-07-13 23:27:31,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 23:27:31,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640299544] [2022-07-13 23:27:31,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 23:27:31,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 23:27:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:31,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-13 23:27:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:31,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 23:27:31,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:31,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 23:27:31,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:31,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:31,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 23:27:31,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:32,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 23:27:32,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 23:27:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:32,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 23:27:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:32,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-13 23:27:32,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-13 23:27:32,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-13 23:27:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2022-07-13 23:27:32,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:32,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-13 23:27:32,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2022-07-13 23:27:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 240 [2022-07-13 23:27:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 248 [2022-07-13 23:27:32,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:32,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 260 [2022-07-13 23:27:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 23:27:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 273 [2022-07-13 23:27:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 23:27:32,177 INFO L134 CoverageAnalysis]: Checked inductivity of 439 backedges. 28 proven. 39 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-07-13 23:27:32,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 23:27:32,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640299544] [2022-07-13 23:27:32,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640299544] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 23:27:32,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [111811796] [2022-07-13 23:27:32,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 23:27:32,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 23:27:32,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 23:27:32,179 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 23:27:32,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process